[sdiy] tube phono
MAGUS SHIP
elmystico at earthlink.net
Tue Feb 19 05:37:45 CET 2002
yeah I noticed that the mutiple cap i had in the circuit analysis book had
one lower voltage rating but this one all 3 are the same...No way I'm gonna
use a weird old surplus cap in an application with this high of a voltage
rating. I'll get three new electrolytics and post an update soon!
thanks
----------
>From: "John L Marshall" <john.l.marshall at gte.net>
>To: "MAGUS SHIP" <elmystico at earthlink.net>, "synth" <synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] tube phono
>Date: Mon, Feb 18, 2002, 11:15 PM
>
>Magus,
>
>Multiple capacitors are history. Use three new 40uf @ 150V. You may be to
>find NOS from an anitque radio web site but I don't recommend it. Too old.
>
>Are all three rated at 150V? Usually one is rate at a much lower voltage for
>the cathode circuit of the power amplifier. This capacitor eliminates the
>audio negative feedback.
>
>John
>
>----- Original Message -----
>From: MAGUS SHIP <elmystico at earthlink.net>
>To: synth <synth-diy at dropmix.xs4all.nl>
>Sent: Monday, February 18, 2002 7:32 PM
>Subject: [sdiy] tube phono
>
>
>> hey all I'm working on that tube record player I was poating about a
>couple
>> weeks ago. The 3 filter caps are 40uF @ 150V electrolytics but they're
>all
>> in one package that looks like a model rocket engine... I've got a picture
>> of one like that in an old circuitry analysis book but haven't been able
>to
>> find one in anything current...do they still make such things? It has 3 +
>> leads and one - lead so it looks like it's specifically made for filtering
>> applications where everythings going from positive to GND...
>> Otherwise I can sub 3 40uF @ 150V electrolytics and tie the -'s together
>to
>> gND and do it that way.
>> Thanks!
>
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