Remote Control Tester:
This handy device tester responds to the signal received from any infrared hand-piece (IR remote control).
Circuit and dealing:
Fig. one shows circuit diagram of the device Tester. it's engineered around infrared (IR) receiver module TSOP1738 (IRRX1), a pnp junction transistor BC557 (T1) and a few alternative parts. A buzzer (optional) will be used at the output for audio indication.
The power offer for the TSOP1738 and junction transistor BC557 springs directly from 230V AC, 50Hz mains offer via condenser C1 and limiting resistance R1. The 5.6V zener diode, 1N4004 diode and filter condenser C2 offer regarding 5V DC offer for the circuit.
For testing, purpose the IR remote towards TSOP1738 and press any of its keys. On doing this, LED1 can blink and therefore the buzzer (if connected) can manufacture sound, which implies your IR remote is functioning fine.
Construction and testing:
An actual-size, single-side PCB for the device tester is shown in Fig. two and its element layout in Fig. 3. when collection the circuit on PCB, enclose it in an exceedingly appropriate plastic case.
Use 2-pin connector CON1 for mains power supply. CON2 is used for connecting the piezo-buzzer, which is optional.
Solder
TSOP1738 on the PCB and cut a hole on the cabinet for it so that the IR
rays transmitted from the remote fall on it easily. If you encounter
any problem with the circuit, verify the test points given in the table.
Since
the circuit is directly powered by 230V AC supply, there is a risk of
electric shock. So enclose it in a proper plastic case to isolate the
circuit from the user.
