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12VDC power supply
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Old 30th May 2012, 05:51 AM   #11
jitter is offline jitter  Netherlands
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Join Date: Aug 2004
Location: Eindhoven, The Netherlands
Originally Posted by manner View Post
Dear All,
I need at least 2A.
I measured the DC voltage directly at the output terminal without any load.
The input voltage was 220V at that time-stepped down to 15V via a toriodal transformer.
There is already a voltage regulator circuit in situ but the DC voltage was 19V instead of 12V. Is there any simple way to step down the voltage without rebuilding the whole circuit? Can I add resistors across the output terminals to bring down the voltage?
What kind of voltage regulator is in now?
Does it need a minimum load to function properly?
If so, what happens to the voltage when you apply that minimum load?
If that does the trick, the question to you last answer should be "yes", provided you use resistors that can deal with the power they're dissipating.
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