|palec_original_valve_data_book0001.pdf||METHOD OF VALVE TESTING.
J1ust what constitutes the best method of testing a valve to determine
its general condition, has been the subject of much discussion among
Opinions at one time were divided between the relative efficiency of
the four existing methods viz: the true mutual conductance, the power
output, the grid shift and the emission test.
An avalanche of new valves settled the controversy 1>ybringing the
emission tester into general favour as a commercial valve tester because
it was the only system which could be adapted to incorporate all the
l---.Ability to cope with the hundreds of existing valves as well
as future releases.
2--Simplicity and quickness of operation.
S-Reasonably low selling prices.
The true mutual conductance tester. whilst the most accurate, IS
purely a laboratory instrument requiring as |