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| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: ping Win, SiC fets |
| Date | 2016-11-03 10:40 -0700 |
| Organization | Rowland Institute |
| Message-ID | <nvfsqd0eec@drn.newsguy.com> (permalink) |
| References | (2 earlier) <skrk1c13nuusgtgnkdu3nru4i8g7a1pldd@4ax.com> <nve1k80d1g@drn.newsguy.com> <d13l1c9c4h4k8fab23q8ie4kdqk0bari9b@4ax.com> <nve4800gli@drn.newsguy.com> <sfnm1cdhvrb1jkmb3fe2e3f3t300k3j38n@4ax.com> |
John Larkin wrote...
> Winfield Hill wrote:
>> John Larkin wrote...
>>>
>>> I need 140 amps. 7KV into 50 ohms.
>>
>> OK, John, if you're hoping for 10ns or
>> better, I suggest you forgattabout it.
>
> Pulsers that make many kilovolts per
> nanosecond have been around for decades.
kV and ns are bad, but doable I suppose.
But 140 amps and ns, with MOSFETs, that's
another matter. 140A/ns creates a voltage
V = L di/dt = 700V of across 5nH. Consider
the FET's source lead inductance carrying
this high dI/dt, and the safe, controlled
10V Vgs you're trying to impose from gate
to source. Ouch.
I'm doing 10A/5ns and having no problem.
> If it was going to be easy, the customer
> could get it somewhere else.
Yep.
--
Thanks,
- Win
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ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:17 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 15:36 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:58 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:50 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 18:02 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 18:34 -0700
Re: ping Win, SiC fets TTman <pcw1.cad@ntlworld.com> - 2016-11-03 08:52 +0000
Re: ping Win, SiC fets Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2016-11-03 09:24 +0000
Re: ping Win, SiC fets Jeroen Belleman <jeroen@nospam.please> - 2016-11-03 10:25 +0100
Re: ping Win, SiC fets John S <Sophi.2@invalid.org> - 2016-11-03 07:11 -0500
Re: ping Win, SiC fets Jeroen Belleman <jeroen@nospam.please> - 2016-11-03 14:32 +0100
Re: ping Win, SiC fets Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-11-03 09:00 -0700
Re: ping Win, SiC fets John S <Sophi.2@invalid.org> - 2016-11-06 17:47 -0600
Re: ping Win, SiC fets Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-03 09:29 +0000
Re: ping Win, SiC fets TTman <pcw1.cad@ntlworld.com> - 2016-11-03 11:43 +0000
Re: ping Win, SiC fets Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-03 12:16 +0000
Re: ping Win, SiC fets upsidedown@downunder.com - 2016-11-03 18:56 +0200
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 08:59 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 10:40 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 11:02 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 11:29 -0700
Re: ping Win, SiC fets dagmargoodboat@yahoo.com - 2016-11-02 15:42 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:54 -0700
Re: ping Win, SiC fets dagmargoodboat@yahoo.com - 2016-11-02 17:10 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:53 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:54 -0700
Re: ping Win, SiC fets Cursitor Doom <curd@notformail.com> - 2016-11-03 15:38 +0000
triacs and electronics engineering Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 10:46 -0700
Re: triacs and electronics engineering Gunther Heiko Hagen <guntherxxx@quantserve.de> - 2016-11-03 18:01 +0000
Re: triacs and electronics engineering John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 11:40 -0700
Re: triacs and electronics engineering Jon Elson <jmelson@wustl.edu> - 2016-11-03 13:56 -0500
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