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Anonymous Poster

halfwave rectifier..

07/19/2008 9:52 AM

in half wave rectifier when it is made using diodes the positive part of the signal only got as a output..but when it is made with the opamp the negative part is got as the output..why is it so..is that also a halfwave rectifier as it output,s only half of the signal..
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Bolton_Alan
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#1

Re: halfwave rectifier..

07/19/2008 11:50 AM

Your opamp is inverting the output of your rectifier. Easiest fix would be to turn your diode round if a positive output is what you want.

Al

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rcapper
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Join Date: Dec 2005
Location: Etats Unis
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#2

Re: halfwave rectifier..

07/20/2008 3:51 AM

google precision rectifier

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HoleInTheSnow
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Join Date: May 2008
Location: Europe
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#3

Re: halfwave rectifier..

07/20/2008 6:18 AM

Dear Guest,

Not sure if this will help or not but here it is anyway.

http://www.wisc-online.com/objects/index_tj.asp?objID=SSE402

Kind Regards

Mr. W.A. Snow
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Andy Germany
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#4

Re: halfwave rectifier..

07/20/2008 10:06 AM

If you want only half wave rectification, you have answers enough, but did you really want full wave rectification?

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jack of all trades
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#5

Re: halfwave rectifier..

07/20/2008 3:27 PM

Sounds like your op-amp is set up as an inverting amplifier (hence the negative voltage when you connect your half wave rectifier up to it).

Try looking at Wikipedia or google for basic op-amp circuit principles.

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feridun
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Join Date: Jun 2008
Location: TR
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#6

Re: halfwave rectifier..

07/20/2008 11:53 PM

I think you needs knowledge about opamps more. Simply search "operational amplifiers" and learn more than you imagine.
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Andy Germany (1); Bolton_Alan (1); feridun (1); HoleInTheSnow (1); jack of all trades (1); rcapper (1)

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