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Groups > sci.electronics.design > #430145
| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: beads and zero ohm resistors |
| Date | 2016-10-02 08:57 -0700 |
| Organization | Rowland Institute |
| Message-ID | <nsrap101m0f@drn.newsguy.com> (permalink) |
| References | <hb3oubh66n45tr3lfnc7s5im1plq8r72vt@4ax.com> <8ho1cd-50o.ln1@baer-gmbh.com> <44usub96q42eall8n48c9ehch6u48320b2@4ax.com> |
John Larkin wrote...
>
> I don't think we've had any beads fail from
> capacitive charge inrush, but I guess it might
> happen if there were giant electrolytics downstream.
I have an inrush problem with some of my high-voltage
pulser designs, which have electrolytics to deliver
pulses up to 20A. Large external capacitors are also
allowed. In my prototypes I hold off the HV until
200ms after the low-V supplies settle. This means
the switching MOSFET must dissipate a substantial
amount of energy, 1/2 C V^2, or up to 120J for the
onboard caps, and much more for any outboard caps.
--
Thanks,
- Win
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beads and zero ohm resistors John Larkin <jjlarkin@highlandtechnology.com> - 2016-09-28 11:38 -0700
Re: beads and zero ohm resistors Cursitor Doom <curd@notformail.com> - 2016-09-28 18:59 +0000
Re: beads and zero ohm resistors Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-09-28 12:57 -0700
Re: beads and zero ohm resistors John Larkin <jjlarkin@highlandtechnology.com> - 2016-09-28 16:17 -0700
Re: beads and zero ohm resistors John S <Sophi.2@invalid.org> - 2016-09-29 07:16 -0500
Re: beads and zero ohm resistors boB <boB@theresnoplacelikehome.com> - 2016-09-28 14:11 -0700
Re: beads and zero ohm resistors John Larkin <jjlarkin@highlandtechnology.com> - 2016-09-28 14:21 -0700
Re: beads and zero ohm resistors Winfield Hill <hill@rowland.harvard.edu> - 2016-09-29 07:00 -0700
Re: beads and zero ohm resistors boB <boB@theresnoplacelikehome.com> - 2016-09-29 13:59 -0700
Re: beads and zero ohm resistors Winfield Hill <hill@rowland.harvard.edu> - 2016-09-29 14:21 -0700
Re: beads and zero ohm resistors boB <boB@theresnoplacelikehome.com> - 2016-09-30 00:45 -0700
Re: beads and zero ohm resistors "Tim Williams" <tiwill@seventransistorlabs.com> - 2016-09-30 22:18 -0500
Re: beads and zero ohm resistors krw <krw@nowhere.com> - 2016-10-01 23:00 -0400
Re: beads and zero ohm resistors krw <krw@nowhere.com> - 2016-10-01 22:58 -0400
Re: beads and zero ohm resistors "Tim Williams" <tiwill@seventransistorlabs.com> - 2016-09-29 00:06 -0500
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 06:16 -0700
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 07:42 -0700
Re: beads and zero ohm resistors George Herold <gherold@teachspin.com> - 2016-09-29 07:00 -0700
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 07:46 -0700
Re: beads and zero ohm resistors John Devereux <john@devereux.me.uk> - 2016-09-29 16:03 +0100
Re: beads and zero ohm resistors George Herold <gherold@teachspin.com> - 2016-09-29 08:16 -0700
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 09:02 -0700
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 08:52 -0700
Re: beads and zero ohm resistors John Devereux <john@devereux.me.uk> - 2016-09-29 16:56 +0100
Re: beads and zero ohm resistors dagmargoodboat@yahoo.com - 2016-09-29 09:10 -0700
Re: beads and zero ohm resistors Simon S Aysdie <gwhite@ti.com> - 2016-09-29 15:20 -0700
Re: beads and zero ohm resistors John Larkin <jjlarkin@highlandtechnology.com> - 2016-09-29 20:14 -0700
Re: beads and zero ohm resistors Robert Loos <1209@baer-gmbh.com> - 2016-09-30 11:40 +0200
Re: beads and zero ohm resistors John Larkin <jjlarkin@highlandtechnology.com> - 2016-09-30 07:40 -0700
Re: beads and zero ohm resistors Winfield Hill <hill@rowland.harvard.edu> - 2016-10-02 08:57 -0700
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