AC constant current source FREE cabling and networking Helpdesk
 Question by M. Eid posted 20 Mar 2006
 AC constant current source
I am trying to design an AC constant current source (1 mA p-p output) but facing many difficulties. I tried to build it as if it were a DC current source using instrumentation amplifiers(INA121P and OPA277P) (it worked perfectly for DC). As soon as I switch to an AC input voltage the circuit stops behaving as a constant current source. Is there a way I can get my AC current source?
 Answer by Joseph Golan posted 21 Mar 2006
Dear M.,

I'm sorry but your question is outside the scope of this help desk. This help desk's goal is to assist people with communication cabling issues.

I found a number of power supply forums by doing an Internet search (I use Yahoo) and type in "Power Supply Forum". I think these groups would be better in answering your question.

Joseph Golan, RCDD

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