Product Detector for SSB (CB26010E)

This circuit with the NE602 was found in the February 1997 Electronics Now magazine. The NE602 integrated circuit is not very common these days.

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Laser Alarm (CB25976E)
This circuit triggers a relay when a light beam that hits the phototransistor is cut off. The...
Photo flip flop (CB23611E)
This flip-flop controlled by an LDR-type photocell was found in Radio Electroinics magazine from...
General purpose preamplifier (CB19071E)
This circuit is from a publication from the 60s. The circuit, with minor changes, can be assembled with...