Antique radios, Old Time Radios
KY866
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Country:
United States of America (USA)
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| Identical to |
KY866
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| Similar
Tubes |
Normally replaceable-slightly different:
5557
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Br)
Top contact with a cap.
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| Was used by |
Industrial |
| Filament |
Vf 2.5 Volts / If 5 Ampere / Direct |
| Description |
Va <10 kV peak; Ia < 1A peak. Listed in Tube Lore II as type 866KY
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 excitation.
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| Information source |
Tube Lore (II) p. 80
Babani, International Radio Tube Encyclopaedia p. 306
Taschenbuch zum Röhren-Codex 1948/49
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KY866: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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