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Old 24th April 2009, 12:00 PM   #1
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Default Purple Glow

I seem to remember a thread about valves which emitted a rather nice purple glow when operating. Does anyone know which one this is, or more importantly what amp it was referring to and is it any good?

Thanks.
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Old 24th April 2009, 12:18 PM   #2
Klimon is offline Klimon  Belgium
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You probably mean American / European voltage regulator tubes...
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Old 24th April 2009, 01:32 PM   #3
Colt45 is offline Colt45  Serbia
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0D3?
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Old 24th April 2009, 01:56 PM   #4
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Quote:
Originally posted by Colt45
0D3?
0C3 is the same shade of purple/pink as 0D3. 0B3 is an absolutely beautiful indigo, but it isn't so bright...0A3 is of course orange( and quite bright ).
cheers,
Douglas
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Old 24th April 2009, 05:16 PM   #5
Jeb-D. is offline Jeb-D.  United States
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Some Xenon filled rectifiers also glow purple.

(picture from another thread, not mine)
Click the image to open in full size.
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Old 24th April 2009, 06:00 PM   #6
EC8010 is offline EC8010  United Kingdom
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Default Kids, don't do this at home...

Did that picture come from the "Most Dangerous Lash-Ups" thread?
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Old 24th April 2009, 07:39 PM   #7
rknize is online now rknize  United States
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0A2 in the Thomas amp:

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Old 24th April 2009, 10:41 PM   #8
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I had an old Ampeg Bass amp with an 80 rectifier that not only glowed purple, but pulsed with the music....prehistoric lightshow !!!!
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Old 25th April 2009, 01:15 AM   #9
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Quote:
Originally posted by Jeb-D.
Some Xenon filled rectifiers also glow purple.

(picture from another thread, not mine)
ouchhhhhhh! don't operate a mercury vapor tube in that position.
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Old 25th April 2009, 05:51 AM   #10
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Quote:
ouchhhhhhh! don't operate a mercury vapor tube in that position.
Why? What's it do? Didn't all the Hickok testers operate the 83s in that position?
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