Everything about PU sealants
standard values of gm for a small-sign vacuum tube are 1 to ten millisiemens. It has become the three 'constants' of a vacuum tube, the other two remaining its gain μ and plate resistance Rp or Ra. The Van der Bijl equation defines their romantic relationship as follows: g m = μ R p \displaystyle g_ m = \mu \in excess of R_ p numerous guitarists