10-30-2008 05:05 AM
10-30-2008 09:20 AM
10-30-2008 09:41 AM
Imagine the leakage through the input capacitor as the equivalent of a very large value resistor... it is pulling "up" on the input The pulldown resistor is going to ground and this makes a voltage divider at the input... the smaller the pulldown resistor, the smaller the idle voltage that is present on the input because of the divider...
10M will have a much larger residual voltage than 1M but even so, if the value of the capacitor leakage is low enough, you won't notice a difference. If the cap is really leaky, you will notice a difference in the pop and may have to select a lower value pulldown.
More info: http://www.muzique.com/news/pulldown-resistors/
10-30-2008 01:32 PM
Lastly, when I search 'pulldown resistors' I get a LOT of hits for 'pull-up' resistors. I understand the difference (barely), but why do we pedal builders seem to only use Pulldowns?
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