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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Transistor Pulse Amplifier (CB16020E)
Suggested by Texas Instruments, this circuit operates with frequencies that can reach some...
Direct relay photo control (CB8332E)
This two-component circuit is from a 1967 Philips documentation. The relay is a high-sensitivity type...
Sequencer 4013 (CB16064E)
We now present the 4013 in its bistable configuration, in which we use 3 flip-flops (1 and a half...