Wattmeter (T1351E)

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

Cascading Voltage Triplicator (CB15448E)
The circuit shown in the figure triples the alternating voltage providing a continuous output...
Power Control with L120 A (CB15125E)
This triac power control circuit makes use of an SGS integrated circuit, which is uncommon...
Alternating Flash 555 (CB25533E)
This circuit was found in the November 1992 Radio Electronics magazine. The resistor in series with...