Hi Matthew, I suspect that you have discovered a pretty good random number generator. You have set up a classic 50% source and 50% load impedance system and the minute changes in the surface area of the electrodes will be changing as the anions and cations are formed, causing variations in the impedance of the cell, thus the current. The use of true current regulation rather than simply limiting current with a resistor should effectively eliminate this effect to a degree depending on the gain/bandwidth of the circuit.
Best regards, Arnold Beland www.atlasnova.com ----- Original Message ----- From: Matthew McCann To: [email protected] Sent: Monday, November 22, 2004 1:39 PM Subject: CS>Is electrolysis noisy? I use a critically damped analog microammeter to monitor the electrolysis current, and a rheostat set to match the (initial) interelectrode resistance to limit the current. I notice that when shut off the current at the end of a brewing cycle and turn it on again, the current reading bounces around for many cycles. My microammeter oscillates at a rate of roughly 2 hertz. Investigators of electrolysis in corrosion phenomena sometimes make use of the noise in electrolysis current, to extract more information about what's happening at the electrodes' surfaces. Has anybody tried using headphones, or earphones to listen to the EIS as it is being generated? Thanks in advance for your input! Matthew ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 265.4.1 - Release Date: 11/19/2004
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