High mu twin triode. Designed for use as a push pull zero bias class B amplifier. In such service it could produce more than 2 watts of output when run from a 135 volt supply. Octal version of the earlier type 19. 2.0 volt directly heated cathode. Filament 2 volts at 240 ma. 2.1 watts output in class B. Manufactured by Philips, Sydney, Australia, 1940-1945.

Physical Description

Base type: octal No. of pins in base: 8 Bulb shape: shouldered Bulb material: glass

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