Claimed OU circuit of Rosemary Ainslie

[MileHigh]

.99:

Thank you, looking forward to seeing what happens!

MH

[Hoppy]

My circuit is a replication of Aaron's & Peter Lindeman's circuit diagram as posted on the Energetic forum. Using just an AVO analogue meter to do some basic measurements with the circuit running at the shortest duty cycle available by adjustment of the pot , the circuit power is 0.28W * battery voltage which was 25.5V = 7.14W. Heating an identical resistor using a variable PSU to the same stabilised temperature consumes 7.83w. Although these are basic measurements, there is a very close correlation of control and circuit power dissipation here. There was very little heat being dissipated in the mosfet and given that the inductor / resistor is mostly resistive, the true efficiency if measured very accurately with a DSO would probably be quite high. 

Hoppy

[0c]

My circuit is a replication of Aaron's & Peter Lindeman's circuit diagram as posted on the Energetic forum. Using just an AVO analogue meter to do some basic measurements with the circuit running at the shortest duty cycle available by adjustment of the pot , the circuit power is 0.28W * battery voltage which was 25.5V = 7.14W. Heating an identical resistor using a variable PSU to the same stabilised temperature consumes 7.83w. Although these are basic measurements, there is a very close correlation of control and circuit power dissipation here. There was very little heat being dissipated in the mosfet and given that the inductor / resistor is mostly resistive, the true efficiency if measured very accurately with a DSO would probably be quite high. 

Hoppy

Please correct me if I'm wrong, but shouldn't the electrical to heat energy conversion always = 100%, as long as you consider every element in the circuit? Isn't heat just the physical manifestation of entropy? Now try converting back to electricity and see what efficiency numbers you get.

[poynt99]

Hoppy,

Out of curiosity, what was the DC voltage required to obtain your 7.83W control test?

Was the MOSFET and shunt resistor in the circuit?

Thanks,
.99

[MileHigh]

Hey I just lost my dual-citizenship.  Aaron threw a small hissy-fit and kicked my ass.  Funny, it doesn't hurt.

Hoppy:  I think that you are looking good and it is just measurement error.  There has got to be a limit to how good the analog meter does averaging to measure the current consumption.  The higher frequency components in the current waveform probably can't be averaged out, and hence you are measuring less power than there really is.  There are work-arounds to allow you to make pretty accurate measurements without having a DSO through, I even posted one in the Energetic Forum.

I have to answer a lingering question from across the great divide (one tab away) for Quantum, Joit, and Harvey:  Michael's circuit converts the resistive load of the water heater into a reactive load using the triac/heater coil/diode/second heating element.  Most older household electricity meters can't measure reactive power, hence Michael's electrical costs go down.  That's probably a legal loophole in most areas and you can't be accused of stealing electricity, just guessing.  As you can see, it has absolutely nothing to do with Rosemary's circuit.

MileHigh