Current amplifier module thingy.

[itsmoked]

I have a deice that puts out 0-10V that I have to feed into many other devices to control their outputs. Each one draws about 10mA. My source is good for about 30mA. I essentially want to buffer this output for about 200mA+.

Sure I can make a buffered voltage follower by tagging a transistor on the back of an op-amp to up the current, and yes, I could use an off-the-self power op-amp to build a current booster, but I'd rather just buy a puck of some sort that has either flying leads or screws.

Any suggestions?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[IRstuff]

Not sure if this is what you're looking for:

http://www.national.com/an/AN/AN-227.pdf#page=1&search="LH0033"

but I've used these in the past for buffering IC probes, literally poking sharp sticks at the innards of a digital chip. If you can wrap the feedback loop around the output of these chips, the slight gain error would be eliminated.

TTFN

FAQ731-376