This heating element control with up to 3 kW was obtained from an old American documentation. SCRs must be load-compliant, and transistors can be current equivalents.
This circuit was found in a Popular Electronics from the 90's. The circuit can be used to convert...
This circuit works with only 1.5 V and can be powered by a solar panel. The circuit is from 1991....
In fact, the original American publication exaggerated a little about the range that a good...