This circuit was found in a 1967 General Electric manual. It shows a SCR control with unijunction and zener diode. The triac depends on the controlled load.
The purpose of this circuit is to convert a rectangular pulse into a sharp pulse for triggering an SCR. The...
L1 is formed by 80 turns of wire 28 in a ferrite rod to tune medium waves range. The circuit can...
This circuit was found in a 1969’s American documentation. It shows how to use two transistors to form...