[Prev][Next][Index][Thread]

Re: valve diode tubes ? (fwd)



---------- Forwarded message ----------
Date: Fri, 07 Aug 1998 17:28:49 -0700
From: Jim Lux <James.P.Lux-at-jpl.nasa.gov>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: valve diode tubes ? (fwd)

Tesla List wrote:
> 
> ---------- Forwarded message ----------
> Date: Fri, 7 Aug 1998 02:10:31 +0300 (EET DST)
> From: Kristian Ukkonen <kukkonen-at-cc.hut.fi>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: Re: valve diode tubes ? (fwd)
> 
> On Wed, 5 Aug 1998, Tesla List wrote:
> > Date: Wed, 5 Aug 1998 17:10:03 +0100
> > From: "chris.swinson" <chris.swinson-at-zetnet.co.uk>
> > To: tesla list <tesla-at-pupman-dot-com>
> > Subject: valve diode tubes ?
> >
> > I'm after a diode or valve that will handle 240 watts min, thats at 8Kv -at-30
> > ma.  This must be the minimum spec.
> >
> > Does anyone know of a supplier for them or how much they cost or anything
> > really ?
> 
> http://www.schuricht.de/
> schuhome?pWkorbId=115722938474215&pMainWin=cat&pOpt=2
> 
> Has some HV rectifiers. 866 (10kV 250mA) is 49DEM = 30USD, new.
> 
> That is the only European supplier of HV rectifier tubes with web catalog
> I know of. I have HV diodes from old X-ray equipment that I can swap for
> other things if interested.
> 
> http://www.falls.igs-dot-net/~testequipment/tubes.html
> has a large list and is in Canada.. They list:
> 866 ONS: $16.50 PULLS: $5.50
> 
> Anyone with specs for 8020 (40kV 100mA vacuum rectifier)????

>From Richardson Electronics web page (http://www.rell-dot-com/)

     Specifications

      Anode Cap                                C1-5
      Average Anode Current (A)                0.1
      Base                                     A4-10
      Dimensions Diameter (in) Maximum         2.312
      Dimensions Inches Rigid Length Maximum   8
      Filament Current (A)                     6.5
      Filament Voltage (V)                     5
      Gas Filling                              Vacuum
      Maximum Rating, Average Anode (A)         0.1
      Maximum Rating, Peak Anode (A)            1.5
      Maximum Rating, Peak Inverse (V)          40,000
      Peak Anode Current (A)                    1.5
      Peak Inverse (V)                          40,000

 I seem to recall that the forward voltage drop is something like 150
Volts  The tube is available from Richardson Electronics around here
(Los Angeles area), they can fax you a data sheet for the 8020 or 8020A.
(8020AX is $125 new, last time I checked)

Newark Electronics has the 8020W (from Richardson) at $450+