This is a simple design circuit for remote controller tester circuit. This circuit is based on infrared sensor IC TSOP 1738. This is the figure of the circuit.
Operation of the remote control tester circuit is begin from the IR waves fall on the sensor it output changes to low state. This makes the transistor Q1 ON and LED will blink according to the code contained in the signal. So for press of each button the LED blinks in different ways. This is a good indication of the working of remote. The diode D1drops 0.7 V to give the IC ~ 5V supply from the available 6V .R2 is a current limiting resistance. This circuit is use power supply a 6V battery to power up the circuit. This circuit can be used to test remotes operating in the 38 Khz carrier frequency. Almost all remotes fall into this category so no problem.
Operation of the remote control tester circuit is begin from the IR waves fall on the sensor it output changes to low state. This makes the transistor Q1 ON and LED will blink according to the code contained in the signal. So for press of each button the LED blinks in different ways. This is a good indication of the working of remote. The diode D1drops 0.7 V to give the IC ~ 5V supply from the available 6V .R2 is a current limiting resistance. This circuit is use power supply a 6V battery to power up the circuit. This circuit can be used to test remotes operating in the 38 Khz carrier frequency. Almost all remotes fall into this category so no problem.
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