This high sensitivity sensor was found in a 1967 General Electric SCR manual. The circuit admits equivalents by triggering a load according to the used SCR.
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...