Subject:
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Re: voltage regulator
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 5 Aug 1998 21:19:18 GMT
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Original-From:
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Fred G. Martin <fredm@media.mit.eduSPAMCAKE>
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Viewed:
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251 times
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there is probably some other circuit on your board that is drawing too
much power. put your finger on the other chips and see if any of them
is hot (there shouldn't be any). if necessary, remove all socketed
chips to see if you can get the vregulator to cool down -- you may
have a failed chip that's drawing the power.
fred
In your message you said:
> The voltage regulator on my board (U13) gets so hot that when i touched it it
> burned my finger. I am using the recomended 12V 500ma ac adaptor. I have been
> having problems testing the motor circutry and the red motor lights light up
> when i turn the board on. However the board voltage is correct (5.00V). This • is
> the second voltage regulator i am using because the otherone was giving a boa • rd
> voltage of 5.13V. I suspect the malfunction was due to the heat it generated.
> The orientation is correct. Why is this happening?
> sam
>
>
>
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Message is in Reply To:
 | | voltage regulator
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| The voltage regulator on my board (U13) gets so hot that when i touched it it burned my finger. I am using the recomended 12V 500ma ac adaptor. I have been having problems testing the motor circutry and the red motor lights light up when i turn the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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