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Re: Circuit design help - power supply - Non FIRST
From your description it sounds like you are experimenting with generating hydrogen from water.
Something to keep in mind: the overall efficiency of the system is the amount of energy you get out (the gas) divided by the energy you put in.
If you have to use amplifiers or other switching electronics to make the system work remember the power at the wall plug is the energy input, not whats across the electrodes.
The reason I bring this up: there are hundreds of websites created by people who think they have defied the laws of physics and come up with perpetual motion machines or motors that put out more power than they are driven with
and a common mistake they tend to make is pulsing the motors with low duty cycle DC pulses and measuring the output from the system as DC or AC. If you used pulsed power you have to get a true-RMS volt / amp / watt meter. Most meters (digital and analog) measure average voltage or current, not the actual RMS voltage. For a perfect sine wave, the average and the RMS values are the same. But when you start pulsing power a regular (average reading) meter will read less than the actual RMS going into the system
As a result, people measure 10W into their system, and 20W coming out, and think they have created an over-unity machine.
True RMS meters (like a Fluke 87) tend to be more expensive, so usually only people who really know what they are doing buy them.
Last edited by KenWittlief : 20-12-2005 at 12:48.
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