Re: CShelp with diode

2013-09-02 Thread Marshall
I believe that should be 1 mA per square inch, not cm. There are about 6.5 square cm to a square inch. Marshall On 8/31/2013 10:09 PM, Joe Huard wrote: I have been advised by many on this group to keep the current down to 1mA per square centimeter, in order to have nano particle size. Joe

Re: CShelp with diode

2013-09-02 Thread Marshall
I answered it earlier. 1.7 is great, 5 would be ok, but I would not go over 5. After all, lower is better since that defines at what voltage the diode actually starts working. Marshall On 9/1/2013 4:27 PM, Joe Huard wrote: Yes; you're right! Thanks for the correction. Still, no one

Re: CShelp with diode

2013-09-01 Thread asif nathekar
Subject: Re: CShelp with diode square centimeter of what? the surface of the electrode in contact with water? I think that this is too much complicated. I have been using CS for almost 20 years now, and I would say that it is sufficient to use very pure water. When you use your apparatus you

Re: CShelp with diode

2013-09-01 Thread Joe Huard
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.

RE: CShelp with diode

2013-09-01 Thread Steve
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: CShelp

Re: CShelp with diode

2013-09-01 Thread asif nathekar
To: silver-list@eskimo.com Subject: Re: CShelp 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

RE: CShelp with diode

2013-09-01 Thread Steve
don't see the need to add temperature compensation. Steve _ From: silver-list-requ...@eskimo.com [mailto:silver-list-requ...@eskimo.com] On Behalf Of asif nathekar Sent: Sunday, September 01, 2013 4:46 PM To: silver-list@eskimo.com Subject: Re: CShelp with diode Please consider

Re: CShelp with diode

2013-08-31 Thread Marshall
That is the maximum voltage drop that is necessary to go into current limiting mode. Any lower drop across the diode and it will act more like a resistor than a current source. At 30 volts, anything under around 5 Volts should be fine for that. Marshall On 8/31/2013 7:22 PM, Joe Huard

Re: CShelp with diode

2013-08-31 Thread Joe Huard
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-Rectifiers/Current-Regulator-Diodes/_/N-ax1ml?P=1yzrlz3Z1z0rzzo Do I need to get at least 5 Volts? Joe H. On 31/08/2013 7:38 PM,

Re: CShelp with diode

2013-08-31 Thread yousouf eydatoula
With 30 V dc use a 30K resistor. V=IR where V=voltage I=current. To be accurate you have to consider also the resistance of the water between the electrodes which varies with the conductivity and the distance between the electrodes. May I ask why you need to be so accurate?

Re: CShelp with diode

2013-08-31 Thread Joe Huard
I have been advised by many on this group to keep the current down to 1mA per square centimeter, in order to have nano particle size. Joe On 31/08/2013 10:03 PM, yousouf eydatoula wrote: With 30 V dc use a 30K resistor. V=IR where V=voltage I=current. To be accurate you have to consider also

Re: CShelp with diode

2013-08-31 Thread yousouf eydatoula
PM Subject: Re: CShelp with diode I have been advised by many on this group to keep the current down to 1mA per square centimeter, in order to have nano particle size. Joe On 31/08/2013 10:03 PM, yousouf eydatoula wrote: With 30 V dc use a 30K resistor. V=IR where V=voltage I=current