We found this small FM transmitter in an Australian publication from 1991. The 3-transistor circuit has a range on the order of 400 meters.
This circuit was obtained from the 1976 Siemens Integrated Circuits Manual. It is the circuit for...
The circuit is a multivibrator version using two NPN general purpose transistor. This circuit can...
The sensor of this circuit is a thermistor of the same value as the adjustment circuit formed by...