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Re: 100KVDC, oil is a resistor

From Bill Martin <wwm@wwmartin.net>
Newsgroups sci.electronics.design
Subject Re: 100KVDC, oil is a resistor
Date 2017-05-18 18:26 -0700
Organization A noiseless patient Spider
Message-ID <oflhef$ko3$1@dont-email.me> (permalink)
References <9282758f-195c-4c6b-8d1b-7b8351e02aea@googlegroups.com> <63c7f2ca-a8bc-459b-8e1a-fc1dc863d0ae@googlegroups.com> <bjtrhc9bg42hpr44u5etdbccmbmh1qha15@4ax.com> <70f98edb-d43d-4aad-b442-fe4a74502b01@googlegroups.com> <f12b4be7-83c5-4788-b638-349a0fa7ac54@googlegroups.com>

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On 05/18/2017 05:46 PM, Bill Beaty wrote:
> On Thursday, May 18, 2017 at 12:43:57 PM UTC-7, George Herold wrote:
> 
>> Sure (maybe) a dielectric in a E-field gradient feels a force.
>> The filaments of oil 'shooting' out of the glass is weird.
>> But maybe the oil is forming around an already existing air
>> breakdown channel. (?)
> 
> Need to try it in hard vacuum.   But first need 300KVDC supply!
> 
> Probably it's just caused by oil conductivity.  Field
> gradients only produce fluid humps, while actual fluid pumping
> requires some milliwatts and some electric current.   He could
> collect those oil streams in a Faraday Cup, to measure their
> average current.
> 
> Gigohms at kilovolts gives microamps of leakage: a current
> which easily could be transporting charged droplets (moving
> a microcoulomb of charged oil per second.)   To prevent the
> droplet-jets, the little streams would have to block the
> microamps by presenting a far higher resistance than mere
> gigohms.
> 
> 
That's only 25,000 DieHards, how many hundred amps did you need? :-)

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Thread

100KVDC, oil is a resistor Bill Beaty <billb@eskimo.com> - 2017-05-17 22:38 -0700
  Re: 100KVDC, oil is a resistor "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-05-18 01:23 -0500
    Re: 100KVDC, oil is a resistor Ecnerwal <MyNameForward@ReplaceWithMyVices.Com.invalid> - 2017-05-18 14:18 -0400
    Re: 100KVDC, oil is a resistor Jasen Betts <jasen@xnet.co.nz> - 2017-05-19 05:21 +0000
  Re: 100KVDC, oil is a resistor Aussie <aussie@none.com.au> - 2017-05-18 15:49 +0800
  Re: 100KVDC, oil is a resistor George Herold <gherold@teachspin.com> - 2017-05-18 06:20 -0700
    Re: 100KVDC, oil is a resistor Martin Riddle <martin_rid@verizon.net> - 2017-05-18 15:32 -0400
      Re: 100KVDC, oil is a resistor George Herold <gherold@teachspin.com> - 2017-05-18 12:43 -0700
        Re: 100KVDC, oil is a resistor Bill Beaty <billb@eskimo.com> - 2017-05-18 17:46 -0700
          Re: 100KVDC, oil is a resistor Bill Martin <wwm@wwmartin.net> - 2017-05-18 18:26 -0700
            Re: 100KVDC, oil is a resistor Bill Beaty <billb@eskimo.com> - 2017-05-20 02:25 -0700
          Re: 100KVDC, oil is a resistor George Herold <gherold@teachspin.com> - 2017-05-19 06:04 -0700
            Re: 100KVDC, oil is a resistor Martin Riddle <martin_ridd@verizon.net> - 2017-05-19 20:13 -0400
            Re: 100KVDC, oil is a resistor Bill Beaty <billb@eskimo.com> - 2017-05-20 02:20 -0700
              Re: 100KVDC, oil is a resistor George Herold <gherold@teachspin.com> - 2017-05-20 08:27 -0700
                Re: 100KVDC, oil is a resistor whit3rd <whit3rd@gmail.com> - 2017-05-20 22:40 -0700
  Re: 100KVDC, oil is a resistor Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-18 16:26 +0000
    Re: 100KVDC, oil is a resistor Martin Riddle <martin_ridd@verizon.net> - 2017-05-19 20:16 -0400
      Re: 100KVDC, oil is a resistor Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-20 07:09 +0000
  Re: 100KVDC, oil is a resistor Jon Elson <jmelson@wustl.edu> - 2017-05-19 15:03 -0500
    Re: 100KVDC, oil is a resistor Jon Elson <elson@pico-systems.com> - 2017-05-19 22:47 -0500

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