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Old 9th May 2011, 01:20 AM   #1
yero is offline yero  United States
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Default 12bh7a

Tube data indicates the tube is used for a tv vertical deflection amplifier. Can each section be used as a line level stage with similar results as the 12b4 which is also used as a tv vertical deflection amplifier. If so what would the plate and cathode resistor values be.
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Old 9th May 2011, 04:34 PM   #2
kevinkr is offline kevinkr  United States
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This tube is similar to the 12AU7A/ECC82 - take a look at typical operating conditions for that tube..(Any RCA tube manual) Much higher mu (20) and rp than the 12B4 incidentally. I used them extensively as long tailed pairs in some of my early commercial PP designs.
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