This 1950s audio amplifier uses output tubes of type 1625 in its output stage. The Class B circuit provides a few watts of power and uses transformers that are not readily available today.
The circuit presented is a simple MW tuner that can be plugged into the input of any audio...
This counter performs the same function as the 4020, but includes an internal oscillator. The...
I found this simple circuit an English magazine from 1984. The circuit can be easily assembled by simply...