[Hallicrafters] vibrators
GDM
1gdm3 at charter.net
Sun Apr 15 00:01:40 EDT 2007
Good point, Glenn. I didn't mention that the same 6.3 VAC filament
xformer was used to power the filaments circuit. Hence the 6.3 VAC
xformer had to be pretty hefty. However, in that era, it was easier to
come up with high current filament xformers than high current DC
supplies. If I also remember, there were often some small chokes in
series with the primary of the vibrator xformer. If you didn't take
them out before applying 6.3 VAC, they smoked!
73, Gary W9OAK
Nash4447 at cs.com wrote:
> The filament transformer to primary of vibrator transformer technique indeed
> does work but the filament tranny tends to run a bit hot. You gotta use a
> pretty husky transformer.
>
>
>
> Glenn K6PZT
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