Forum: Energy Conference
07-03-2012, 04:14 PM
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Replies: 5
Views: 3,441
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Forum: John Bedini
04-13-2012, 09:53 PM
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Replies: 1,862
Views: 430,753
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Forum: John Bedini
04-13-2012, 05:19 PM
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Replies: 1,862
Views: 430,753
Cap Dump
Ron,
Question...
What is the reverse breakdown for the IRFP260 FET?
Thanks, Brent
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Forum: John Bedini
04-12-2012, 01:21 AM
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Replies: 1,862
Views: 430,753
Brent,
Here's a schematic that shows how to...
Brent,
Here's a schematic that shows how to connect the FET. I verified again that the IRFP260 FET (just 1) works on my machine and runs cold to the touch, no heatsink. Be sure to hook up an...
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Forum: John Bedini
04-11-2012, 10:36 PM
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Replies: 1,862
Views: 430,753
Brent,
I may have discovered why your K12A...
Brent,
I may have discovered why your K12A is not working. Data sheets don't seem to be available for that vintage of Douglas Randall SSR's but I was able to piece together some spec's on the...
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Forum: John Bedini
04-11-2012, 09:32 PM
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Replies: 1,862
Views: 430,753
OK we have to figure this out. Its not dumping...
OK we have to figure this out. Its not dumping anything if your cap voltage is rising to 100V. With your size coils you shouldn't be having any trouble flowing RE through the FET side of that SSR. ...
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Forum: John Bedini
04-11-2012, 04:01 PM
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Replies: 1,862
Views: 430,753
Les,
Thank you. That's exactly what I'm...
Les,
Thank you. That's exactly what I'm saying! With our 3 coil monopole wheels we can get a little over 1:1 but by adding the energy from the re-gauging motor in generator mode (or even another...
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Forum: John Bedini
04-10-2012, 06:56 PM
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Replies: 1,862
Views: 430,753
Patrick,
Thank you for your last two posts. ...
Patrick,
Thank you for your last two posts. Good insights and observations.
To me the FET inside the SSR is just a conduit through which the radiant energy (RE) flows. It doesn't have to...
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Forum: John Bedini
04-10-2012, 04:38 PM
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Replies: 1,862
Views: 430,753
Ron, I have been experimenting with something I...
Ron, I have been experimenting with something I don't have a good handle on it yet but I can see something new in using super poles for the axle generator. I have some testing to do but something for...
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Forum: John Bedini
04-09-2012, 11:55 PM
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Replies: 1,862
Views: 430,753
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Forum: John Bedini
04-09-2012, 11:23 PM
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Replies: 1,862
Views: 430,753
Ssr
Patrick,
Yes the SSR is Mouser Part# 528-6312AXXMDS-DC3 and also available from Allied.
Ron
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Forum: John Bedini
04-09-2012, 10:28 PM
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Replies: 1,862
Views: 430,753
Thanks Vissey.
Patrick,
I think I will...
Thanks Vissey.
Patrick,
I think I will have to get a video camera soon! Any one want to trade a video camera for a 3-pole kit fully assembled and a NS window motor kit also fully assembled?:) ...
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Forum: John Bedini
04-09-2012, 05:46 PM
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Replies: 1,862
Views: 430,753
SSR Cap Dump
Well after all the messing around with different cap dump circuits it turns out that John Bedini's SSR cap dump works the best (for my wheel anyway). Is anyone surprised? He did say it was simple...
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Forum: John Bedini
04-04-2012, 07:17 PM
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Replies: 1,862
Views: 430,753
Les,
Excellent! What circuit are you using...
Les,
Excellent! What circuit are you using and what is your cap dump rate?
Awhile back there was talk of using an air coil for tuning that some saw at the last conference. Anyone know how...
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Forum: John Bedini
04-04-2012, 05:19 PM
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Replies: 1,862
Views: 430,753
Thats a good start. I will also try covering...
Thats a good start. I will also try covering coils with a metallic sleeve as Ed L. showed (soft iron, I think would be best). My SSG has one coil with seven power windings and one trigger wire all...
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Forum: John Bedini
04-03-2012, 10:36 PM
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Replies: 1,862
Views: 430,753
Hi Les,
This NE2 trigger circuit works great...
Hi Les,
This NE2 trigger circuit works great with a 36V system and its simple and definitely dumps current. I've tried several sidacs and they tend to stay on too long and cause problems but...
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Forum: John Bedini
03-28-2012, 01:27 AM
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Replies: 1,862
Views: 430,753
Brent,
I think the SSR inside the box in...
Brent,
I think the SSR inside the box in JB's video is a Douglas Randall K08A with a FET switch and probably rated for a load voltage around 40-50V. The FET breakdown voltage is not listed on...
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Forum: John Bedini
03-27-2012, 06:46 PM
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Replies: 1,862
Views: 430,753
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Forum: John Bedini
03-19-2012, 05:01 PM
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Replies: 1,862
Views: 430,753
Les K.
Add a small load to the shaft of your...
Les K.
Add a small load to the shaft of your wheel and that will make the hall adjust a little less sensitive. The load represents the regauging motor load on JB's wheel and is necessary for...
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Forum: John Bedini
03-19-2012, 04:53 PM
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Replies: 1,862
Views: 430,753
Patrick,
When you get ready to run your big...
Patrick,
When you get ready to run your big wheel try this cap dump circuit. It's similar to what John K posted awhile back just different components. It works well on my 5 foot wheel.
Ron
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Forum: John Bedini
02-25-2012, 01:30 AM
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Replies: 1,862
Views: 430,753
Great Week
John K,
Great summation! Its been an excellant week on this thread. Have a great weekend and thanks for the explanations.
Ron
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Forum: John Bedini
02-24-2012, 08:27 PM
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Replies: 1,862
Views: 430,753
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Forum: John Bedini
02-24-2012, 08:03 PM
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Replies: 1,862
Views: 430,753
48V Cap Dump
Brent,
The 48V level of the cap seems to be where the opto coupler FET in the box breaksdown and dumps the negative spike to the battery. I don't think the 48V was picked as much as thats what it...
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Forum: John Bedini
02-23-2012, 11:24 PM
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Replies: 1,862
Views: 430,753
Ssr #
John K,
It looks like a Douglas Randall Model K08A or K12A. Its hard to tell. The K08A is rated 8A and 32VDC on the load side and the K12A at 12A. Each is described as a bipolar transistor...
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Forum: John Bedini
02-23-2012, 09:02 PM
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Replies: 1,862
Views: 430,753
FET Switching
Thank you John for giving us a look inside the box. We've all been very curious! Using the opto-coupled SSR package makes for very covenient mounting inside the box. Saves having to heatsink and...
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