100 MHz harmonic oscillator (CB9659E)

This Pierce oscillator was found in American documentation from the 1980s. Transistors support modern equivalents.

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Old Transistorized Amplifier (CB18332E)
This amplifier with a few watts of power was found in a Japanese technical documentation from the...
Operational Constant Current Source (CB13407E)
This circuit is from a 1977 National Semiconductor integrated circuits manual. The circuit admits...
12 V x 5A power supply (CB17051E)
This conventional power supply uses discrete components and can provide 12 V or 13.6 V output with...