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Groups > sci.electronics.design > #462427
| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: 5 to 10kV rated gate transformers |
| Date | 2017-05-31 07:30 -0700 |
| Organization | Rowland Institute |
| Message-ID | <ogmk1n01vpe@drn.newsguy.com> (permalink) |
| References | <ofifji02a2d@drn.newsguy.com> <ofjeat$mfm$1@dont-email.me> |
Tim Williams wrote...
>
> FWIW, I've hi-potted one small common mode choke that
> failed at 15kV -- it jumped pin to pin, not over the
> bobbin separator fin.
>
> Slow for gate drive, but maybe that's okay, I don't know. :)
Yes, I had been evaluating CM chokes, which often have
quite impressive insulating distances. I settled on
a Panasonic ELF-21C023A. It has Lm = 1.7mH, Ll = 40uH
and Rcoil = 0.08 ohms. An 100kHz H-bridge running from
24V, with 1N5819 Schottky bridge rectifier, makes a 24.5V
output, into 5mA load, 23.6V at 25mA, according to SPICE,
for +20,-4V SiC drive. The magnetizing current (discharge
and charge the bulk cap) is a modest 66mA p-p.
My next step, play with potting and a month-long 2x
overvoltage test at 10kV.
> Winfield Hill wrote in message
> news:ofifji02a2d@drn.newsguy.com...
>>
>> Suggestions for sources of gate transformers, rated for
>> 5 to 10kV continuous DC. Or actually, small 1:1 or 1:2
>> transformers to make simple dc-dc converters for 5kV
>> gate-drive.
--
Thanks,
- Win
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5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-05-17 14:33 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-05-17 15:09 -0700
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-05-31 07:39 -0700
Re: 5 to 10kV rated gate transformers "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-05-18 01:21 -0500
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-05-31 07:30 -0700
Re: 5 to 10kV rated gate transformers oldschool@tubes.com - 2017-05-18 08:34 -0400
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-05-18 10:07 -0700
Re: 5 to 10kV rated gate transformers Klaus Kragelund <klauskvik@hotmail.com> - 2017-05-18 10:53 -0700
Re: 5 to 10kV rated gate transformers speff <spehro@gmail.com> - 2017-05-18 12:59 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-05-31 22:03 +0200
Re: 5 to 10kV rated gate transformers Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-05-31 13:22 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-05-31 23:04 +0200
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-05-31 15:57 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-01 07:47 +0000
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-01 07:13 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-01 14:28 +0000
Re: 5 to 10kV rated gate transformers Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-01 07:42 -0700
Re: 5 to 10kV rated gate transformers Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-01 07:43 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-01 08:47 -0700
Re: 5 to 10kV rated gate transformers klaus.kragelund@gmail.com - 2017-06-02 01:25 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-02 07:59 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 09:21 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-02 09:32 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 10:08 -0700
Re: 5 to 10kV rated gate transformers Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-06-02 10:21 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 10:46 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-02 17:54 +0000
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 11:02 -0700
Re: 5 to 10kV rated gate transformers Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-06-02 11:05 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-02 18:16 +0000
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 11:32 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 12:15 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 12:43 -0700
Re: 5 to 10kV rated gate transformers klaus.kragelund@gmail.com - 2017-06-02 10:04 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 10:54 -0700
Re: 5 to 10kV rated gate transformers "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-06-02 17:35 -0500
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 15:56 -0700
Re: 5 to 10kV rated gate transformers upsidedown@downunder.com - 2017-06-01 17:44 +0300
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-01 14:57 +0000
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-06-01 08:05 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-01 08:45 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-01 16:07 +0000
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 11:08 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 11:37 -0700
Re: 5 to 10kV rated gate transformers Klaus Kragelund <klauskvik@hotmail.com> - 2017-06-01 07:33 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-01 14:56 +0000
Re: 5 to 10kV rated gate transformers upsidedown@downunder.com - 2017-06-01 12:08 +0300
Re: 5 to 10kV rated gate transformers habib.bouaziz@gmail.com - 2017-06-01 04:12 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-01 07:15 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-18 20:08 +0000
Re: 5 to 10kV rated gate transformers upsidedown@downunder.com - 2017-05-19 00:03 +0300
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-05-18 14:12 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-05-31 10:48 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-05-31 21:50 +0200
Re: 5 to 10kV rated gate transformers Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-05-31 12:57 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-05-31 22:10 +0200
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-01 13:09 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-06-01 23:17 +0200
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-01 14:35 -0700
Re: 5 to 10kV rated gate transformers habib.bouaziz@gmail.com - 2017-06-02 07:01 -0700
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-06-02 08:44 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 09:19 -0700
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-06-02 11:18 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highlandtechnology.com> - 2017-06-02 09:28 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 09:35 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 11:16 -0700
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-06-02 14:02 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 14:36 -0700
Re: 5 to 10kV rated gate transformers John Larkin <jjlarkin@highland_snip_technology.com> - 2017-06-02 16:08 -0700
Re: 5 to 10kV rated gate transformers Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-06-02 16:46 +0000
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-06-02 23:13 +0200
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 14:39 -0700
Re: 5 to 10kV rated gate transformers habib <h.bouazizviallet@free.fr> - 2017-06-03 09:47 +0200
Re: 5 to 10kV rated gate transformers klaus.kragelund@gmail.com - 2017-06-03 04:28 -0700
Re: 5 to 10kV rated gate transformers Jasen Betts <jasen@xnet.co.nz> - 2017-06-07 20:03 +0000
Re: 5 to 10kV rated gate transformers Winfield Hill <hill@rowland.harvard.edu> - 2017-06-08 10:12 -0700
Re: 5 to 10kV rated gate transformers dagmargoodboat@yahoo.com - 2017-07-13 07:35 -0700
Re: 5 to 10kV rated gate transformers Terry <respect__privacy@hotmail.com> - 2017-06-02 06:06 -0700
Re: 5 to 10kV rated gate transformers Joerg <news@analogconsultants.com> - 2017-06-02 09:27 -0700
Re: 5 to 10kV rated gate transformers bloggs.fredbloggs.fred@gmail.com - 2017-07-13 07:43 -0700
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