LED in 240 VAC (CB21709E)

This circuit can also be adapted to work in the 220 V and 110 V power grid, just observing the value of C and its working voltage.

S-meter (CB1405E )
The S-meter is signal strength meter, coupled to telecommunications receivers to indicate the...
Operational Connected Optocoupler Shield (CB16018E)
This circuit is suggested by Motorola, making it possible to use an optical coupler of type 4N26...
Dynamic Analyzer (CB12833E)
Dynamic analyzer is another name given to a signal follower or signal chaser. This circuit is from...