Found in a Popular Electronics from the 90s, this circuit can be used as an electrifier. T1 can be an old TV fly back transformer or an ignition coil.
Found in an American publication from the 90s, this circuit allows the supply of 3, 6 and 9 V...
This circuit was found in Motorola's 1968 documentation. It can be built on current equivalent...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...