This circuit is from an1966 General Electric documentation. The Triac can be equivalent to 6 A or more, mounted on a good heatsink. Any diac can be used.
This was the original title given by the publication of the 80s in which we found it. Similar...
This general-purpose transistor amplifier stage was found in the November 1993 issue of...
This circuit was found in an Electronic Design from 1968. Its purpose is to produce synchronized trigger...