This circuit from a June 1957 Radio Electgronics is for oscilloscopes of the time with a maximum frequency of a few megahertz. The circuit is battery powered.
When the phone rings, a high-powered incandescent light comes on. This circuit can be interesting to...
The purpose of this circuit is to cut the peaks of a sinusoidal signal so that it is close to a...
This simple 3-channel passive mixer can be used with low-intensity signal sources but requires...