We found this circuit in a 1965 General Electric manual. The controlled load depends on the Triac and the 100 uF capacitor delay time.
The accuracy of this 3-digit digital capacitor meter depends on the tolerance of the components used and...
This circuit was found in the March 1997 Electronics Now magazine. It uses a common analog...
This is a diagram of a 1958 commercial receiver. The circuit was found in documentation at the...