Thane heins Rodin pulse motor

[Jimboot]

Hi Jim,
Nice numbers you got there, it seems you got OU already with only one genny coil!    Have you tried loading your gen. Coil with a 12v bulb? Say about 10watts  then what will be the output when loaded? Is it still 12v? or maybe higher? Or lower?


Regards cc

yeah those numbers are a little too  close to eah other for elcheapo meters for me to get too excited. Im good with better than 90% atm.mDoh did not even think of that. Yes it does power two 12 v lamps in series but certainly not to full brightness. I just didnt think to measure . I'll go get a 10 watter today. 

[Jimboot]

I'll have to pick up a couple of other meters to measure everything at once as I'm getting some weird anomalies. With a neon hooked up the motor now does speed up slightly but current draw is around 700ma so I'll call that 8.4watt. The neon glows brightly and voltage is bouncing around 50volts across the terminals, haven't measured current yet.

[MileHigh]

Jimboot:

Ok here is where I am at. 12vdc x 600 ma 7.2 watt when the gen coil is not loaded and rotor is running at 21krpm When I measure the output direct to the dmm of the fwbr off the gen coil  I get around 250v x 30ma 7.5 watt

Can you explain how you made your measurements?

When I load the output of a gen coil with a cap or the run batt it speeds up to 30krpm and the run amps drop to 300ma. So our run consumption is now 3.6 watt. Presumably the output gen coil is higher but I'm not sure how to measure that as any load I connect to is going to effect the result.

Do you have a scope?  Assuming that you have the output of the FWBR being fed back to the run battery (no capacitor) then your measurement will be very easy.  You need to measure the output current going to the battery only.  Then you need to measure the return current from the FWB going into the battery only.  i.e. don't mix the current going to the motor and the current back from the coil as a single measurement.  Then just multiply by the battery voltage by each current measurement to get your power.

This measurement is presuming that the battery voltage is nearly constant, which you could verify with a scope.

Any measurement that you make when you just have a capacitor connected as a "load" on the unrectified generator coil output doesn't tell you anything.  In that case all the power is reactive power, not real power.  Energy goes back and forth between the generator coil and the capacitor for net zero power.

MileHigh

[MileHigh]

E2matrix:

"It's not at all unusual to see the battery terminal voltage increase as the battery powers a load."   WTF ?   How about sharing some examples of this apparently common phenomena?

I have seen it on countless clips over the years.  When the battery starts to output power it's also dissipating power internal to itself.  That heats up the electrolyte and the plates and higher temperatures result in a more robust chemical reaction and that gives you a higher voltage.

Looking at changes in battery voltage means almost nothing.  If you want to be serious you can't use that data for anything.  It's a fact.

I presume Jimboot has been around long enough to know who to ignore.

That sounds like sour grapes.  Why should I be ignored?

MileHigh

[Jimboot]

Jimboot:

Can you explain how you made your measurements?

Do you have a scope?  Assuming that you have the output of the FWBR being fed back to the run battery (no capacitor) then your measurement will be very easy.  You need to measure the output current going to the battery only.  Then you need to measure the return current from the FWB going into the battery only.  i.e. don't mix the current going to the motor and the current back from the coil as a single measurement.  Then just multiply by the battery voltage by each current measurement to get your power.

This measurement is presuming that the battery voltage is nearly constant, which you could verify with a scope.

Any measurement that you make when you just have a capacitor connected as a "load" on the unrectified generator coil output don't tell you anything.  In that case all the power is reactive power, not real power.  Energy goes back and forth between the generator coil and the capacitor for net zero power.

MileHigh

I have a USB Scope which is not hooked up atm. . The voltage from the Gen coil, 250v is straight from the FWBR, no cap or battery connected so spinning slowly. I have not measured the current from the gen when connected to the battery but I will.
Thanks.