efelnavarro09
New Member
Hello everbody, I'm working on a T. E. N. S. machine that generates different waveforms, all coming from a CPLD. Well my question is How do I make a variable current source from 0 up to 150mA controlled by voltage (3.3V) that will be connected to the electrodes. Also I will appreciate if anyone can explain to me what does "through 500ohm resistance" means in commercial TENS machines? Thanks in advance.