small valves and RE: OT

[Allison]

>Subject: Re: small valves and RE: OT
>   From: "Dwight K. Elvey" <dwight.elvey at amd.com>
>   Date: Mon, 25 Apr 2005 09:38:10 -0700 (PDT)
>     To: cctalk at classiccmp.org
>
>>From: "Allison" <ajp166 at bellatlantic.net>
>>
>>Myself as well.  The design of this radio is early 50s. I have a similar 
>>circuits from the 1960 RCA tube manual that require only A and B(HT) voltages.
>>However this radio had a battery based on destructive examination and markings
>>that provided 7.5V, 1.5V and 90V.  So the likely case is "C" voltage or as 
>---snip---
>
>Hi
> The 1.5v cell was most likely for the panel light.
>This was common on many of the battery powered sets.
>Dwight
>

Nope, No dial light.  I opened the chassis up and traced the 1.5V.
It runs the audio output 3v5 other half of the filiment.
I suspect they did that to balance the filiment currents.  
Odd but, thats the story.


Allison