A simple way to convert 0-20ma into 0-10volt

The HC11 is a beautiful processor - it's just too bad they're so damn expensive!

Thanks, Rich

Could that be because they are really ancient and EOL'd?

--
 JosephKK
 Gegen dummheit kampfen die Gotter Selbst, vergebens.  
  --Schiller

Linnix,

I believe that John was merely pointing out in a nice, polite way that your posts are flawed with very basic misconceptions - not just a matter of small adjustments or component values. You should re-read John's posts in that light, and/or consult a tutorial on opamp circuit design. For this application, an inverting topology is wrong, and the rest just makes it wronger. If you really want to use an opamp (eg if a low-Z output is needed), and in the absence of any other information, a more logical way to do it is as a simple buffer, eg

+----------+ | \\ | | |\\ | +---|-\\ | | +---+--OUT IN--+---|+/ 500 |/ | / GND

T>John Woodgate wrote:

Tony (remove the "_" to reply by email)

You need only R2. Usually 0-20mA range is moved to 4-20mA or 2-10mA just to avoid line broke problems when the current is 0 not because of the signal but becouse of a circuit malfunction.

Vasile

[snip]

4-20mA also has the advantage that you have up to 4mA available to power remote signal processing.

--
T

If it\'s not broken, don\'t fix it.