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Old 3rd June 2008, 11:08 PM   #1
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Default Gas coupling?

Has anyone employed gas coupling to provide a desired voltage drop from the plate to the grid of the tube in the next stage?
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Old 3rd June 2008, 11:17 PM   #2
SY is offline SY  United States
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You mean with a neon bulb? Yes. Noisy, but it works.
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Old 3rd June 2008, 11:18 PM   #3
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No.
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Old 4th June 2008, 12:29 AM   #4
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I was thinking VR tube
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Old 4th June 2008, 01:16 AM   #5
rman is offline rman  Canada
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Would't a VR tube keep the voltage constant and therefore
block the signal as well?

Rolf.
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Old 4th June 2008, 01:37 AM   #6
SY is offline SY  United States
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No, the VR tube keeps the voltage drop across it constant. If there's always (say) 100V between anode and cathode, as the anode moves up a volt, so does the cathode.
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Old 4th June 2008, 01:44 AM   #7
rman is offline rman  Canada
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O yes of course
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