This very detailed Dimmer was found in an English documentation from the 90's. The SCR could be a modern equivalent like the TIC106. The circuit is only suitable for incandescent lamps.
This low-power transistorized amplifier was found in documentation from the 90s. The circuit uses...
This circuit is from Popular Electronics from March 1991. It can still be assembled with the...
The voltage of this symmetrical power supply depends on the regulating integrated circuits, which...