Help With A Schematic
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Help With A Schematic

 
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william_gallagher@comcast
Guest
Posted: Wed Nov 16, 2005 9:35 am    Post subject: Help With A Schematic Reply with quote
I've just completed this device and it does what it's supposed
to(distort a guitars output signal) but has no gain... Can anyone help
me try and get more gain out of this pig? Perhaps change some of the
devices values...add pots? Who knows I don't... see this hyperlink to
view the schematic ( http://www.diystompboxes.com/pedals/orange.jpg )


Thanks


Bill

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Guest
Posted: Wed Nov 16, 2005 9:35 am    Post subject: Re: Help With A Schematic Reply with quote
Have you considered replacing the 470 Ohm and 4.7 K resistors on the
output with a 5 or 6-K pot? That should give you plenty of adjustable
gain considering that the ciruit is just a simple peak limiter.

Harry C.
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Guest
Posted: Wed Nov 16, 2005 9:35 am    Post subject: Re: Help With A Schematic Reply with quote
As a afterthought, you could also increase the 22K resistor to
decrease the amount of negative feedback in the circuit. Try replacing
it with a 100K pot and see what happens as you vary the setting.

Harry C.

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Ian Bell
Guest
Posted: Wed Nov 16, 2005 5:35 pm    Post subject: Re: Help With A Schematic Reply with quote
hhc314@yahoo.com wrote:

Quote:
As a afterthought, you could also increase the 22K resistor to
decrease the amount of negative feedback in the circuit.

The 22K resistor is primarily dc feedback as the emitter it is driven from
is decoupled by a capacitor.

Quote:
Try replacing
it with a 100K pot and see what happens as you vary the setting.


Increasing it would be a good idea I agree because it will raise the imput
impedance.

Ian
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