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Diabolical Artificer · 31st Jul 2020, 10:54 am

I've wired the TL431 as indicated, it works, ta Dave.

I've been thinking how I can drop around 100v so I don't need such high V rated components and came up with this, see attached. It's a potential divider to fix the fets gate at whatever V, so a simple regulator, I'd use this to drop about 80 -100v then connect Dave's regulator circuit to the OP. So far on the bench it works though the R value's may need tweaking. Think of it as a pre regulator regulator.

Can anyone see a better way or poke holes in my circuit please? Andy.

31st Jul 2020, 10:54 am	#82
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,658	Re: High voltage regulator circuit. I've wired the TL431 as indicated, it works, ta Dave. I've been thinking how I can drop around 100v so I don't need such high V rated components and came up with this, see attached. It's a potential divider to fix the fets gate at whatever V, so a simple regulator, I'd use this to drop about 80 -100v then connect Dave's regulator circuit to the OP. So far on the bench it works though the R value's may need tweaking. Think of it as a pre regulator regulator. Can anyone see a better way or poke holes in my circuit please? Andy. Attached Thumbnails __________________ Curiosity hasn't killed this cat...so far.