This circuit for voltmeter has an output of 1 V for 100 uA having been suggested by American publication of 1969. The transistors are general purpose types.
This Pierce oscillator was found in American documentation from the 1980s. Transistors support modern...
This circuit provides a good audio power from a signal at least 1 V of amplitude. The MOSFET must...
This circuit was obtained from a European magazine of the 1990s. The integrated circuit used is...