Re: Filament voltages

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

Dave: Am I reading correctly, 4 tubes with 10V 10 A fill. If so that is 10V
40 Amps or 400 watt. I would not use under # 10 wire to avoid wire heating.
       Robert  H 

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Wed, 01 May 2002 08:01:27 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: Filament voltages
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Wed, 1 May 2002 08:13:52 -0600
> 
> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <davep-at-quik-dot-com>
> 
> Tesla list wrote:
> 
>> Original poster: "sundog by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> 
>> <sundog-at-timeship-dot-net>
> 
>> Hi Dave,
> 
>> The tranny for the Quad 833 is a separate tranny than the
> 
>> plate tranny.  It's wound with 1/8" tubing on an old NST core.
> 
>> Unloaded I get 10.2v on it, loaded that drops to around 7v
> 
>> (pushing 4 tubes).  Do I need to correct the fully-heated
> 
>> filament voltage to 10v, or let it sit at 7v?
> 
> 
> I would certainly correct it.  cf someone else's
> quite thorough posting on the problems with
> underpowering the filaments.
> 
> As to the wiring (another other post) I can't see
> #8 for 10 Amps for short runs.  #14 should be fine,
> even #12 would be generous.
> 
> best
> dwp
> 
> 
>