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FYI: Powergate

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Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Wed Jul 30, 2008 7:31 am Post subject: FYI: Powergate

See: http://www.perfectswitch.com/downloads/relaybrochure.pdf



This guy sells big SSRs. I'd like to see a schematic. But it might be worth looking into. My concern is that he might have miscalculated the dissipation, but I can't tell from the information. 



Anybody want to investigate and report back?

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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

nuckolls.bob(at)cox.net
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Posted: Fri Aug 01, 2008 6:26 am Post subject: FYI: Powergate

At 08:31 AM 7/30/2008 -0700, you wrote:

 	  Quote: 	
		  



See: http://www.perfectswitch.com/downloads/relaybrochure.pdf



This guy sells big SSRs. I'd like to see a schematic. But it might be 

worth looking into. My concern is that he might have miscalculated the 

dissipation, but I can't tell from the information.



Anybody want to investigate and report back?


	


   Looks like these folks have resurrected an idea

   that was explored and abandoned 33 years ago:



http://www.perfectswitch.com/mobipower110vmodule.htm



   This product appears to capitalize on the ability

   of the alternator to output voltage that is many

   times nominal rated output.



http://aeroelectric.com/articles/When_is_110V_not_Over_Voltage.pdf



   I note further that this same company offers

   accessories fitted to modern alternators that

   utilize the alternator's higher voltage output

   abilities to accomplish certain welding

   operations.



http://www.perfectswitch.com/alternators.htm

http://www.perfectswitch.com/mobiarc150.htm

http://www.perfectswitch.com/remotecontrolmodule.htm



   No doubt, modern diodes are considerably more robust

   that those we struggled with in 1975!



   They are in CA and too early to talk to on phone

   right now. I've e-mailed them for more information

   on the high current relays.

   Bob . . .

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nuckolls.bob(at)cox.net
Guest

Posted: Fri Aug 01, 2008 12:40 pm Post subject: FYI: Powergate

At 09:21 AM 8/1/2008 -0500, you wrote:

 	  Quote: 	

<nuckolls.bob(at)cox.net>

At 08:31 AM 7/30/2008 -0700, you wrote:

>

><emjones(at)charter.net>

>

>See: http://www.perfectswitch.com/downloads/relaybrochure.pdf

   Just got a data package from Perfect Switch on their

   "Power-Gate" products. I've combined all the images and

   files into a single .pdf at:

http://tinyurl.com/59faul

   The information is fairly descriptive. The text of

   an accompanying e-mail stated that these are, for

   the moment, un-directional devices. This means that

   effects of the parasitic diode in their large array

   of Power FET devices will "backfeed" power to the source

   should the votlage on the load side become high enough.

   It also means that they're not ready to perform as a

   battery contactor with equally low resistance connection

   for electron flow both directions through the device.

   Prices for the current offerings are given on page

   5 of the file. Here we find that a relay suited for

   carrying starter currents will set you back over

   $300.

   I'm told by my local Gigavac rep that a sample contactor

   has been ordered for us to play with.

   Bob . . .

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