This circuit is from an American 80's documentation. The integrated circuit is from the time and the sensor consists of a smoke chamber measuring its transparency change.
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...