chevymn1964
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Hey Everyone, I found a Schematic on the web for a 0-20AMP Adjustable "DUMMY" Load... I made the circuit exactly to the schematic and when I test I can only get about 0-3.75 amps max? when I try to boost the reference voltage I can get more current draw but then its not constant current... Im not too experienced with op-amps so I was wondering if anyone can check it out and give me some hints? I think that pis 8 should goto pin 2 and reference the reference voltage comparitor to the current feedback?? the project can be found at: http://www-d0.fnal.gov/hardware/cal/lvps_info/curr_load/