Halogen lamp protector (CB7865E)

Found in a 90s 303 Circuits, this circuit aims to provide a soft start for a low voltage halogen lamp. The MOSFET supports an equivalent.

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Class B Low Power Amplifier (CB19069E)
This small amplifier, close to 1 W, was found in a 1963 documentation. The class B circuit uses...
Differential microammeter (CB7362E)
This circuit was obtained in a 1964 Electronic Design. The transistors are from the era and the...
Frequency Divider with the 4017 (CB11406E)
This circuit divides frequencies of up to about 7 MHz by 10 and by 100. The input signal must be...