Antique radios, Old Time Radios
PL57
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
Top contact with a cap.
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| Was used by |
Industrial |
| Filament |
Vf 5 Volts / If 4.5 Ampere / Half indirect / Specified voltage AC/DC |
| Description |
This tube is a negative control mercury vapour type for use where it is desired to actuate the tube with a change in negative grid voltage. It requires relatively little grid power and is suitable for use in relay circuits where current flow is desired in the absence of grid excitation.
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
-- Collector info (Sammler)
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PL57
Egon Strampe
More ...
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PL57: Valvo Röhrentaschenbuch 1957
Anonymous 10 Collector
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Just Qvigstad
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PL57: Kretzmann, Schaltungsbuch, 1955
Anonymous 15 Collector
More ...
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