One circuit card assembly mtd back to back with a control logic assembly on a page frame both secured by two captive nuts, c/o capacitor 21, connector 2, diode 9, inductor 3, microcircuit 30, resistor 67, transistor 9, 7.980 in. O/a lg, 3.192 in. O/a w, 0.362 in. O/a h