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ID = 74833
United States of America (USA)
Brand: Westinghouse El. & Mfg. Co. - see also Canadian W.
Developer: Amperex; New York 
Tube type:  Half-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to WL-575A = 575A

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 10 Ampere / Direct

15 KV PIV, 2.5 A average, 10 A peak, 10 V typical voltage drop.

Glass bulb evolved from early spherical shape to stepped tubular.

Dimensions (WHD)
incl. pins / tip
x 250 x 90 mm / x 9.84 x 3.54 inch
Information source Tube Lore (II)   p. 257

575_a~~1.png WL-575A: Fin Stewart
Fin Stewart

Just Qvigstad


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