3VDC STEREO HEADPHONE AMPLIFIER By IC LM4910

3VDC Stereo Headphone Amplifier by IC LM4910

This is a stereo headphone amplifier circuit of using LM4910 IC. This circuit is very simple so it is very easy to make even for beginners once. because the voltage source is used only 3 VDC you can use 2 x A3 battery in series stacking.

 

Circuit diagram of 3VDC Stereo Headphone 

Amplifier by LM4910 

IC LM4910 Pinout

LM4910 Boomer belonging to the series of National Semiconductors is an integrated stereo amplifier is primarily intended for Headphone stereo applications. The IC can be operated from 3.3V ans its 0.35mW can deliver output power into a 32 ohm load. The LM4910 has very low distortion (less than 1%) and the shutdown current is less than 1uA. This low shutdown current makes it Suitable for battery operated applications.

C1 and C2 are the input DC decoupling capacitors for the left and right input channels. R1 and R2 are the respective input resistors. R3 is the feed back resistor for left channel while R4 is the feed back resistor for the right channel. C3 is the power supply filter capacitor. The feedback resistors also sets the closed loop gain in conjunction with the corresponding input resistors.

BA5417 STREREO POWER AMPLIFIER CIRCUIT

BA5417 Stereo Power Amplifier Circuit

BA5417 stereo amplifier circuit has of good features like thermal shut down, standby function, soft clipping, wide operating voltage range etc. The circuit can be deliver 5W × 2 when VCC = 12V and RL = 4Ω, or 2.8W x 2 when VCC = 9V RL = 3Ω.This and amplifier circuit has excellent sound quality, and low THD (total harmonic distortion) around 0.1% at F = 1kHz; Pout = 0.5W

BA5417 Stereo Power Amplifier Circuit

C-in are DC decoupling capacitors which block any DC level present in the input signals. C3 and C5 couples the Amplifiers left and right power outputs to the corresponding loud speakers. C2 and C6 are bootstrap capacitors. Bootstrapping is a method in which a portion of the amplifiers is taken and applied to the input. The prime objective of bootstrapping is to improve the input impedance. Networks R1,C1 and R2,C7 are meant for improving the high frequency stability of the circuit. C4 is the power supply filter capacitor. S1 is the standby switch. C8 is a filter capacitor. RF1 and RF2 sets the gain of the left and right channels of the amplifier in conjunction with the 39K internal feedback resistors.

Skema 200 watt Power Amplifier STK4050 II

type='html'>Features STK4050 II

• Compact package for thin-type audio sets
• Member of pin-compatible series with outputs of 20 to
• 200W
• Easy heatsink design to disperse heat generated in thintype
• stereo sets
• Constant-current circuit to reduce supply switch-on and
• switch-off shock noise
• External supply switch-on and switch-off shock noise
• muting, load short-circuit protection, thermal shutdown
• and other circuits can be tailored-designed

Application Circuit Power Amplifier STK4050 II

Skema Specified Transformer Supply for 200 watt Power Amplifier STK4050 II

Note:

• To use the results of the max capacitor 10000Uf/80 Vot, with a pure tranformator 5 / 42 volt
• provide a good cooling plate, the ic STK4050 II

Tips that sub Woofer Voice | bass sound more felt

according to experience, you have to do a little experiment for you to get the best bass sound, stalwart, gigantic. To get the best bass sound between the subwoofer and the room you, then you should get a 'pass that point. the following manner:

• Place the subwoofer on your location on our seat. (sub Woofer do not be put on the table / cupboard you high more than 1 / 2 meter)
• Turn the sub Woofer and you do not forget to disconnect the speaker Amplifier.
• Play a song you like, which have gained a good frequency bass
• Then try running memutari room, see the characters that appear bass.
• You will hear some of the bass sound quality improvements in some corner of the room. This happens due to the interaction between low-frequency space and you. Nah corners you can select as a "node" or the point pas you need to immediately place your subwoofer in a corner of it.

Skema LM3886 68 Watt Audio Power Amplifier

type='html'>Skema Rangkaian LM3886 68 Watt Audio Power Amplifier

The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.

The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.

