 
	For an electrode with a 2 cm2 area in solution, the variable resistance in the circuit is adjusted to maintain an 80 µA current during deposition for a specified number of seconds.

  
Parts list from http://www.mouser.com
  Battery Holder, Mouser 534-139
  50 k-ohm 10 turn potentiometer, Mouser 594-53411-503
  Banana Jacks, Mouser 530-108-0907-1
  Aligator Clips, Mouser 548-30-BL
  ON-OFF-ON through hole Toggle Switch, Mouser 633-M201303
This version incorporates and on/off switch.
  