INTRODUCTION The PATFC is a thick-film hybrid firing circuit, which gives phase control and is therefore useful as a simple proportional control firing circuit for driving an appropriate triac power device to suit most load applications.

APPLICATIONS Virtually all resistance heaters including ovens, electric furnaces, moulders, dryers, smelters, heating tapes, stress relieving, space heating and heating mantles. This is unsuitable for use on inductive loads.


  • Compact thick film technology • Simple triggering device • Requires additional:
  • Potentiometer
  • Triac power device
  • Heatsink (for use with triac)