This simple clock can be used to generate signals up to 100 kHz, depending on the crystal. We found it in a 1967 documentation. Note the high supply voltage.
This circuit uses one of the first comercial transistor and is from a 1958’s magazine. Tone...
This circuit adjusts the drained current to values up to 20 A, allowing the testing of power...
Voltage quadrupliers are used in Power supplies, increasing in alternating voltage and converting...