Antique radios, Old Time Radios
872A
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Country:
Worldwide
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Brand:
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Common type Worldwide tube/semicond.
Amalgamated Wireless Valve Co. Ltd. (AWV); Sydney, NSW
Standard Eléctrica S.A.; Rio de Janeiro
Philips; Eindhoven (tubes international!); Miniwatt
Amperex; New York
Cetron Electronics, Continental Electric Co.; St. Charles / Geneva (IL)
Chatham Electronics; Newark, NJ
Collins Radio Company; Cedar Rapids (IA)
Eimac (brand name)
Electronic Enterprises Inc.; Newark, NJ
Federal Radio Corp. / Federal Telephone & Telegraph Co.; Buffalo, NY
General Electric Co. (GE); Bridgeport CT, Syracuse NY
Heintz & Kaufman Ltd. (Gammatron); San Francisco, CA
Hytron; Salem (MA)
Ken-Rad, The Kentucky Radio Corporation; Owensboro, KY
Leeds Radio Co.; New York City (NY)
Machlett Labs (tubes); Springdale, CT
National Union Radio Corp.; Orange (NJ)
Raytheon Mfg. Co.; Cambridge, MA
RCA (RCA Victor Co. Inc.); New York (NY)
Slater; (Where ?)
Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Taylor Tubes Inc.; Chicago (IL)
Westinghouse El. & Mfg. Co. - see also Canadian W.
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| Developer: |
RCA (RCA Victor Co. Inc.); New York (NY) |
| Tube type: |
High Voltage Half-Wave Mercury-Vapor Rec Power-supply |
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| Identical to |
872A
= CE-872A
= RK872A
= GL872A
= WL872A
= F353
= UE-972
= DR872A
= E255
= F353A
= F872B
= WT-210-0027
= VT-42A
= RK872A
= GL872A
= 872AX
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| Similar
Tubes |
Other shape (e.g. bulb type):
HV-972A
Normally replaceable-slightly different:
2V/471A
; 3070
; 319A
; 38172A
; 4064B
; AG872A
; CV642
; DR1/10
; ESU872
; RCA872A
; RG1000/3000
; VH7400
Other base:
8008
; 872G
Multiple differences or of other kind:
SS-872A
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| First Source
(s) |
24.Sep.1943 : Electron Tube Registration List
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| Predecessor Tubes |
872
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| Base |
Jumbo 4-pin bayonet (1918) (Codex=Bz)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 5 Volts / If 7.5 Ampere / Direct / Special heater – See text |
| Description |
High-voltage mercury-vapor rectifier
Work started on the development of this tube at the RCA laboratories in the summer of 1932. The type number was assigned to it early in 1933 and it was announced in April, 1933. Registered on September 24, 1943. Shielded element structure. T-18 bulb, medium cap (JETEC C1-5) and Jumbo 4-pin bayonet base, JETEC A4-29.
- 4.75 to 5.25 V filament voltage
- 7.5 A filament average current, 8 A max
- 30 s min heating time
- 10 kV max PIV at Tamb 20º to 60ºC, derated to 5 kV PIV at 70ºC
- 1.25 A average anode current, 5 A peak
Source: Also Tube Lore II, page 80
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Dimensions (WHD)
incl. pins / tip |
x 217 x 58 mm / x 8.54 x 2.28 inch |
| Weight |
225 g / 7.94 oz |
| Tube prices |
4 Tube prices (visible for members
only)
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| Information source |
Essential Characteristics, GE 1973
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 66, p. 89 & 90
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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872A: Vacuum Tube Rectifier
Günter Kudicke
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872A
Emilio Ciardiello
More ...
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Just Qvigstad
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872A: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
Collection of a member from FIN Collection of a member from D Collection of a member from D |
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