Subject:
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Re: ** voltage dropping and current limitting**
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 30 Jan 1999 23:29:11 GMT
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Original-From:
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SHETTI.NITIN.MANGESH <shettin@giasbmc.IHATESPAMvsnl.net.in>
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Viewed:
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860 times
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Dear Mike,
I believe the 16 V is rms value. If you attach a capacitor
across the bridge rectifier under no load condition(output terminals are
open), the capacitor gets charged not to 16 V rms but to the maximum value
ie Vm=16*2^0.5 which is about 22 V.This could be the problem.
Yours sincerely,
Nitin
On Fri, 29 Jan 1999 BMajik5127@aol.com wrote:
>
> I have a transformer, when powered by 110 vac I get 16 vac out.
> I put it through a bridge rectifier and the problem is when I put a cap say
> 20v 1000uf
> across the + - of the rectifier, the voltage jumps to about 20 vdc.
> If I omit the cap and attach a small dc motor I get the same effect. WHY???
> Any info would be much appreciated.
> -Mike
>
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