红外线远程控制电路Infa-RedRemoteControl

红外线远程控制电路 Infa-Red Remote Control

I have received a number of emails requesting schematics for infa-red remotes. So here is border=0>

Parts:

Part

Total Qty.

Description

Substitutions

R1

1

22K 1/4W Resistor

R2

1

1 Meg 1/4W Resistor

R3

1

1K 1/4W Resistor

R4, R5

2

100K 1/4W Resistor

R6

1

50K Pot

C1, C2

2

0.01uF 16V Ceramic Disk Capacitor

C3

1

100pF 16V Ceramic Disk Capacitor

C4

1

0.047uF 16V Ceramic Disk Capacitor

C5

1

0.1uF 16V Ceramic Disk Capacitor

C6

1

3.3uF 16V Electrolytic Capacitor

C7

1

1.5uF 16V Electrolytic Capacitor

Q1

1

2N2222 NPN Silicon Transistor

2N3904

Q2

1

2N2907 PNP Silicon Transistor

Q3

1

NPN Phototransistor

D1

1

1N914 Silicon Diode

IC1

1

LM308 Op Amp IC

IC2

1

LM567 Tone Decoder

LED1

1

Infa-Red LED

RELAY

1

6 Volt Relay

S1

1

SPST Push Button Switch

B1

1

3 Volt Battery

Two 1.5V batteries in series

MISC

1

Board, Sockets For ICs, Knob For R6, Battery Holder

RELAY

1

6 Volt Relay

Notes:
1. To adjust the circuit, hold down S1 while pointing LED1 at the receiver. Adjust R6 until you hear the relay click.

2. You can increase range by using a high output LED for LED1.

3. Bright light will stop the receiver from responding to the transmitter.