valve, tube, thermionic, electron, triode, tetrode, pentode, power,
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valvo, westinghouse, zaerix
Mazda TP22 triode-pentode
The TP22 is a 2V filament battery
triode-pentode frequency changer. The triode and
pentode are separate and the pentode has vari-mu
characteristics. This valve is on the horrid
British 9-pin (B9) base. These are almost
impossible to insert if the view of the socket
is at all obscured, as it often is in sets of
the 1930s
This page rendered Monday, October 6th. 2008 - 23:11:02
