Rankaian Konverter 12volt - 5 volt Meggunakan Dioda Zener

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Skema Rangkaian Konverter 12 Volt ke 5 Volt

Converter is a series of functions to change the voltage 12 to be 5 Volt. the core of this series is the zener diode. due to a fall in voltage Zener diode 12 will be 5.7 volt. voltage in 5.7 volt electrical currents strengthened by taransiator Q1

To get a different output voltage you can change the zener diode as needed. for example, if you need a converter from 12 to 9 volt change zener Diode eat 5.7 to 10 volt

components List:

• R1 = 560 ohm
• C1 = 1000uF/40V
• C2 = 10uF/25V
• C3 = 330nF
• Z1 = 5,7V
• Q1 = ECG184, NTE184

Rangkaian Regulator menggunakan Diode Zener

type='html'>Regulator is a circuit of regulations or the voltage output from a ration resources so that the effects of increased tension or decrease in net does not affect the voltage ration power to be so stable.

Rangkaian Dasar Regulator Diode Zener

Simple circuit regulator , working on the zener breakdown voltage so that it produces the same output with the zener voltage, however, this circuit is only useful if the current burden of not more than 50mA. simple circuit regulator using zener diode can you see in the circuit under the scheme

Skema rangkaian Regulator Dioda Zener dasar

voltage output:
Resistor value

With this design approach, you must check the power ratings of your output resistor and Zener diode to make sure they are able to handle the power requirements.

The power rating load of resistor and zener diode must be at least of they are able to handle
Rangkaian Regulator Zener dengan Transistor

Regulator This is basically the zener regulator is configured with an NPN transistor to produce a large amount of cash. V BE is the base-voltage emitor of the size of the transistor Q1 between 0.2 - 0.7 volt depending on the type of transistor used. By ignoring the current IB flowing in the transistor base, can be counted prisoners of R2 that is needed is:

Skema rangkaian Regulator menggunakan Diode Zener

Iz is a minimum flow required by dioda to reach the zener voltage is zener breakdown. Large currents can be known from the datasheet that the size of the approximately 20 mA

If the required portion of greater flow, calculation of base flow in the IB on the circuit can not be ignored anymore. As is known, large currents IC akan proportionate flow straight to the IB or with the right formula

For such purpose, the transistor Q1 can be replaced with a Darlington tansistor usually have a value of b is quite large. With the Darlington transistor, the base flow of small currents can produce a larger IC

Karakteristik Tegangan Dioda Zener

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Gambar dan simbol dioda zener

Zener diode is specially designed to operate in the reverse biased mode. It is acting as normal diode while forward biasing. It has a particular voltage known as break down voltage, at which the diode break downs while reverse biased. In the case of normal diodes the diode damages at the break down voltage. But zener diode is specially designed to operate in the reverse breakdown region.

The principle of zener diode is the zener breakdown. When a diode is heavily doped, it’s depletion region will be narrow. When a high reverse voltage is applied across the junction, there will be very strong electric field at the junction. And the electron hole pair generation takes place. Thus heavy current flows. This is known as Zener break down.

So a zener diode, in a forward biased condition acts as a normal diode. In reverse biased mode, after the break down of junction current through diode increases sharply. But the voltage across it remains constant

Gambar Karakteristik Tegangan Diode zener

Funsi dioda Zener

Zener function is to stabilize the voltage. At the time connected in parallel with a source voltage swings are installed so that the ration-back, a zener diode will act like a short circuit (short-circuit) voltage when the voltage reaches the diode damage. The result, the voltage will be limited to a number that has been known previously.

Aplikasi dioda zener

DIODA ZENER

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Phenomena tegangan breakdown dioda ini mengilhami pembuatan komponen elektronika lainnya yang dinamakan zener. Sebenarnya tidak ada perbedaan sruktur dasar dari zener, melainkan mirip dengan dioda. Tetapi dengan memberi jumlah doping yang lebih banyak pada sambungan P dan N, ternyata tegangan breakdown dioda bisa makin cepat tercapai. Jika pada dioda biasanya baru terjadi breakdown pada tegangan ratusan volt, pada zener bisa terjadi pada angka puluhan dan satuan volt. Di datasheet ada zener yang memiliki tegangan Vz sebesar 1.5 volt, 3.5 volt dan sebagainya.

Simbol Zener

Ini adalah karakteristik zener yang unik. Jika dioda bekerja pada bias maju maka zener biasanya berguna pada bias negatif (reverse bias).