Antique radios, Old Time Radios
ST57
| 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)
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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)
|
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ST57: Siemens Röhrentaschenbuch 1963/64
Anonymous 15 Collector
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Just Qvigstad
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ST57: Siemens Röhrentaschenbuch 1963/64
Anonymous 15 Collector
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