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Anonymous Poster

need help

02/03/2010 11:19 PM

hey there...i need to build a current injector with voltage in is 24V...the output current is 4mA,8mA,12mA and 16mA...how can i build it..can anyone give the appropriate circuit..please...thanks a lot....
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: need help

02/04/2010 2:52 AM

Why build when they can be purchased?

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Anonymous Poster
#2

Re: need help

02/05/2010 5:00 AM

1. You forgot 20mA (4-20mA, standard process signal)

2. You need to learn about resistors and Kirchoffs law, look it up

3. Over 1,000 manufacturers worldwide sell such devices OTS

4. Yes, you do need help. More help, I fear, than can be provided on this forum.
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Anonymous Poster
#3

Re: need help

02/07/2010 10:01 PM

thanks for the comments..i knew that this device is already in market..but my boss want me to build it..for this time,i need an appropriate circuit...please..thanks..
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