Inverter poor AC voltage regulation

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phil99 Guru Joined: 11/02/2018 Location: Australia Posts: 3148	Posted: 03:41am 06 Nov 2024         Quote   for a 48V inverter:... output winding with 235V AC I measure 26V AC at the input winding = 9:1   Godoh said   Mine are all 24 volt.... 13 volts Primary and 240 volt secondary. = 18.46:1 So that appears to match ok. Perhaps the PWM is constant, not responding to feedback at all. Can you check with a scope? Un-plug the feedback op-amp and feed a voltage into TP5. Start at 3V and slowly decrease to 2.5V. AC output voltage should rise. Edited 2024-11-06 13:53 by phil99