Author Topic: How to find the efficiency of a fuel cell  (Read 25306 times)

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• Hero member
• Posts: 4557
Re: How to find the efficiency of a fuel cell
« Reply #56 on: May 09, 2008, 19:59:47 pm »
(Too days ago I modified my alternator like the mer wfc test drawing to see if it made a difference. Mine is now a 3 pack I removed the other three and have a neutral tap off the center)

This is the connction you are using now Karebill ?
Without the resonant charging chokes and with only 3 diodes?

hm

Hi bill,

The neutral wire, i call it the 4th wire . When you go and use it, you will see a drop in voltage. So you also will get less amps.

br
steve

waterfalcon

• Guest
Re: How to find the efficiency of a fuel cell
« Reply #57 on: May 11, 2008, 18:35:08 pm »

You are not using spacers in your design?

If you are not then perhaps you are getting a standing wave in the water column between inner and outer pipes or the flowing water increases gas production?

thanks again

• Jr. member
• Posts: 44
Re: How to find the efficiency of a fuel cell
« Reply #58 on: May 12, 2008, 02:07:03 am »
Hi Karebill.

set a frequency of 2khz on the amplifier , hook a 4v supply in series and connect to the rotor. Disconnect the 6pack rectifier from the stator. Spin the alternator , Check what`s on one of the 3 phases of the alternator with the oscope.  post a pic of it please.

Here are some pictures of the 2000hz + 4vdc into the rotor and checked from the stator defore the diodes
first pic is 2000hz + 4vdc  into the rotor
second pic is the stator with 0hz + 4vdc
third pic is the stator with 2000hz + 4vdc
Its hard to see in the pic but there are lots of small waves following the large wave.

• Member
• Posts: 223
Re: How to find the efficiency of a fuel cell
« Reply #59 on: May 12, 2008, 09:26:43 am »
I` think that is close. Can you focus a little more on the waveform to see the superimposed smaller wave.

below I used that program and generated 2 tones, a 5000hz waveform superimposed on a 400hz carrier (generated by rpm of alternator)
Try vary the frequency from 1000hz to 10000hz and see if production gets better at some point.
The problem we have with the soundcard generator is that we are not allowed to get a clean waveform when setting above 10khz.
« Last Edit: May 12, 2008, 09:55:04 am by hydrogenmask »

• Jr. member
• Posts: 44
Re: How to find the efficiency of a fuel cell
« Reply #60 on: May 12, 2008, 13:59:16 pm »
I` think that is close. Can you focus a little more on the waveform to see the superimposed smaller wave.

below I used that program and generated 2 tones, a 5000hz waveform superimposed on a 400hz carrier (generated by rpm of alternator)
Try vary the frequency from 1000hz to 10000hz and see if production gets better at some point.
The problem we have with the soundcard generator is that we are not allowed to get a clean waveform when setting above 10khz.
I get a clean waveform up to 21000hz then it starts going backwards. I don’t know why you only get up to 10000hz. It is all in the soundcard I’m guessing. I can see the waveform but the camera doesn’t show it clearly. I took a dozen pictures to get on to show up that clear. That picture is three tones 2000hz waveforms superimposed on the larger one. Almost like a 2000hz 3 phase ridding the carrier. Try using three tones of any number but matching and post a picture of it.

• Member
• Posts: 223
Re: How to find the efficiency of a fuel cell
« Reply #61 on: May 12, 2008, 17:51:13 pm »
Yes maybe it is the soundcard that I need to change.

That picture is three tones 2000hz waveforms superimposed on the larger one. Almost like a 2000hz 3 phase ridding the carrier.
Wow now that is strange. How could there  be 3 waves on top, if we are measuring on One of the phases of the stator!
Things are getting complicated
Can you post a video of the signal on the oscope?
Try to set the oscope on a larger timebase setting.

« Last Edit: May 12, 2008, 17:56:50 pm by hydrogenmask »

• Jr. member
• Posts: 44
Re: How to find the efficiency of a fuel cell
« Reply #62 on: May 15, 2008, 01:13:26 am »
I think my scope is crapping out. Its doing some weird things. Anyone tried a computer USB scope.