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short of boosting the DC-link.. noIs there a way of getting 240vac constant output because the pump stops if the voltage drops below 230vac
Hero999 said:Now the only problem is delivering 20V to the gates on top of the 325V.
Hero999 said:I would use pulse transformers to do this as they can do this and isolate the high voltage side from the low voltage side.
Styx said:I would be tempted to go for 500V FET's but that is just me
johnl69 said:Thanks for the diagnosis heres a new schematic
Its lacking some finite details but concept-wise it is virtually thereHero999 said:That still looks wrong to me.
At a guess it would be a series gate-resistor to control the charging of the FET and a terminating resistor to pull the gate down to its sourceHero999 said:What's the purpose of the potential dividers and capacitors on the MOSFETs' gates?
Yes, but he is gonna have to check the VA rating and all that jaz\Hero999 said:What's T2? Is it an isolation transformer? If so good idea, well done!
THAT is definitly needed, no questions asked at allHero999 said:There's no filter capacitor on the 240V rectifier.
Hero999 said:the gate drive outputs to the gates (a 10hm: resistor or ferrite bead might be required here) and the LEDs to the PIC's outputs.