This dimmer for incandescent lamps was obtained from an American 1990s documentation. The circuit accepts triac-like loads that can be virtually any type. Triac must be fitted with a heat sink.
This circuit is from Motorola documentation from the 70s. The transistors used are high voltage types...
This detector with ultra-low deviation was found in an American documentation from the 90s....
This model circuit was found in Radio Electronics magazine from February 1960. The power...