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Re: Fat Diode help

Almost certainly a selenium device.If you value your hea;lth, don't use it,
even at the rated voltage and current. |It will be old, and I have seen old
ones breakdown quite violently. Selenium is extremely toxic.
Steve
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, December 24, 1999 2:36 PM
Subject: Re: Fat Diode help


> Original Poster: "Bill Noble" <william_b_noble-at-email.msn-dot-com>
>
> this sounds like a selenium diode. the square plates are heat sinks, the
> round things are washers, the selenium is between the square plates and
the
> round washers.  I'd assume this to be a low voltage - one section can be
> maybe 12 to 50 volts, I've seen these up to 250 volts or so but not a lot
> higher.  They are also far less efficient than silicon rectifiers (much
> higher forward voltage drop).  They used to be used in battery chargers
> because they could survive a short circuit (because the forward voltage
drop
> was so high).  Keep it as a relic, don't use it.
> ----- Original Message -----
> From: Tesla List <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Thursday, December 23, 1999 10:34 AM
> Subject: Re: Fat Diode help
>
>
> > Original Poster: "Jim Lux" <jimlux-at-jpl.nasa.gov>
> >
> > International rectifier.. at least that's what the logo is.
> > Probably an old selenium stack
> >
> > -----Original Message-----
> > From: Tesla List <tesla-at-pupman-dot-com>
> > To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
> > Date: Wednesday, December 22, 1999 4:49 PM
> > Subject: Fat Diode help
> >
> >
> > >Original Poster: Grayson B Dietrich <electrofire-at-juno-dot-com>
> > >
> > >Okay, while everyone else is at it....
> > >
> > >I have a pair of large diode-marked components, each composed of
> > >alternating  round and square sections, stacked up in about 40 layers.
> > >The overall dimensions are ~ 2"X2"X4"
> > >
> > >With no apparent orderly arrangements, each has these markings:
> > >KSL18DBF
> > >ZBFW
> > >A12
> > >
> > >and in large print: I-diode symbol-R
> > >
> > >Any identifying help would be greatly appreciated.
> > >
> > >thanks,
> > >
> > >Grayson Dietrich
> > >http://www.electrophile.8m-dot-com
> > >
> > >
> > >
> > >___________________________________________________________________
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> > >
> > >
> > >
> >
> >
> >
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