Wednesday 16 February 2011

PHONE TRANSMITTER – 2

 

This circuit has poor features but you can try it and see how it performs. It uses a PNP transistor and requires a separate antenna. It also has a supply of less than 1.9v, via the red LED. It would be better to put 2 LEDs in series to get a higher voltage. It is activated when the phone is picked up.

PhoneTransmitter-3

PhoneTx-3

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