Regulate current between two cables?


hello!

i doing project , got dead-end. ma trying regulate current passes between 2 cables, independent arduino. tried put both ends in transistor, being source of energy on collector , emitter on other cable. in base, put cable connected 1k-ohm resistor , arduino uno, on 5 five (pwm). whenever try run it, looks energy not pass through transistor.

any idea of can wrong?

thank you!

sorry, don't understand goal...    you're tying regulate 2 currents through 2 cables?    regulate what?   how many amps or milliamps?   what's load?   are trying control/regulate current (amps) or voltage? 

you independent arduino, controlled arduino's pwm.    assume mean current/power doesn't come arduino?

it nice see schematic too, although need understand want circuit before can know why it's not working way expect to.


i don't know if @ all, here example of transistor driving solenoid power (current & voltage) separate (but not electrically isolated) arduino.   if driving non-inductive load can leave out diode.


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