This fader or fader was found in a 90s Popular Electronics. The circuit uses transistors that are equivalent to BC548. Input and output cables must be shielded.
We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be...
This 80's circuit can be made with current comparators. Rectification accuracy is 1% DC up to 100...
When the light falling on the sensor is cut off, the SCR fires, powering the lamp. Remember that...