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Country:
United States of America (USA)
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|
Brand:
|
Common type USA tube/semicond.
Genalex, BGE (brand), British General Electric Co. Pty Ltd.; Sydney, NSW.
Osram (tubes/valves) - see British General Electrics; Sydney
Philips Australia
Canadian Marconi Co. Ltd. (CMC, Esterline), Marconi's Wireless; Montreal, QC
Don Shinkukan Seisakusho - Don Vacuum Valve Mfg.; Tokyo
Airex Radio Tubes Co.; New York
Dynamic Radio Tube Works; Newark, NJ
General Electric Co. (GE); Bridgeport CT, Syracuse NY
Macy's, R.H. Macy & Co.; New York, NY
Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Triad Television & Mfg. Co.; Pawtucket, RI
Tung-Sol Electric Inc.; Newark (NJ)
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| Developer: |
Westinghouse El. & Mfg. Co. - see also Canadian W. |
| Tube type: |
Triode, vacuum Power/Output |
|
| Identical to |
45
= 145
= A245
= ER45
= EX645
= G45
= Z-45
= CL-45
= C-245
= NX-245
= 445
= SX245
= MX245
= PA245
= X245
= UX245
= PH245
= AX-245
= RayX-245
= RYB245
= NU-45
= R45_Rogers
= TS-245
= 245-C
= L45
= AC45
= TX-45
= VX245
= T-45
= P245
= ER245
= DX245
= 245
= CX345
|
| Similar
Tubes |
Other shape (e.g. bulb type):
M45
; PM245
Normally replaceable-slightly different:
38045
; FX245
; VT-45
Other class quality (otherwise equal):
536A_Boonton
; CV610
|
| First year |
Mar.1929
Saga of the Vacuum Tube, Tyne page 322.
|
| First Source
(s) |
Jun.1929 : -- Collector info (Sammler)
|
| Predecessor Tubes |
71A
|
|
Successor Tubes
|
2A3
45spec
VT-52
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1.5 Ampere / Direct / Specified voltage AC/DC |
| Description |
According to Tyne, page 322, this audio-power output tube was introduced in March 1929. It is intermediate between UX171A and UX210 and was first named UX245, later in short 245 and 45. See other identical denominations too. The oxide-coated filament operates at 2.5 volts AC or DC, taking 1.4 amperes. The anode is of sheet nickel, carbonized to facilitate radiation. Power output about 0.8 watt.
"Development was started by Westinghouse in June 1928."
|
| Tube prices |
8 Tube prices (visible for members
only)
|
| Information source |
Essential Characteristics, GE 1973
|
45: Courtesy Bureau Belper (De Muiderkring, Bussum)
Anonymous 10 Collector
|
45: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
|
Just Qvigstad
|
45: Sylvania Technical Manual
Peter Hoddow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1289
Collection of
Collection of a member from CH Collection of a member from I |
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Variants
Ausführung mit blauem Glas.
|
|
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Metal coated cylindrical glass version. Complete name: M45. The letter "M" appears only on the boxes and enclosed paperwork, not on the tubes.
Please klick here: M45
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