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.
Found in a publication from the 60's, this circuit uses the CK722, germanium transistor of the...
From an input signal, and using an unusual current source, this circuit generates a ramp, that is, a...
With this timer we can start between 30 seconds and one and a half seconds, time set in the pot....