In the 110 V network, capacitors of 200 V or more and in the 220 V network, capacitors of 400 V or more, can be tested in this simple circuit. The indication is given by a neon lamp.
This circuit was originally designed to be used in the car. When talking, the sound of the voice...
The transistor for this flashlight brightness control may be the BD135. The circuit is from 1978...
We found this circuit in Radio Electronics magazine from October 1966. The circuit uses a 15 V...