Gambar Skema LM3886 68 Watt Audio Power Amplifier

Notice:

• 68W cont. avg. output power into 4 at VCC = ±28V
• 38W cont. avg. output power into 8 at VCC = ±28V
• 50W cont. avg. output power into 8 at VCC = ±35V
• 135W instantaneous peak output power capability
• Signal-to-Noise Ratio >= 92dB
• An input mute function
• Output protection from a short to ground or to the supplies via internal current limiting circuitry
• Output over-voltage protection against transients from inductive loads
• Supply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients
• 11-lead TO-220 package
• Wide supply range 20V - 94V

Skema 2N3055 Power Amplifier

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Amplifier power is a series of electronics that is used to strengthen the power (or energy in general). In the field of audio, amplifier will amplify the sound signal (which has been expressed in the form of electric current) on the input it into electric current is stronger at the output. The amount of strengthening is often known by the term gain. Value of the gain is expressed as a function of frequency is called the transfer function.

So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).

2N3055 Power Amplifier

Skema 2N3055 Power Amplifier. The optimal supply voltage is around 30V, but this amp work from 24 to 32V. The maximal input voltage is around 0.8 - 1V. As you can see, in this design the components have a big tolerance, so you can build it almost of the components, which you find at home. The and transistors can be any NPN type power transistor, but do not use Darlington types. The output power is around 150 Watt.

Amplifier schematic:

Skema Rangkaian 2N3055 Power Amplifier

capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequncies are getting louder.

capacitor C2 regulates the higher frequencies (treble), as the capacitance grows, the higher frequencies are getting quiter.

this is a class B amplifier, this means, that a current must flow through the end transistors, even if there is no signal on the input. This current can be regulated with the 500Ω trimmer resistor. As this current incrases, the sound of the amplifier gets better, but the end transistors are more heating. But if this current decrases, the transistors are not heating so much, but the sound gets worse.

Rangkaian TDA 2616 Hi-fi Power Amplifier

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This circuit is a 2X12 watt Hi-Fi Power amplifier circuit using IC TDA 2616 from Phillips. This circuit very Simple and robust circuit using very less components makes the circuit ideal for a portable power amplifier. The circuit delivers 12 W power on 8 Ohm speaker for each channel at +/- 12 V dual supply.

Skema Rangkaian TDA 2616 Hi-fi Power Amplifier

Note:

• Capacitors except C10 & C9 are ceramic.
• Capacitors Electrolic must be rated 50V.
• Use a well regulated and filtered +/- 12 V dual power supply that is able to provide at least 2 A continuous current.

IC TDA2616 is a stereo power amplifier IC comes in a 9-lead single-in-line (SIL9) plastic power package (SOT131). This IC is specially designed for mains fed amplifier circuits, such as stereo radio,tape and television .The IC has good gain balance of both channels and Hi-fi in accordance with IEC 268 and DIN 45500 standards.

IC TDA 2616 DESCRIPTION

The TDA2616 is a hi-fi stereo amplifier designed for mains fed applications, such as stereo radio and TV. The circuit is optimally designed for symmetrical power supplies, but is also well-suited to asymmetrical power supply systems. An output power of 2 ´ 12 W (THD = 0.5%) can be
delivered into an 8 Wload with a symmetrical power supply of ±16 V. The gain is internally fixed at 30 dB, thus offering a low gain spread and a very good gain balance between the two amplifiers (0.2 dB). A special feature is the input mute circuit. This circuit disconnects the non-inverting inputs when the supply voltage drops below ±6 V, while the amplifier still retains its DC operating adjustment. The circuit features suppression of unwanted signals at the inputs, during switch-on and switch-off. The mute circuit can also be activated via pin 2. When a current of 300 mA is present at pin 2, the circuit is in the mute condition. The device is provided with two thermal protection circuits. One circuit measures the average temperature of the crystal and the other measures the momentary temperature of the power transistors. These control circuits attack at temperatures in excess of +150 °C, so a crystal operating temperature of max. +150 °C can be used without extra distortion.

Power Amplifier Sanken 1000 watt

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This is a circuit of 1000watt power amplifier. This time I don't have a picture to the circuit board, but because the amplifier circuit is quite simple, you can design it yourself PCB easily or you can order it at the store PCB audio kit in the center of electronic singosaren oriental, solo.

