PA20 Mazda balloon introduced in 1932 2P classic balloon quartet audio valves

Description

The Mazda PA.20 is a directly heated power output triode for use in A.C. mains receivers. The characteristics of this valve with the exception of filament voltage are identical with the PP3/250. It has been designed to reduce hum level present with 4-volts directly heated valves when these are used in other then push-pull circuits. The valve is fitted with a standard 4-pin base or B4

Filament voltage 2

Filament Current 2

Maximum Anode Voltage 300

Mutual Conductance mA/V 6.5

Grid Bias -36