Re: voltage controlled resistor
- From: Franc Zabkar <fzabkar@xxxxxxxxxxxxxxxxx>
- Date: Thu, 17 May 2007 15:40:38 +1000
On 16 May 2007 10:43:47 -0700, cary.niza@xxxxxxxxx put finger to
keyboard and composed:
Does anyone know of an IC chip or discrete component intended to be
used as a variable resistor whose resistance value may be controlled
by varying its voltage input/signal
About 20 years ago I encountered a device consisting of a light source
(LED ?) and a light dependent resistor. IIRC the part came in a
package that was not much bigger than a TO92 transistor. I think
similar schemes are used to provide noiseless volume controls for
musical instruments, eg the expression pedals for pianos and organs.
- Franc Zabkar
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