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IR Transmitter

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lord_von

New Member
Can anyone pls explain this IR transmitter?

Parts:

R1____________22K 1/4W Resistor
R2____________1 Meg 1/4W Resistor
C1_________0.01uF 16V Ceramic Disk Capacitor
Q1____________2N2222 NPN Silicon Transistor
Q2____________2N2907 PNP Silicon Transistor
LED1__________Infa-Red LED
S1_____________SPST Push Button Switch
B1_____________3 Volt Battery
 

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panic mode

Well-Known Member
it's just an oscillator that uses PNP and NPN trnsistors.
the R/C is probably selected to make it 38kHz which
is common for IR.
 
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