This converter or inverter uses components that are still common. The transformer is the type found in old tube equipment. The power transistors must be mounted on heat radiators.
Found in Motorola documentation from the 1960s, this timing circuit can last up to 10 hours with...
We found this circuit in an American 80's documentation. The circuit can be adapted to function as a...
This configuration uses complementary transistors, one of which is the phototransistor. The other...