30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

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Complementary transistors Monostable (CB19063E)
This circuit from a 1967 publication turns a short pulse into a square signal whose duration...
Fast Answer Game (CB10810E)
This circuit was obtained in the publication 101 Electronic Projects of 1979. The circuit can also...
Transistor Intercom (CB1382E )
n be assembled with BC558 transistors for low power transistors and a BD136 for the output. The...