[AMPS] bright light

[Jerry Flanders]

At 04:43 AM 11/18/2001 -0800, 2 wrote:

> >
> >
>In FM broadcast service, 8281/4cx15,000As emit blue light through the
>anode insulator.  However, this phenomen can only be seen when no chimney
>is used in the design.
>
Must be from some kind of corona discharge from the HV. It cannot be from 
tube/element heat if it is blue. Is ordinary corona blue?

Jerry W4UK


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