Skema Rangkaian Sanken 1000 watt

The assemble cables for DC power supply and output transistors must be large, use size 1.5-3mm for large current passed. The supply used transformer with 20A/45Ct and at least 4x10000uf/80 volt capasitor. this circuit is able to supply power 10000watt therefore the power transistor will be very hot, give good cooling fan on the power transisitor

Transitor alternative to replacement of the 2SA1494 is 2SA1216 From SANKEN. The transistor has a 200-350 watt power dissipation of each pair so that for long-term operation of more durable. Keep in mind, usually sold a pair of power transistors with its complement, so you can not buy 2SC2922 alone without 2SA1216 or 2SA1494 without 2SC3858. The price range for transitor tsb is 30-40 thousand Rupiah / pair.

Rangkaian 100 watt Sub-Woofer Amplifier

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This is the circuit of subwoofer amplifier. This amplifier can produce an output of 100Watt. There are seven transistors including four in the output stage. The transistors Q1 and Q2 form the preamplifier stage. Transistors Q4 to Q7 form the output stage. Since no ICs are used the circuit is very robust and can be easily assembled on a general purpose PCB.

Skema rangkaian 100 watt sub-woofer amplifier

Note:
Use powered a +35V/-35V, 5A dual power supply.
All electrolytic capacitors must be rated 100V.
The transistor Q4 to Q7 must be fitted with heat sinks.


Transistor 2N3773 and 2N6609

Transistor 2N3773 (NPN) and (PNP) 2N6609 are PowerBase_ power transistors designed for high power audio, disk head positioners and other linear applications. These devices can also be used in power switching circuits such as relay or solenoid drivers, DC−DC converters or inverters.


Features Transistor 2N3773

Pb−Free Packages are Available
High Safe Operating Area (100% Tested) 150 W @ 100 V
Completely Characterized for Linear Operation
High DC Current Gain and Low Saturation Voltage
hFE = 15 (Min) @ 8.0 A, 4.0 V
VCE(sat) = 1.4 V (Max) @ IC = 8.0 A, IB = 0.8 A
For Low Distortion Complementary Designs


MAXIMUM RATINGS Transistor 2N3773

Collector − Emitter Voltage: 140 Vdc
Collector − Emitter Voltage: 160 Vdc
Collector − Base Voltage:160 Vdc
Emitter − Base Voltage: 7 Vdc
Collector Current Continuous: 16 Adc
Base Current Continuous 15 Adc
Total Power Dissipation : 150 Watt.
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Rangkaian Power Amplifier BTL

type='html'>Power Amplifier BTL

Audio amplifiers operate either in a BTL (bridged) or single-ended ("normal") configuration. In the single-ended setup, the output lead goes to the "hot" or "+" side of the load (speaker or speaker box since we are talking audio) and the "-" or "negative" side of the load is tied to a common ground shared with the amplifier. In the BTL configuration, one amp is connected to the "+" side of the speaker (load) and a second amp is connected to the "-" side of the load. For this to work, the output signal from the second amplifier must be a "mirror image" (identical in every respect, but 180 degrees out of phase) of the output from the first amp. The BTL configuration is most often seen in low-voltage, battery-powered applications (like cell phones or "walkman" type personal tape or cd players etc) or in automotive applications over about 10 watts per channel.

In the BTL configuration, each amp drives half the load impedance. With the signals being out of phase, the voltage swing across the load appears to be doubled, and with each amp driving half the impedance the current is doubled. In theory the bridged pair will produce 4 times the power into the load that either amp acting alone could provide. In reality it seldom works that well.

This is an power amplifier circuit of a BTL system, which comprises a first op-amp chip which outputs an output signal having a same phase as an input signal input to a signal input terminal, a second operational amplifier which outputs an output signal having an opposite phase to the input signal, a voltage divider which generates a midpoint voltage of the input signal, a first resistor connected between an output terminal and a negative phase input terminal of the first operational amplifier, second and third resistors connected in series between the negative phase input terminals of the first and second operational amplifiers, a fourth resistor connected between an output terminal and the negative phase input terminal of the second operational amplifier, and an impedance converter connected between a midpoint voltage node of the voltage divider and a series-connection node of the second and third resistors. (end of abstract)

Gambar Rangkaian Power Amplifier BTL

List Componet:

R1, R2,R3, R4, R6..................... 10kOhm.
R3............................................. 20kOhm.
C1, C2, C3, C4........................... 10µF.
Catu daya (VCC) ±12 V.
.

