RF and Audio Probe (CB5912E)

Any FET can be used on this 80's circuit. Power can be supplied with batteries. The output is applied to the input of a small audio amplifier.

VIPer01 High Voltage Converters (COM072E)
August 2016 - It can be obtained from Mouser Electronics the new VIPer01 high voltage converter...
Timer Very Simple (MSB059)
A capacitor stores electrical charges. This component is formed by two metal parts called...
5 V Adjustable Switching Regulator (CB5880E)
This circuit uses components from the time it was published. The circuit is from the 80's. The...