Muller Dynamo

[RAD-HHO]

Oops !

Yes i meant R, as i said originally :

"Power=Voltage squared / resistance,"

So how do i measure both simultaneoulsy ?

I know there is current there because i can light CFL's.

You don't! You measure Voltage and current. You have to have both to have power.
The cfl is high frequency, and as you stated before, you need a scope for that.
Rick

[DeepCut]

You don't! You measure Voltage and current. You have to have both to have power.
The cfl is high frequency, and as you stated before, you need a scope for that.
Rick

I don't what, measure them both simultaneously or i don't have current ?

I know i have current because i can also light incandescent bulbs and drive small motors.

How do you measure both of them simultaneously when you're doing your HHO stuff ?


Cheers,

DC.

[konehead]

Hi Deep cut

convert it to DC first with 4 high voltage diodes arranged as fullwave bridge rectifier, or jsut use a FWBR of around 600V rating...

then put a HV DC cap across the DC output of the FWBR...say 10uf or so....

then put a resistor across the the DC cap (also is the DC output of the FWBR too)

Experiment with resistor values...probably something like 100ohm might work for you with the high voltage of around 400V and small amps you have from those thin-wire coils....try to make the voltage drop around halfway down with the resistor value you choose...its nice to use a potentiometer here to easliy adjust resistance for a good value to find.

so you need to measure voltage ACROSS that resistor, and SIMULTANEOUSLY measure the  current going TO the resistor too - so you will need two meters, one measuring votlage, one measuring current.
You will find that ohms law will fit things nice doing this "lump resistive load" testing.. - such as, if you know the resistance and voltage, you can calculate the amps is going to be... but its good to measure voltage and current same time with a resistor like described to make sure what things are...

doing it as an estimation, quick and dirty, (like you did already) look at the maximum amps possible across the coils, I call this "crowbarring" the coil with an ammeter - voltage will be near zero doing this, but dont worry about it for now...

then see what you get in voltage across the coils with no resistance at all across it - I see you got around 400V I think....

so if you know the "maximum voltage unloaded" and also know the "maximum crobarred amps" across a coil then the "general rule of thumb estimation" is that you will get HALF the voltage with a resistive load, and you will get HALF the amps with a resistive load....so times (max volts/2)  X  (max amps/2) and that is approximatly what to expect....the BIG DEAL is what happens to the motor-draw in amps when you apply the resistive load.............proabaly whatever you make in watts, is going to be what the motor goes up in watts too - depends on how effecient things are....

but you got a SPEED UP with the coils crowbarred with AMMETER...thats VERY GOOD

[garrypm]

Gaz,

You can also do the measurement with only one meter.

Measure and record the voltage across your appropriately found resistor - per Kone.

Then disconnect the resistor and check it's actual resistance.

Using OHMS law V=I x R   - 

you now know V - volts
             also  R - resistance

then I - current must equal V divided by R.

too easy


1 + 1 = ?

Garry

[DeepCut]

OK thanks you two that's all very helpful

Thane Heins told me i should ahve the coils connected in parallel so i wil try that later also.

Unfortunately, shorting the output results in normal generator action, i'm not sure what ohmage resistor is used to measure in the 50 mA range on an analogue meter but it must be fairly low, so i think there's a tight load range that this nconfig can support.

Last night i tried a single, small coil on it's own, a 2 oz coil (the ones in the previous post are 1 lb), the accelerative rate of the speedup was ridiculous and the drop in mA was the best i've ever seen too. If it doesn't work out with these big coils i may wind them into lots of small ones, looks like it may be heading more and more toward a Muller-style setup.


Cheers,

Gary.