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.
We found this circuit in a 2005 Linear Technology manual. Observe the component values and...
Suggested by General Electric in a 1965 document, this circuit can accept a greater number of...
This circuit was obtained in a1969 magazine. The magazine no longer exists, but the circuit can be...