This circuit was found in a 1965 Electronic Design. Transistor Q2 must be load dependent. The circuit can be adjusted for currents from 1 to 10 A. The voltage drop is 3 V and the maximum voltage is 35 V.
In this circuit, from a documentation from the 70's, we have the way to control the active cycle of...
This triac phase control circuit uses an integrated circuit not very common today. We found this...
The components of this circuit are exchanged for modern equivalent such as 470 K for the pot and...