Obtained from the 1976 Siemens integrated circuits manual, this audio amplifier has thermal shutdown. The power supply is 12 V, as the indicated use is in the car.
The circuits shown below consist of diode protections against accidental polarity reversal in the supply...
This FM transmitter was described in the Radio Electronics magazine of June 1963. It operates in...
The current can be kept constant in the load circuit using the integrated regulator LM350. The...