[ARC5] R-27/ARC-5 Hookup Question

[J. Forster]

Ken,

Connected normally, the final audio stage B+ does not go through the
choke. If it's biased Class A, the final stage could draw more than the
rest of the set. If it idles at 50 mA, the transformer will dissipate 1W
roughly.

It's not obvious what the parts of the receiver draw for B+.

-John

===============

> On 19 Jul 2013 at 17:47, J. Forster wrote:
>
>> Roughly, yes, except in the dyno powered connection there is an C-L-C
>> filter between the output stage, which is directly on the dyno B+
>> terminal, and the earlier stages of the receiver.
>>
>> I don't know if that choke will handle the DC current of the output
>> stage without failure, if powered from the rear connector.
>
> Yes. It will. It is a 3 H choke, internal resistance, 288 to 363 ohms. Its
> purpose is to filter the dynamotor hash off the DC. It will handle the
> current of
> the receiver easily.
>
> Also, the racks that the receivers normally were plugged into did all the
> power and control from that connector.
>
> Ken W7EKB
>
>