Stereo preamplifier TDA3410 (CB21937E)

Taken from the 1982 SGS manual on integrated circuits, this preamplifier was used in commercial equipment at the time.

CMOS Touch Switch (CB12091E)
This circuit, obtained in a 1983 magazine, can drive loads up to 100 mA if the transistors are...
Monostable LM139 (CB15529E)
It is possible to design a monostable multivibrator around a voltage comparator of the four...
Voltage inverter (CB23691E)
This voltage inverter circuit is from a Radio Eklectronics from October 1965. It was used in...