RF Power Meter (CB4885E)

This RF wattmeter was found in an American 1980s documentation. The components are common and the instrument is an analog microammeter.

Laser Gun (CB4647E)
The purpose of this Hartley oscillator is to produce the shot effect on a toy or other...
Dwell Meter (CB4961E)
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...
3 Channel Mixer (CB1288E)
This simple 3-channel passive mixer can be used with low-intensity signal sources but requires...