[ARC5] ARC-5 receiver audio transformer question

[Brian Clarke]

Hello Ken,

I know the feeling - I have a similar neon with one lead broken off at the 
glass bead.

If you allow 500 mW to 1 W output across 7000 Ohm, the input Voltage to the 
transformer would be 84 V max. That would be very loud in headphones. So, I 
would use any low-power neon tube that fired at about 65 V (= 0.6 W audio 
level). I suspect that any mains indicator neon lamp would do the job.

73 de Brian, VK2GCE.

On Wednesday, July 30, 2014 2:29 PM, Ken said:


> <snip>
>
> Then, I removed, one at time, the neon bulbs from the bad transformers,
> as carefully as I could, with a view to reinstalling one on the good
> transformer.
>
> However, first I broke a lead off one of them right at the glass, and
> when moving the second one, I dropped it and shattered the glass on the
> concrete floor.
>
> Drat!
>
> I looked up what that bulb is, and the manual says it is a GE type T-2.
> So far, I have not found any specifications for the T-2, and as far as I
> can find out, the only neon bulbs still available are the NE-2.
>
> So now what?
>
> Anyone have any suggestions?
>
> I want to install this transformer in one of my badly "pre-hacked"
> receivers in which the output transformer is missing.
>
> Ken W7EKB