3 led Level Audio amplifier Indicator

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This circuit ican be used to show the power output level of any audio amplifier. The circuit is very simple and displays three power levels that can be set to any desired value. For a standard HiFi stereo power amplifier like the 25W MOSFET Audio Amplifier.

Skema Rangkaian 3 led Level Audio amplifier Indicator

Component List Of 3 led Level Audio amplifier Indicator

R1.................. 100K 1/4W Resistor
R2.................. 50K 1/2W Trimmer Cermet
R3.................. 330K 1/4W Resistor
R4.................. 1M2 1/4W Resistor
R5.................. 470K 1/4W Resistor
R6,R7............. 500K 1/2W Trimmers Cermet
R8.................. 1K5 1/4W Resistor
R9-R11............ 470R 1/4W Resistors
C1.................. 47pF 63V Ceramic Capacitor
C2.................. 100nF 63V Polyester Capacitor
C3.................. 47µF 25V Electrolytic Capacitor
C4.................. 1µF 25V Electrolytic Capacitor
D1.................. BZX79C5V1 5.1V 500mW Zener Diode
D2.................. 1N4148 75V 150mA Diode
D3-D5.............3mm. Yellow LEDs
IC1.................. LM339 Quad Voltage Comparator IC
SW1.................. SPST Slider Switch
B1.................. 9V

Other settings are possible IC1A is the input buffer, feeding 3 voltage comparators and LEDs drivers by means of a variable dc voltage obtained by R5 and C4 smoothing action. In order to achieve stability settings, the supply of IC1 and trimmers R6 & R7 is reduced and clamped to 5.1V by Zener diode D1.


About IC LM339

The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage.

Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, they will directly interface with MOS logic- where the low power drain of the LM339 is a distinct advantage over standard comparators.

IC LM339 Applications

• High precision comparators
• Reduced VOS drift over temperature
• Eliminates need for dual supplies
• Allows sensing near GND
• Compatible with all forms of logic
• Power drain suitable for battery operation.

LED Indicator Daya Audio Amplifier

type='html'>LED Indicator Daya Audio Amplifier

This circuit, connected to the loudspeaker output of an audio amplifier, will indicate the instantaneous output power delivered to the loudspeaker(s) by means of six LEDs illuminating one after another by voltage values increasing little by little, providing the visual impression of a luminous bar or column, increasing and decreasing in height following the increase and decrease of the signal’s level.

Skema Rangkaian Indicator Daya Audio Amplifier

Notes:

• The output power indicated by each LED must be doubled when 4 Ohms loads are driven.
• The circuit can be adapted to suit less powerful amplifiers by reducing the number of LEDs and related voltage dividers.

List Component :
R1: 220R 1/2W Resistor
R2,R5,R6,R8: 100R 1/4W Resistors
R10,R12,R14: 100R 1/4W Resistors
R3: 220R 1/4W Resistor
R4,R7: 330R 1/2W Resistors
R9: 560R 1/2W Resistor
R11: 820R 1/2W Resistor
R13: 1K2 1/2W Resistor

D1: 1N4004 400V 1A Diode
D2,D4,D6: BZX79C2V7 2.7V 500mW Zener Diodes
D3,D5,D7,D8,D9,D10 Red LEDs (Any dimension and shape) (See Notes)

The input signal is first rectified by D1 and then sent to six different voltage dividers, one for each LED. In this way, the indication provided by the LEDs illumination of this “Power Display”, will be related to the instantaneous power sunk by the whole loudspeaker cabinet. Six output power levels are displayed by the LEDs in a 2W - 80W range (no setup required). Each nominal power level indication into 8 Ohms load is reached when the respective LED illuminates at full brightness.

