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AIM:
• To Design a circuit of an electronic infrared communication system to transmit and receive audio (voice/music) signals.
• Develop new ideas to implement this circuit purposely.
• To study the circuitry and different types of components used.
COMPONENTS USED:
IC1…………………………………………………………..UM66
IC2…………………………………………………………..741(2)
IC3……………………………………………………………LM 386
Transistors……………………………………………………BC547, SK100,BC 548, BD 139
Resistors………………………………………………………1k(2),10,82(2),680,4.7k,22k, 10(1w), 10k(3),15k(4),100k.8.2k(2),1.8M
Capacitors………………………………………………………..0.1µ (5), 1 µ 16v, 10 µ 25v, 220 µ 25v (4), 470 µ 16v,1000 µ 16v
Leds………………………………………………………………1
Ir leds………………………………………………………………3
Ir photo transistor l14f2……………………………………………1
Loud speaker 8ohm 1w……………………………………………1
Batteries 9v…………………………………………………………2
Variable resistors(preset)…………………………………………..1M(3),10k
Condenser mic ……………………………………………………..1