This circuit for automotive use was found in American documentation from the 90s. The circuit uses common components today. The relay is 12 V.
In the figure we have the way to control a triac with a low current and low voltage switch,...
This trigger circuit was found in old European documentation, but it can be implemented with...
May 2017 - The new ROHM SFR series anti-sulfur resistors can now be obtained from Mouser...