[Amps] tubes in parallel

R.Measures r at somis.org
Wed Dec 3 06:37:51 EST 2003



>I want to build a grounded grid amp with two triodes in parallel. Would 
>there be a problem if there were two separate sets of plate chokes and 
>suppressors and glitch resistors and combined the RF output of the tubes 
>by connecting both plate coupling caps to a common point at the entrance 
>to the pi-network?

*  No, but there could be a problem if only one suppressor is used for 
two tubes, or there could be a less serious problem if the two 
suppressors are allowed to couple to each other.    It may not be OK to 
ignore C-feedback in a two-tube amplifier since it is double the spec.


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