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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > High Voltage Protection
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SANEMB
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« on: July 15, 2010, 05:29:07 17:29 »
Hi all,

I want to have High voltage protection ( 285V ~ 300 V AC ) for my design . Can anyone help me .
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Old_but_Alive
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« Reply #1 on: July 15, 2010, 06:12:57 18:12 »
your question is too vague for anyone to comment.

give more details.
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I only use Mosfets because I have a Bipolar mental disorder :-)
SANEMB
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« Reply #2 on: July 15, 2010, 07:03:57 19:03 »

Could be ...... Grin

 just need some protection ckt for the input high voltage.  or some over voltage cut off.
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TomJackson69
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« Reply #3 on: July 15, 2010, 09:38:27 21:38 »
What that input voltage connects to? Transformer? A to D converter? As a power for your digital circuit?

More specific detail than someone may help you.

Tom
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Parmin
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« Reply #4 on: July 16, 2010, 12:23:09 00:23 »
use opto-isolator
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oldboy
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« Reply #5 on: September 27, 2010, 04:57:23 04:57 »
As other folks have already mentioned, more details would get you more precise information.
Answers could range from the use of circuit breakers / fuses at the input, to optoisolators to separate the low voltage and high voltage sections.

(if this were a tongue in cheek question), wearing rubber soled shoes would help.
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vovchik02
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« Reply #6 on: September 27, 2010, 06:03:05 06:03 »
Use supressor and fuses for overvoltag and overcurent protection.
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pushycat
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« Reply #7 on: September 27, 2010, 09:35:08 09:35 »
Quote from: SANEMB on July 15, 2010, 05:29:07 17:29
Hi all, I want to have High voltage protection ( 285V ~ 300 V AC ) for my design . Can anyone help me
Guess you were looking for circuits, similar to stabiliser protections using relays for Hi and low volatge cut off's . If yes, Googling gave me these results
http://www.circuitstoday.com/high-low-voltage-cut-off-with-delay-alarm
http://www.electronic-circuits-diagrams.com/psimages/powersuppliesckt4.shtml
http://www.brighthub.com/engineering/electrical/articles/68396.aspx
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