From: Jim Thompson
Newsgroups: sci.electronics.design
Subject: Re: Voltage Controlled Resistor?
Message-ID:
References: <4ba339123ftonyw@ledelec.demon.co.uk> <3pnevu0ca1sbf4bbp5uulisg7s5as2a94r@4ax.com> <3df7705c$0$2137$626a54ce@news.free.fr>
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Date: Wed, 11 Dec 2002 17:13:58 GMT
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On Wed, 11 Dec 2002 18:04:24 +0100,
"fred bartoli" ,
In Newsgroup: sci.electronics.design,
Article: <3df7705c$0$2137$626a54ce@news.free.fr>,
Entitled: "Re: Voltage Controlled Resistor?",
Wrote the following:
|
|Jim Thompson a écrit dans le message :
|3pnevu0ca1sbf4bbp5uulisg7s5as2a94r@4ax.com...
|> On Wed, 11 Dec 2002 15:35:36 +0000 (GMT),
|> Tony Williams ,
|> In Newsgroup: sci.electronics.design,
|> Article: <4ba339123ftonyw@ledelec.demon.co.uk>,
|> Entitled: "Voltage Controlled Resistor?",
|> Wrote the following:
|>
|> | What's a good way of doing a precision VCR?
|> | I thought it was easy, but have been doodling
|> | on paper for half a day now. I could have
|> | sworn it could be done without a multiplier.
|> | Must be going senile.........
|> |
|> | The spec; Vcontrol= 0-10V, Rout= 0-1k, over
|> | the range 0-10v or 0-10mA. 15-0-15 available.
|>
|> I addressed this recently on A.B.S.E at...
|>
|> Message ID: <09vptu06ojl912jegdin71kg39c94l070n@4ax.com>
|>
|> (I think this is the correct ID... it's at least part of the thread.)
|>
|> There's also a Voltage Variable Resistor part for PSpice on my
|> website.
|
|
|
|That kind of resistor made in POLY ???
|
|Fred.
|
|
|>
|> ...Jim Thompson
Fred, I'll presume you're not already into the Christmas cheer and
assume you mean POLYnomial and not POLYsilicon ;-)
You can do it with a polynomial, but PSpice has had, for several
years, the EVALUE and GVALUE parts, thus you can avoid the gruesome
polynomial notation.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| Jim-T@analog_innovations.com Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
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