This circuit can be used to obtain a zener voltage from a common zener of another value, adjusting in a multimeter. The circuit is from an American documentation of the 1970s.
This circuit can be adjusted to time timer intervals up to1 hour using a 2,200 µF capacitor and a...
This circuit, from a 1978 publication, emits a modulated signal when the fine sensor is...
This circuit for modeling was found in a 1980s documentation. The SCR can be the TIC106 and the...