Rangkaian Amplifier Mosfet 60watt

type='html'>Amplifier Mosfet 60watt

The following is a 60 - 90W High Quality power amplifier. Circuit topology is about the same of the above mentioned amplifier, but the extremely IRFP9240 Rugged IRFP240 MOSFET devices and are used as the output pair, and well Renowned high voltage Motorola's transistors are employed in the preceding stages. The supply rails prudentially voltage was kept at the rather low value of + and - 40V. For those wishing to experiment, the supply voltage rails could be raised to + and - 50V maximum, allowing the amplifier to approach the 100W into 8 Ohm target

Skema Rangkaian 60watt Amplifier Mosfet

Note:

• A small, U-shaped heatsink must be fitted to transistor Q6 & Q7.
• Mosfet Q8 & Q9 must be mounted on large heatsinks.
• Quiescent current can be measured by means of an Avo-meter wired in series to the positive supply rail and no input signal.
• Set the Trimmer R10 to its minimum resistance.
• Power-on the amplifier and adjust R10 to read a current drawing of about 120 - 130mA.
• Wait about 15 minutes, watch if the current is varying and readjust if necessary.

List Component:
R1_______________47K 1/4W Resistor
R2_______________4K7 1/4W Resistor
R3_______________22K 1/4W Resistor
R4_______________1K 1/4W Resistor
R5,R12,R13_________330R 1/4W Resistors
R6_______________1K5 1/4W Resistor
R7_______________15K 1/4W Resistor
R8_______________33K 1/4W Resistor
R9_______________150K 1/4W Resistor
R10______________500R 1/2W Trimmer Cermet
R11______________39R 1/4W Resistor
R14,R15___________R33 2.5W Resistors
R16______________10R 2.5W Resistor
R17______________R22 5W Resistor (wirewound)
C1_______________470nF 63V Polyester Capacitor
C2_______________470pF 63V Polystyrene or ceramic Capacitor
C3_______________47µF 63V Electrolytic Capacitor
C4,C8,C9,C11________100nF 63V Polyester Capacitors
C5_______________10pF 63V Polystyrene or ceramic Capacitor
C6_______________1µF 63V Polyester Capacitor
C7,C10____________100µF 63V Electrolytic Capacitors
D1_______________1N4002 100V 1A Diode
D2______________5mm. Red LED
Q1,Q2,Q4__________MPSA43 200V 500mA NPN Transistors
Q3,Q5____________BC546 65V 100mA NPN Transistors
Q6______________MJE340 200V 500mA NPN Transistor
Q7______________MJE350 200V 500mA PNP Transistor
Q8______________IRFP240 200V 20A N-Channel Hexfet Transistor
Q9______________IRFP9240 200V 12A P-Channel Hexfet Transistor

Rangkaian 500Watt Power Amplifier

type='html'>500Watt Power Amplifier

There are some important updates to this project, as shown below. Recent testing has shown that with the new ON Semi transistors it is possible to obtain a lot more power than previously. The original design was very conservative, and was initially intended to use 2SA1492 and 2SC3856 transistors (rated at 130W) - with 200W (or 230W) devices, some of the original comments and warnings have been amended to suit.

Skema Rangkaian 500Watt Power Amplifier

Note:

• This amplifier is not trivial, despite its small size and apparent simplicity. The total DC is over 110V (or as much as 140V DC!), and can kill you.
• The power dissipated is such that great care is needed with transistor mounting.
• The single board P68 is capable of full power duty into 4 Ohm loads, but only at the lower supply voltage.
• For operation at the higher supply voltage, you must use the dual board version.
• There is NO SHORT CIRCUIT PROTECTION. The amp is designed to be used within a subwoofer or other speaker enclosure, so this has not been included. A short on the output will destroy the amplifier.

Please note that the specification for this amp has been upgraded, and it is now recommended for continuous high power into 4 Ohms, but You will need to go to extremes with the heatsink (fan cooling is highly recommended). It was originally intended for "light" intermittent duty, suitable for an equalised subwoofer system (for example using the ELF principle - see the Project Page for the info on this circuit). Where continuous high power is required, another 4 output transistors are recommended, wired in the same way as Q9, Q10, Q11 and Q12, and using 0.33 ohm emitter resistors.

