Gemanium Transistors DC Amplifier (CB14775E)

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

FSK Generator (CB7431E)
This circuit was obtained in a magazine for radio amateurs 73 of the 90s. The circuit is based on...
15 V Regulator MA1539 (CB4017E)
This circuit is from a documentation on the MC1539 from Motorola and may, however, be implemented...
Unijunction Pulse Generator (CB24252E)