Stereo preamplifier TDA3410 (CB21937E)

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

Sampling and hold 2 (CB8417E)
Found in a 90s Maxim's documentation, this circuit employs three company components and is...
5-Range Ohmmeter for DVM Module (CB25226E)
This circuit for a digital module was found in the September 1989 Radio Electronics magazine. The...
Battery Low Indicator (CB4989E)
The components of this circuit are from the time of its publication in the 1980s. Modern...