Continuous power into 8 ohms is typically over 150W (250W for ±70V supplies), and it can be used without additional transistors at full power into an 8 ohm load all day, every day. The additional transistors are only needed if you want to do the same thing into 4 ohms at maximum supply voltage! Do not even think about using supplies over ±70V, and don't bother asking me if it is ok - it isn.

Power Amplifier Berbasis IC LM12

type='html'>Rangkaian Power Amplifier Berbasis IC LM12

This is 80Watt power amplifier OCL circuit using devices pillar is the integrated circuit LM12. This interesting routes many good bass and treble alive. If a friend is the CD therefore has a beautiful voice and Pre Tone Control is good that some will take something very magical. Importantly should choose Power supply source, which has been fairly high voltage class 38Vdc GND 38V-3A is the current low level. To decorate the fines resulting from the size finely R4 2 ohm/4W Idle current about 30mA, or with the whole center just before. Almost forgotten friends should choose the material is good, good, especially IC LM12 and Transistor everyone.

Skema Rangkaian Power Amplifier LM12

Layout IC LM12

The LM12 is a power op amp capable of driving ±25V at ±10A while operating from ±30V supplies. The monolithic IC can deliver 80W of sine wave power into a 4Ω load with 0.01% distortion. Power bandwidth is 60 kHz. Further, a peak dissipation capability of 800W allows it to handle reactive loads such as transducers, actuators or small motors without derating. Important features include:

• input protection
• controlled turn on
• thermal limiting
• overvoltage shutdown
• output-current limiting
• dynamic safe-area protection

The IC delivers ±10A output current at any output voltage yet is completely protected against overloads, including shorts to the supplies. The dynamic safe-area protection is provided by instantaneous peak-temperature limiting within the power transistor array.

The turn-on characteristics are controlled by keeping the output open-circuited until the total supply voltage reaches 14V. The output is also opened as the case temperature exceeds 150°C or as the supply voltage approaches the BVCEO of the output transistors. The IC withstands overvoltages to 80V.

Rangkaian STK 4192 Power Amplifier 50 Watt Stereo

type='html'>STK 4192 Power Amplifier Circuit Features

• The STK4102II series (STK4192II) and STK4101V series (high-grade type) are pin-compatible in the output
• range of 6W to 50W and enable easy design. Small-sized package whose pin assignment is the same
• as that of the STK4101II series
• Built-in muting circuit to cut off various kinds of pop noise
• Greatly reduced heat sink due to substrate temperature 125°C guaranteed
• Excellent cost performance

Layout STK 4192 Power Amplifier

Skema Rangkaian STK 4192 Power Amplifier 50 Watt Stereo

Component List

R1___________ 56KΩ 1/4W Resistor
R2___________ 56KΩ 1/4W Resistor
R3___________ 1KΩ 1/4W Resistor
R4___________ 1KΩ 1/4W Resistor
R5___________ 560Ω 1/4W Resistor
R6___________ 560Ω 1/4W Resistor
R7___________ 100Ω 1/4W Resistor
R8___________ 100Ω 1/4W Resistor
R9___________ 56KΩ 1/4W Resistor
R10__________56KΩ 1/4W Resistor
R11__________3.3KΩ 1/4W Resistor
R12__________3.3KΩ 1/4W Resistor
R13__________3.3KΩ 1/2W Resistor
R14__________3.3KΩ 1/2W Resistor
R15__________4.7Ω 1/4W Resistor
R16__________4.7Ω 1/4W Resistor
R17__________1KΩ 1/2W Resistor
R18__________1KΩ 1/4W Resistor

