I'm using a 'standard' Maida for a B- (-300VDC) supply, just connected the positive output to ground and used ground as the negative supply. It works perfectly.
I also have some bipolar maida PCBs in my spares stash, purchased from a chap on Swap Meet - I can spare one or two if of interest?
So that's the same as Jan's with two isolated secondaries and two fb rect bridges. I was under the impression that running a -320 to 320 causes issues with the transformers loading etc.
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That works with the 21st Century Maida Regulator as well. As long as you have two separate secondaries - one for the positive supply and another for the negative supply - it'll work just fine.
Tom
Yes, essentially the bipolar units are two seperate maida regulators so each has its own transformer or secondary.
Don't forget to account for the load current in that case. I'd probably make R3 = 100 Ω. That'll set the current limit to about 35 mA, which would be plenty.
1 W resistors would be plenty.
A use case where hardly any current would be drawn from the regulator did not occur to me when I wrote the spreadsheet, so I didn't account for that. You'll always have at least 2 mA flowing through R3 due to the feedback resistors, so it really should be no higher than 1.6 kΩ.
Tom
1 W resistors would be plenty.
A use case where hardly any current would be drawn from the regulator did not occur to me when I wrote the spreadsheet, so I didn't account for that. You'll always have at least 2 mA flowing through R3 due to the feedback resistors, so it really should be no higher than 1.6 kΩ.
Tom
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I doubt it. There is a schematic in Post #1, though.
I've made a few tweaks since then, but it should provide a starting point for you if you'd like to DIY the circuit.
Tom
It's ok, thanks, jackinnj sent simulation file, I need it only for comparation, I'm experimenting with another "maida type" topology... Btw I'm used to Micro Cap, LT spice is still not user friendly after all these years.
