Subject:
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Re: Expansion Board problems (Kinda OT)
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 31 May 2000 03:04:50 GMT
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Viewed:
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1170 times
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>
> Good luck, and be sure to wear some kind of eye shield for
> when a cap pops!
I was trying to build a 110V AC -> 24V DC power supply
from Radio Shack parts once... It was late at night and I
was tired. I only had a 12v transformer, so I pulled out
an electronics book and build a voltage doubler on the
output side of the 12v transformer. Well I was stupid and
put on 16 volt caps... I turned it on, and crawled in front
of it around to use my voltmeter on the output, it showed
25.2 volts (actual 12.6 volt transformer - to be expected)
and I was real happy until both caps on my voltage doubler
board simultaneously exploded where I had been 5 seconds
earlier and practically shrapeneled me with capacitor pieces.
I was NOT happy...
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Message is in Reply To:
 | | Re: Expansion Board problems
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| You have a short circuit somewhere. The first thing to check is to make sure you have the capacitors in the right way. Some of them are polarized, and if you put them in backwards, they sometimes short out, and sometimes they blow up. The next thing (...) (25 years ago, 10-Mar-00, to lugnet.robotics.handyboard)
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