I wired my 3CPX5000A7(YC-156/179) so the blower has to be turned on before
anything and timed for 5 mins of blower AFTER all power has been
removed...And yer right, the tube is a brute...Jim... K7RDX..
----- Original Message -----
From: "Robert B. Bonner" <rbonner@qro.com>
To: "'Larry Carman'" <lncarman@swbell.net>; <amps@contesting.com>
Sent: Friday, October 20, 2006 8:55 AM
Subject: Re: [Amps] Testing amp with no air flow
> Yes the YC-156 is a huge Brutus tube. One with 3CX15K internals. But
also
> a 15V 15 amp filament (a 225 watt light bulb) If that had been an older
> designed tube like say a 3CX3000 the anode could have been laying on the
> chassis the next morning.
>
> A guy has to watch when building a home brew amp. These Plasmatron
Heaters
> I modify have separate fusing for Blower and PA Filaments. The same thing
> could happen if for some reason you lost the blower fuse.
>
> There's something to be said for blowers and filaments on the same
circuit.
>
> BOB DD
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Larry Carman
> Sent: Friday, October 20, 2006 10:30 AM
> To: amps@contesting.com
> Subject: Re: [Amps] Testing amp with no air flow
>
> That's good news to know Theo. Thanks for passing it along. The 8877 would
> probably evaporate after a long period of filament operation without air
> flow.
> Larry N5BIP
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Theo Bellamy
> Sent: Friday, October 20, 2006 10:13 AM
> To: amps@contesting.com
> Subject: Re: [Amps] FW: Testing amp with no air flow
>
>
>
>
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