Hi everyone and Peaceful NEW YEAR!!!I look again the original schematic and I think that we have switching circuit parallel to L2 and current trough D5 and D4 can make trouble.
Q2 is a PNP transistor and I connect +5V to pin 3 (emitter) and (collector) pin2- to pin1 of 4N25 . Is this wrong? about Q1 (IXFQ50N60P3) Gate is pin1 ,Drain is pin2 and source is pin3 - Is this is correct connection?
Original schematic R6 =220K see the attached new schematic (R10) I do not see what is the function,