Does Ci( input capacitor(polyprop)) acts like a clipping protector? or

rhythmdiy · 1st November 2007, 06:09 PM

I want input clipping protection system. But I doubt as the input capacitor acts like clipping protector as it will not allow DC into the circuit....but does it work? or do i need to have a circuit for it? please guide me...

thanks,
Ken

Jeb-D. · 1st November 2007, 06:40 PM

No, sorry a cap won't do the job. You need a circuit. I know of a simple one if you have +/- voltages available , but I won't be able to post it till later.

Nordic · 1st November 2007, 06:50 PM

another way is to set your input sensitivity to about 600mV an use a diode over the input to limit the input voltage.

Nico Ras · 1st November 2007, 09:30 PM

A diode will create clipping becase it will chop off the tops and square it resulting in severe distortion.

Using a diodes to clip or limit the siganl in FMamplifiers is more apropriate because you need frequency information and amplitude information is not important so noise is clipped.

I_Forgot · 2nd November 2007, 04:32 AM

If you're worried about a DC offset at the input of the amp propagating to the output, a capacitor will do the job (assuming the DC is coming from the source, not the amp).

If you're worried about clipping in the more conventional sense- i.e. the amp slamming to one rail or the other due or both due to an input overload, you probably don't want to use diodes. Diodes will clip the signal and cause the same sort of distortion you're trying to avoid.

Try this page:
http://sound.westhost.com/project67.htm
or this:
http://graffiti.virgin.net/ljmayes.mal/comp/comp.htm

I_F

1st November 2007, 06:09 PM	#1
rhythmdiy diyAudio Member Join Date: Dec 2006	Does Ci( input capacitor(polyprop)) acts like a clipping protector? or I want input clipping protection system. But I doubt as the input capacitor acts like clipping protector as it will not allow DC into the circuit....but does it work? or do i need to have a circuit for it? please guide me... thanks, Ken

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1st November 2007, 06:40 PM	#2
Jeb-D. diyAudio Member Join Date: Nov 2005 Location: SoCal	No, sorry a cap won't do the job. You need a circuit. I know of a simple one if you have +/- voltages available , but I won't be able to post it till later.

1st November 2007, 06:50 PM	#3
Nordic diyAudio Member Join Date: Sep 2005	another way is to set your input sensitivity to about 600mV an use a diode over the input to limit the input voltage.

1st November 2007, 09:30 PM	#4
Nico Ras diyAudio Member Join Date: Nov 2005 Location: Amanzimtoti - East Coast of South Africa	A diode will create clipping becase it will chop off the tops and square it resulting in severe distortion. Using a diodes to clip or limit the siganl in FMamplifiers is more apropriate because you need frequency information and amplitude information is not important so noise is clipped.

2nd November 2007, 04:32 AM	#5
I_Forgot diyAudio Member Join Date: Jan 2005 Location: Phoenix, Az.	If you're worried about a DC offset at the input of the amp propagating to the output, a capacitor will do the job (assuming the DC is coming from the source, not the amp). If you're worried about clipping in the more conventional sense- i.e. the amp slamming to one rail or the other due or both due to an input overload, you probably don't want to use diodes. Diodes will clip the signal and cause the same sort of distortion you're trying to avoid. Try this page: http://sound.westhost.com/project67.htm or this: http://graffiti.virgin.net/ljmayes.mal/comp/comp.htm I_F

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