Antique radios, Old Time Radios
CV2957
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Country:
Worldwide
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| Identical to |
CV2957
= 5557
= FG17
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| 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 2.5 Volts / If 5 Ampere / Direct |
| Description |
This tube is a negative control mercury vapor thyratron 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 exitation.
Text in other
languages (may
differ)
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| Information source |
-- Original-techn. papers.
Universal Vade-Mecum, Electron Valves and Semiconductor Devices p. 40
Babani, International Radio Tube Encyclopaedia
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CV2957: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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