Motorcycle Intercom

249

03:04:39

Add "passenger to pilot" talk to your future road trips.  This uses 12 volt battery power supply with two LM386 IC low gain (around 20 on gain) amplifiers.

In simulator, the two 2 kHz. generators, 1 uf., with switches is where two  electret microphones would be connected and 16 ohm resistors is where  earphone (stereo or mono earphones) connections are located.

Both 4.7 resistors are rated .5 watts.

Headphone output of one side is paired to microphone output of other side.  Earphones need to be small enough to fit inside motorcycle helmet.  Electret microphones need to be close to mouth because of wind and road noise.

published 10 years ago

Adityabhadange

10 years ago

Can someone tell me.. How tp apply vcc to transistor??

lmccoig

10 years ago

Often power supply is on collector of transistor with resistors to lower voltage to base of transistor to allow flow of electrons up through emitter of transistor. Examples of transistors in circuits will show many other ways to connect and power transistors.

yra

10 years ago

Can you change to a bi position switch with earphones normal closed position. Also need a input for cell phone to earphones for music and incoming calls.

yra

10 years ago

Very nice circuit, I'm also A bike rider. I use in-earphones too combat the road noise. I am a lover of music while on the road. You did a great job with the lm386 i know this device very well and it should provide plenty of volume for the road.

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