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ID = 33069
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron   Power-supply 
Identical to ST57 = Ste1000/2,5/15 = PL5559 = FG57 = 5559

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Industrial
Filament Vf 5 Volts / If 4.5 Ampere / Half indirect
Description This tube is a negative control mercury vapor type for use where it is desired to actuate the tube with a change in negative grid voltage. It requires relatively little power and is suitable for use in relay circuits where current flow is desired in the absence of grid excitation. Grid voltage -1.75 at 100 anode volts and -6.5 grid volts at 1000 anode volts. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 169 x 74 mm / x 6.65 x 2.91 inch
Weight 125 g / 4.41 oz
Information source - - Manufacturers Literature   
-- Collector info (Sammler)   

st57_sock.png ST57: Siemens Röhrentaschenbuch 1963/64
Anonymous 15 Collector

Just Qvigstad
ST57: Siemens Röhrentaschenbuch 1963/64
Anonymous 15 Collector


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