In the high-voltage section ( Figure 3 ), the high-voltage transformer along with a special <http://www.gallawa.com/microtech/diode.html>diode and <http://www.gallawa.com/microtech/cap_test.html>capacitor <http://www.gallawa.com/microtech/doubler.html>arrangement serve to increase the typical household voltage, of about 115 volts, to the shockingly high amount of approximately 3000 volts! [DC]

The diode is a rectifier bridge to get DC from AC
I don't know how they have the cap hooked up. Usually it's between the + and - lines to shave off voltage spikes to get clean DC and is therefore always 'shorted out'. In this case it's probably like an old cars ignition "tank" circuit. [I've never taken any care to not touch a car coil..20 to 120 thousand volts.. after the engine stopped..and never got shocked. A leaky wire now...!!!! YOW!!!] In any case, so long as the electrodes are in the water, it's most likely going to discharge about as fast as it charges. [it's shorted out] It would be wise to double check that idea and never turn the machine on with no water.

It seems to me that if you keep the rotating plate arrangement and suspend the electrodes from the top, you get a stirrer.

ode




At 05:38 PM 4/3/2006 -0500, you wrote:

I know that most of you are out buying oil or saving the world (or yourselves) on the OT List, and that some of you shouldn't even be reading this, but I have a question about the high voltage microwave CS maker.

I have seen the setup that "Ole Bob" has in his book which is very instructive, but I would prefer to use the actual microwave with all of the safety interlocks, etc, intact.

Question 1. It looks to me like the capacitor, and therefore the electrodes, will be charged to high voltage if the unit is turned on without the electrodes being in the brewing cell containing water. Ordinarily, the capacitor would discharge through the water of the brewing cell in a short time. However, in this case the capacitor will not discharge, and the next time you go in to set up your cell and electrodes you may get a very dangerous shock. Is this correct?

Question 2. What methods are people using to set up the electrodes and brew cell? Any other ideas about this?


See microwave description and theory at:

http://www.gallawa.com/microtech/how_work.html

http://www.gallawa.com/microtech/doubler.html


Thanks,

Dan


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