Not real sure where to post this…
My PSU ended up being -12/+11.74. I took the other 2 leads out of this transformer (It has 7) and built a
-15/+14.74. I used the method described in the Bi-polar PSU Wiki with the Voltage Doubler.
First, Is this something to worry about? I’m guessing for a Bi-polar supply you want both sides equal.
If it is, What can I do? Should I slip a resistor into the high side and bring them both down to XX.74?
First of all, which circuit on the linked article did you build?
I just built a voltage doubler too, from the handdrawn schem here
Mine was also a little bit off, but it seems that when it’s under load it behaves just as expected - i use mine for MBFM
Tried to clear the schem up a bit (built to run MBFM from C64 PSU)
If you had a look at the datasheet of either the 7812/7815, you would have seen that it’s well within the specified limits.
JRock doesn’t do datasheets. :flowers:
Not if I can avoid it 
They’re like goddamn stereo instructions!
Strike that. I like reading stereo instructions :laugh: {(That’s me laughing @ my own joke)
It didn’t even occur to me.
I didn’t think it might be the regulators… I was figgering Human Error if anything.
So I can continue to feel proud of myself for building this PSU :cheer:
Honestly I don’t even know where I got the transformer from. I think i found a stereo for free on the roadside.
Should’ve read the manual.
It has Seven leads. I managed to get +/-12V and +/-15V out of it. I thought I was gonna be able to get 5V too but after I hooked the other Johnsons up I was only getting 2.5V from the remaining leads. I don’t know what the amperage is cause the fuse in my Multimeter kept blowing out when I tried to test it. I went through 4 of them.
Let’s see what it does under load. I rent so fire’s not a huge concern
That’s nice Flemming! I couldn’t understand why my 1N9148s kept blowing up, then I googled bi-polar PSU and saw they were supposed to be 1N4004s (or 7s) I robbed some 4002s off that stereo PCB and they seem to be working alright.