C1___________ 400pF Polyester Capacitor
C2___________ 400pF Polyester Capacitor
C3___________ 2.2µF Polyester Capacitor
C4___________ 2.2µF 50V Electrolytic Capacitor
C5___________ 100µF 50V Electrolytic Capacitor
C6___________ 100µF 50V Electrolytic Capacitor
C7___________ 0.1µF 50V Electrolytic Capacitor
C8___________ 0.1µF 50V Electrolytic Capacitor
C9___________ 10µF 50V Electrolytic Capacitor
C10___________ 10µF 50V Electrolytic Capacitor
C11___________ 47µF 50V Electrolytic Capacitor
C12___________ 47µF 50V Electrolytic Capacitor
C13___________ 100µF 50V Electrolytic Capacitor
C14___________ 10µF 50V Electrolytic Capacitor
IC___________ STK4192II Integrated STK Power Amplifier series

power sapply recommend for the STK 4192

Tips that bass sound more felt

according to experience, you have to do a little experiment for you to get the best bass sound, stalwart, gigantic. To get the best bass sound between the subwoofer and the room you, then you should get a 'pass that point. the following manner:

1. Place the subwoofer on your location on our seat. (sub Woofer do not be put on the table / cupboard you high more than 1 / 2 meter)
2. Turn the sub Woofer and you do not forget to disconnect the speaker Amplifier.
3. Play a song you like, which have gained a good frequency bass
4. Then try running memutari room, see the characters that appear bass.
5. You will hear some of the bass sound quality improvements in some corner of the room. This happens due to the interaction between low-frequency space and you. Nah corners you can select as a "node" or the point pas you need to immediately place your subwoofer in a corner of it.

Rangkaian Power Amplifier MJ15003 -MJ15004

type='html'>Power Amplifier MJ15003 -MJ15004

When I began the design of this amp, my goal was to make a product better suited for the reproduction of complex music and voice. Although I emphasize the high electrical properties, the most important requirement is to create a superior sound, vivid images and superb spatial aural clarity.

Although the average level of listening is usually less than 10 watts, my design concept was to an amplifier with plenty of reserves, but the deviation is for Class A, at the height of the audience of cross-over distortion at a very low level. There is no place in the pathway, enhances the precision of the tonal characteristics of instruments and voices clearly. This Amplifier is virtually zero phase distortion over the audio range resolution is perfect and completely color the sound.

Skema Rangkaian Power Amplifier MJ15003 -MJ15004

Amplifier Specification:

Maximum Output: 240 watts rms into 8 Ohms, 380 watts rms into 4 Ohms
Audio Frequency Linearity: 20 Hz – 20 kHz (+0, -0.2 dB)
Closed Loop Gain: 32 dB
Hum and Noise: -90 dB (input short circuit)
Output Offset Voltage: >13 mV (input short circuit)
Phase Linearity: > 13 0 (10 Hz – 20 kHz)
Harmonic Distortion: > 0.007% at rated power
IM Distortion: > .009% at maximum power
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12 Volt Hifi Power Amplifier

type='html'> Rangkaian 12 Volt Hifi Power Amplifier

This is circuit amplifier contains only an op-amp and four transistors (easily available from your electronics junk box). the op-amp used is uA 741 which produces the required gain.The four transistors are wired as complementary Darlington’s which produces the drive for the speaker.

Skema rangkaian 12 Volt hifi power amplifier

Layout Op-Amp UA741

The voltage drop across the resistors R2 and R3, are used as the input of the Darlington pairs . As the input current to the op-amp depends on the level of the signal op amp is amplifying the voltage drop across the resistors R2 and R3 will be proportional to the input signal.These voltage drops are given to the base of Darlington pairs. The amplification is stabilized as a result of the negative feedback from the junction of collectors of Q2 and Q4. The theory may seem little awkward for you.But its working good.Such a simple but stable circuit as this can produce a reasonable output of 12W on a 4 Ohm speaker.

IC Op-Amp UA741

The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. The high gain and wide range of operating voltages provide superior performances in integrator, summing amplifier and general feedback applications. The internal compensation network (6dB/ octave) insures stability in closed loop circuits.

Data max Ic UA741
* Symbol Parameter UA741M UA741I UA741C Unit.
* Supply voltage (VCC) ±22 V.
* Differential Input Voltage (Vid ) ±30 V.
* Input Voltage (Vi ) ±15 V.
* Power Dissipation (Ptot) 500 mW.
* Storage Temperature Range (Tstg) -65 to +150 °C.

Rangkaian 8Watt Audio Amplifier TDA2030

type='html'>Audio TDA2030

This is a circuit of 8-watt audio amplifier IC TDA2030-based mono. When you use 4 ohm speakers then you get 14 watts output power, and around 8 watts if you use 8 ohm loudspeaker.

