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Old 24th March 2006, 12:50 PM   #1
jwatts is offline jwatts  United States
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Default Parallel Two Tubes

I am fairly new at this biz and I read some place that is was poor practice to simply wire two tubes in parallel. I am building a new preamp and I want to wire two triodes in the tube (a dual triode tube) in parallel with each other and treat it as a single triode. I didnít know if the electron flow between plates would be going in opposite directions or something for each triode. Is this ok to do? Since am on the subject what about other tube types tetrode, pentode, etc. If it is unlawful to do what is exactly happing to make it a issue.
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Old 24th March 2006, 12:56 PM   #2
SY is offline SY  United States
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In Tennessee, the only thing that's illegal is drinking whiskey in the same county it was distilled.

Tubes can be paralleled, generally without issue. High transconductance tubes may need a bit of attention to separate grid stopper resistors, and layout considerations may sometimes require a bit of inductance here or there, but 99% of the time, you wire 'em up in parallel without incident.
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