This 12 V to 110 V inverter with 100 W was found in a 1977 Signetics manual. The transformer must be rated according to the desired power and the output transistors admit equivalents.
This windshield wiper timer was obtained in an 80's Hands On. The transistor can be the BC548 and...
This circuit was found in a 1977 documentation. It limits the voltage from a source using zener...
This simple circuit found in an American 80's documentation simply blames if there are toxic gases in...