Skema rangkaian audio TDA2030

Although the TDA2030 is capable of delivering 20 watts of audio power, I deliberately reduced the output to about 8 watts to 10 watts drive speakers. This is more than adequate for a smaller room. Input sensitivity is 200mV. Higher input levels naturally will give greater output, but no distortion should be heard. The gain is set by the 47k and 1.5k resistors. The TDA2030 IC is affordable and makes a good replacement amplifier for low to medium audio power systems. Incidentally, it is speaker efficiency that determines how "loud" the sound is. Speaker efficiency or sound pressure level (SPL) is usually quoted in dB / meter. A speaker with an SPL of 97dB / m will sound louder than a speaker with an SPL of 95dB / m.

Absolute Maximum Ratings IC TDA2030

Supply voltage ± 18 (36) V
Input voltage Vs
Differential input voltage ± 15 V
Output peak current (internally limited) 3.5 A
Power dissipation at Tcase = 90°C 20 W
Tj Stoprage and junction temperature -40 to 150 °C

IC TDA2030 pinning

Kit Amplifier TDA2030

3 - 6 volt Mini amplifier

type='html'>Rangkaian 3 volt Mini amplifier

This is a mini 2W audio amplifier is suitable for small handheld radios and other portable audio gadgets. The amplifier circuit can be run from 3Volt. This Mercury is ideal for battery operated module. The potentiometer circuit can be used to control volume. Capacitor C1 and C2 are designed to filter supplyvoltage If the battery separator is used as operations offer source.For using batteries C1 and C2 are not required.

Skema Rangkain 3 volt Mini Amplifier

TDA7052 is a mono output amplifier in 8-comng Head DI package (DIP). The device is designed primarily for battery-operated portable audio circuits. Features include TDA 7052, no external components needed, no switch-on or switch-off button sounds great overall stability and very low power consumption (quiescent current of 4 mA), low THD, it is not necessary any cooler and short-circuit proof.

Profit TDA 7052 is set internally at 40 dB. . Compensate for the reduction of output power due to low voltage TDA7052 uses Bridge-Tied-Load principle(BTL), which can provide power about 1 to 2 W RMS (THD = 10%), 8 ohm load to the power supply 6 V.

Rangkaian Amplifier Stereo IC TDA2004

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Stereo audio frequency amplifier on a chip TDA2004 is designed for use in portable and automotive fidelity, is protected against short circuit at the output, overheating, excess voltage. The power amplifier IC chips designed specifically for car radio application, are the high current capability (3.5A) and the capability to drive a very low impedance (down to 1.6R).

Skema rangkaian amplifier stereo IC TDA2004

The TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very inductive loads, load dump voltage surge, overheating, output AC-ground short, fortuitous open ground. Other important things is space and cost saving : very low external components counts, and very simple mounting system with no need for electrical isolation between the package and the heat sink because the heat contact metal of the package is already connected to ground.

The maximum operating DC voltage on the TDA2004A is 18 V. However the device can withstand a DC voltage up to 28V withno damage. Thiscouldoccur during winter if two batteries are series connectedto crank the engine.

Amplifier circuit Features:

• Frequency .............................................................. 40-20000 Hz
• Supply voltage nom ............................................... 14,4 V
• Power supply .......................................................... 8-18
• Distortion (max ).................................................... 0,2%
• Current consumption (at Uin = 0 )....................... 44 mA
• Output power at R heating. = 2 ohms ................. 10 W
• Load resistance (at least) ...................................... 2 Ohms
• Gain, dB ................................................................. 50
• Input Impedance .............................................. 0,2 MOhm

Absolute maximum ratings IC TDA2004

• Opearting Supply Voltage.................................... 18 V
• DC Supply Voltage................................................ 28 V
• Peak Supply Voltage (for 50ms).......................... 40 V
• Output Peak Current (non repetitive t = 0.1ms) 4.5 A
• Output Peak Current (repetitive f . 10Hz)........... 3.5 A
• Power Dissipation at Tcase = 60°C ..................... 30 W
• Tstg Storage and Junction Temperature............. –40 to 150 °C