Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be mounted on a heat sink. The transformer is 25 V with a current of 3 to 4 A.
This simple charger for AA, C and D batteries was found in Elementary Electronics from 1977. The...
This analog video fader circuit smoothly transitions between two signals. It was found in the...
This circuit is based on an operational amplifier that is uncommon today, but that can reach the...