Power supply with the 1N34 (CB22541E)

This 6V microsupply with just 2mA current uses a common 1N34 germanium diode. The circuit was found in the February 1958 Radio Electronics magazine.

50 mW Amplifier (CB24449E)
This low-power transistorized amplifier was found in documentation from the 90s. The circuit uses...
Metal Detector (CB12077E)
This circuit is from Popular Electronics from March 1991. It can still be assembled with the...
Symmetric Power Supply (CB15712E)
The voltage of this symmetrical power supply depends on the regulating integrated circuits, which...