Power Inverter No Load (Idle or Standby) Current? Answered
Hi Instructables members',
Recently build power inverter have a no load current vary 0.4 to some 4.0 amps (up and down or not stable) which causing the AC ouput also vary 230VAC ~ 235VAC.
My existing purchased inverter when switch on the no load current stay high. Some where 3 to 4 amps with the FET on power stage remove.
Do anyone experience this? Where shall I begin troubleshoot.
P/S: For Case 2 - earlier when switch on blown fuse. After change pre-boost FET, it no load current stay high.
Thank you for those valuable reply. Finally I found the problem.
Remove the fan and ad 100uF to ground at pre boost stage.
Replace an open transistor at pre boost board that driving the push pull fet.