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4hv.org :: Forums :: General Science and Electronics
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IGBT H-Bridge and Misc

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Thomas W
Wed Nov 30 2011, 08:18PM Print
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Hi,
im looking for information about H-Bridges and such

i want to look into making my own Driving Circuits for Flybacks and Circuits for teslacoils

problem is, i know nothing about this side of electronics and want to understand how to design H-Bridge Circuits


thanks,
Tom
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Avi
Sat Dec 03 2011, 10:16AM
Avi Registered Member #580 Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
4 IGBTS Link2
1 GDT Link2
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Patrick
Wed Dec 07 2011, 08:44AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Avi wrote ...

4 IGBTS Link2
1 GDT Link2
In the wikiHV link above for the H-bridge, there are two diagrams as relays. its interesting to see the lower one uses 3 moving connections as a mechanical example. Im still trying to figure out in my head why 3, instead of 4 as would be expected.

OOps nevermind, my bad there are 4 unique connections in a DPDT relay, the extra relay isnt needed to descibe a real H-bridge of 4 SPST's devices.
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Wolfram
Wed Dec 07 2011, 11:33AM
Wolfram Registered Member #33 Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
Patrick wrote ...

OOps nevermind, my bad there are 4 unique connections in a DPDT relay, the extra relay isnt needed to descibe a real H-bridge of 4 SPST's devices.

Yes it is, with a single DPDT relay you have no way to leave the load unpowered.
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