[Milsurplus] FW: requesting data on TBW audio transformers

[Richard]

Correction:  That's 200 to 3500 cycles...


On 06/03/2018 03:42 PM, Richard wrote:
>
> A bit late, but:
>
> T205  Audio Input Transformer
>
> Ratio 1:32  200 to 350 cycles
>
> Pri. 1 to 2  0.5 volt  .08A.  400 turns  11 Ohms,  (carbon mic. input)
>
> Sec. 3 to 4  16 volts  12,500 turns  7,700 Ohms,  (to 843 grid)
>
>
> T204 Modulation Transformer
>
> Pri.  1 to 2  147 volts  .02 A.  2800 turns 620 Ohms,  (Conn 843 plate)
>
> S1   7 to 6  31 volts   600 turns 230 Ohms
>
> S1   6 to 5  21 volts  400 turns  180 Ohms
>
> S1   5 to 4  53 volts  1000 turns  400 Ohms
>
> Terminals 4 to 7 feed the 803 suppressor for AM modulation
>
> S2   3 to ground,  8 volts  7 turns 0.027 Ohms,  (voice side-tone output)
>
> Richard, AA1P
>
>
> On 05/23/2018 07:04 PM, Hubert Miller wrote:
>>
>> *From:* Hubert Miller
>> *Sent:* Wednesday, May 23, 2018 4:02 PM
>> *To:* Military Surplus Mail List <milsurplus at mailman.qth.net>
>> *Subject:* requesting data on TBW audio transformers
>>
>> If someone has easy access to their TBW manual, and feels like doing 
>> a little ( a little ) pro bono work:
>>
>> earlier this year I scrapped a TBW supply, keeping just a few parts.
>> I kept the audio transformers. I would like to know the working 
>> impedance of the two audio transformers
>>
>> ( not the 0.65H choke ) and/or the pinout. I kept these parts because 
>> 1. audio transformers are less and
>>
>> less common and 2. for possible homebrew receiver project.
>>
>> I'm taking a guess that one xfmr is mic to grid and one is plate to 
>> 803 suppressor.
>>
>> tnx, Hue
>>
>>
>
>
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20180603/0d7d0fd5/attachment.html>