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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: tension to current converter: help
Date: Fri, 06 Sep 2002 00:54:06 GMT
NNTP-Posting-Date: Thu, 05 Sep 2002 17:54:06 PDT
> The signal from a sinusoid generator (10-100 KHz) must to go
> into a tension to current converter with this specifications:
> -max out 5mA
> -load range 100 ohm to 3Kohm
> Any idea about the design of this converter ?
By tension, I suppose you mean voltage? If so, what is the voltage range
(need an idea of the required transconductance)? Do you need this single
ended or ground referenced? Can the current be driven with an "H" driver
or do you need to sink to ground? Is the 5ma peak or RMS? This is not
very hard but how the current is to be used will decide the best circuit
configuration. If you need 5ma peak to peak into a 3Kohm resitor which
is grounded at one end, +-15 volt supply gives no headroom so a higher
supply is needed. Current sensing in the ground return is easiest but it
is possible to sense the current on either side of the load. Also an "H"
configuration allows the use of a single 20 volt supply for 5ma into
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org
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