The diodes are for general use and the transistors also in this Exclusive-OR circuit. The circuit may have the values of the resistors changed to 5 V logic.
This circuit uses components that are no longer easily found. The circuit is from a 1988...
Suitable for battery powered microcontrolled applications this Texas Instruments circuit from its...
June 2016 - It can be purchased from Mouser Electronics the new triacs Z04 for 4 A from...