红外线远程控制电路 Infa-Red Remote Cont

来源:网络发布者:电工基础发布时间:2026-03-07 10:34

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 one. This remote transmits a tone using an infa-red LED. This tone

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 one. This remote transmits a tone using an infa-red LED. This tone is decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental activations.

Schematic For Transmitter

红外线远程控制电路 Infa-Red Remote Cont

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.

相关热词：#红外线

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