On Mon, 01 May 2000 17:54:45 +0800 Alek Petkovic <vk6apk@eon.net.au>
writes:
>
>G'day from "Down Under.
>I've just ordered 2 sets of 4 x 31LQ6 tubes for my little Dentron
GLA-1000
>amp. These will replace the tired 6LQ6 tubes presently in the unit.
>
>The tube swap will of course necessitate an extra transformer to run the
>heaters of the new tubes.
>
>Does anybody on the reflector have an idea of the current drawn by the
>heaters in these tubes?
>
>I figure that the overall heater VA ratings should be similar to the
6LQ6
>heaters and so I figure on around 2A total for the four tubes in
parallel.
>I have a transformer rated at 100VA which I hope will do the job with a
>generous safety margin.
>
>Am I correct in the above assumption?
Hi Alek,
Yes, that's the way it works -- should be right around 500 mA per
tube. The 31's also have a "controlled" warm-up time which was a
requirement for their original application in series filament string
style TV's.
73,
Marv WC6W 310 649 3111
*
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