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 is a kind of Hertz Loop that can be used to check the operation of transmitters and...
This high-impedance headphone circuit was found in a 1990s William Sheets. The power is low, but...
Based on the 555, this circuit was obtained from Internet documentation, serving to generate a...