Joe,
Either diode will work fine. Or, you can use a LM334Z constant current regulator. The LM334 is much cheaper and more plentiful, and only requires a single resistor to set the current. I buy mine from Jameco (www.jameco.com <http://www.jameco.com/> ), part number 23739. Download the data sheet (free) to see how it works. A 75 ohm resistor will give you about 1 mA. Steve Y. _____ From: silver-list-requ...@eskimo.com [mailto:silver-list-requ...@eskimo.com] On Behalf Of Joe Huard Sent: Sunday, September 01, 2013 2:27 PM To: silver-list@eskimo.com Subject: Re: CS>help with diode Yes; you're right! Thanks for the correction. Still, no one answered my question. Is a Maximum Limiting Voltage of 1.7 V good enough, or do I need to search for a diode that goes to 5 volts? There are only 2 current limiting diodes at 1mA, and the Max. Limiting Voltage is only 1.7 V. http://ca.mouser.com/Semiconductors/Discrete-Semiconductors/Diodes-Rectifier s/Current-Regulator-Diodes/_/N-ax1ml?P=1yzrlz3Z1z0rzzo Do I need to get at least 5 Volts? Joe On 01/09/2013 3:35 PM, asif nathekar wrote: Im sure it was 1ma per square INCH I actually use 0.2/0.1 ma per square inch for much better and easier results.... It takes longer but its worth it... High likelihood of having Higher Ionic content.
