This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
We found this circuit in a 1967 American documentation. The diodes are general-purpose and the...
This circuit digitally amplifies a signal providing an output formed by modulated pulses. It is a...
This circuit uses a common general-purpose diode as a sensor. Adjustment of the trigger point is...