Gemanium Transistors DC Amplifier (CB14775E)

This instrumentation circuit was found in the 1960 transistor application manual. More modern transistors can be used.

20 W Amplifier 2SC492 (CB18907E)
This amplifier was found in a Japanese publication in 1972. Transistors are uncommon today, and...
12V Transformerless Power Supply (CB14961E)
The current of this source is 200 mA at the most, and the output depends on the zener that may...
Playback amplifier (CB7335E)
Found in Mallory documentation from 1968 this circuit uses an integrated circuit from that time. The...