Wattmeter (T1351E)

This circuit is from a February 1949 Radio Electronics magazine. The circuit uses 3 tubes and includes the power supply.

Product Detector for SSB (CB26010E)
This circuit with the NE602 was found in the February 1997 Electronics Now magazine. The NE602...
Multi impedance amplifier (CB23632E)
We found this circuit in Radio Electronics magazine from September 1959. The circuit has different...
Remote temperature sensor (CB8713E)
Found in a 90s Radio Electronics, this circuit uses an AD590 or AD592 for remote temperature...