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Old 14th July 2013, 01:46 PM   #1
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Default Symmetrical power supply with two identical sources

Hi everyone!

I plan to make a regulated power supply with two symmetric positive sources but I'm not sure my idea.
To explain a little, there would be a plate with a small adjustable control transformer and power sources with another transformer, filtering, etc ...
I made a pattern but there must be problem I think.

Regards!
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Old 14th July 2013, 08:30 PM   #2
DF96 is offline DF96  England
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What you have called 'power cap' is actually a reservoir cap. The bottom part of the circuit needs one too to drive the regulator.
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Old 14th July 2013, 08:38 PM   #3
DUG is offline DUG  Canada
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The two top ground symbols should not be connected to the bottom two ground symbols.

And what DF96 said.

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Old 14th July 2013, 09:14 PM   #4
benb is offline benb  United States
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And one more thing, you can't tie the bases of those transistors together like that and expect it to work.

You've got the idea of making a + and - regulated tracking output supply, but as you surmised by saying "there must be a problem," you're not quite doing it right.
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Old 14th July 2013, 09:22 PM   #5
DUG is offline DUG  Canada
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Quote:
Originally Posted by benb View Post
And one more thing, you can't tie the bases of those transistors together like that and expect it to work.

...
oops, missed that
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