Control|Pengendali Suhu Ruangan Menggunakan LM 35/TL431

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Control|Pengendali Suhu Ruangan Menggunakan LM 35/TL431

IC LM 35 or TL 431 as a temperature sensor and a carefully shaped Integrated Circuit (IC), where the output voltage output is linear with the temperature changes. This sensor functions as a change of scale fisis temperature to the amount of voltage that has a coefficient of 10 mv / ° C which means that increases in temperature 1 ° C increase will occur then the voltage of 10 MV.

IC LM 35 / TL 431 does not require calibration or adjustment from the outside because of its accuracy until approximately a quarter degree centigrade temperature in the room. Term sensor from - 55 ° C to 150 ° C, IC LM35 / TL 431 is very easy to use, as the work of the indicator display control portion power split. IC LM35/TL431 can absorb a flow of 60 m from supplay so that the heat caused a very low own less
from 0 ° C in room temperature.

in the image on the scheme following a series of show in one of the application of the IC LM 35 / TL 431 temperature sensor as the room temperature controller

Skema Rangkaian Control|Pengendali Suhu Ruangan

Rangkaian Control|Pengendali Suhu an electronic circuit that can be used as automatic temperature control aapplication. The circuit switches a miniature relay ON or OFF according to the temperature detected by the one-chip temperature sensor LM35. When the LM35 detects a temperature higher than the preset level (set by VR1), the relay is actuated. When the temperature falls below the preset temperature, relay is de-energized. The circuit can be powered by any AC or DC 12V supply or battery (100mA min.)

Control|Pengendali Relay MenggunakanTransistor

type='html'>Control (Pengendali) Relay

The following series of functions to control the relay kutup. With an input signal greater than 0.3V pk-pk (100mV RMS) the positive half of the waveform will switch on transistor Q1, and Q2 and the relay. As the input signal switches to its negative transition, Q1 will switch off, but the base current in using-multimeter-to-measure-transistor.html">transistor Q2 continues to flow via the C2, so Q2 and hence load relays remain on. This will happen for any ac signal within 50 to 1000Hz. R1 prevents excessive base current flowing in transistor Q2, if required a series resistor of 100 ohms can be included with C1 to reduce excessive current flow, though this may decrease sensitivity.

Skema rangkaian control (pengendali) Relay

C2 has a dual purpose; as well as smoothing the input signal, it adds a delay to the on / off operation. The delay is dependent on the value of C2 and the coil resistance of the relay. Instead of a relay, a LED and series resistor of 1k could be used instead, however the relay has the advantage of being able to switch large loads on and off. C2 has a dual purpose; as well as smoothing the input signal, it adds a delay to the on / off operation. The delay is dependent on the value of C2 and the coil resistance of the relay. Instead of a relay, a LED and series resistor of 1k could be used instead, however the relay has the advantage of being able to switch large loads on and off.