The small AC generators for telephone installation work can
be identified by numbers with one or more suffix letters. The first
suffix letter will signify the resistance (Letters A to L) and the
additional suffix letters (M to Z) the way the generator is mounted.
| Generator No. 2A Three magnet
generator of 500ohms.
Includes a Handle, Generator No. 9.
Connection code K.
Diagram - TL707.
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| Generator No. 2AN Three magnet
generator of 500ohms in a wooden case.
Dimensions - 7.1" x 6.1" x 4.75".
Includes a Handle, Generator No. 9.
Connection code K.
Diagram - TL707.
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| Generator No. 3A Four magnet
generator of 500ohms.
Includes a Handle, Generator No. 4.
Connection code L.
Diagram - TL707.
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| Generator No. 3AN Four magnet
generator of 500ohms in a wooden case.
Includes a Handle, Generator No. 4.
Connection code L, F, B or E.
Diagram - TL707.
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| Mark |
Case dimensions |
Connection Code |
| 234 |
- |
L |
| 2013A |
7.5" x 7" x 6" |
F |
| NT 9 |
8" x 6.5" x 5" |
B |
| GNH |
7" x 7" x 4.75" |
E |
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| Generator No. 4C Two magnet (Marks
234 & 235) and three magnet (Mark 236) generator of 400ohms.
Includes a Handle, Generator No. 6.
Connection code K.
Diagram - TL707.
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| Generator No. 4CN, CO & 4CP Effectively a
Generator 4C in a wooden case. Generator No. 4CO was used in the
Telephone No. 59 Mark NT8. Generator No. 4CP had a Condenser No.
102 fitted. Made by Ericsson. Diagram dated 1932.
N8480 - No. 4CP.
N8480A - No. 4CN. Dimensions:-
Case - CN & CP - 6.1" x 4.3" x 7.1".
Base - CO - 4" x 3.5" x 0.3".
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| Generator No. 5E Four magnet
generator of 200ohms.
Includes a Handle, Generator No. 12.
Connection code O.
Diagram - TL707.
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| Generator No. 5EN Four magnet
generator of 200ohms in a wooden case.
Includes a Handle, Generator No. 12.
Connection code O.
Diagram - TL707.
Dimensions - 11.5" x 7.4" x 5.75".
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| Generator No. 8A Four magnet
generator of 400ohms.
Includes a Handle, Generator No. 16 (Mark 2010) or 13 (Mark 234).
Connection code K.
Diagram - TL707.
Superseded Generator No's 2A, 3A and 20A. |
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| Generator No. 9A Four magnet
generator of 500ohms.
Includes a Handle, Generator No. 16.
Connection code O.
Diagram - TL707.
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| Generator No. 12A Four magnet
generator of 500ohms.
Connection code P.
Diagram - TL707.
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| Generator No. 12AN Four magnet
generator of 500ohms.
Connection code P.
Diagram - TL707.
Dimensions - 8" x 7.75" x 5.1".
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| Generator No. 13F Five magnet
generator of 110ohms.
Connection code K.
Diagram - TL707.
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| Generator No. 13F Five magnet
generator of 110ohms in a wooden case.
Connection code K.
Diagram - TL707.
Dimensions - 10" x 7.25" x 6.25".
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| Generator No. 15A Five magnet
generator of 500hms.
Connection code F.
Diagram - TL707.
Dimensions - 10" x 7.25" x 6.25".
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| Generator No. 15A Five magnet
generator of 500hms. Fixed to a base plate and fitted in
switchboards
Connection code F.
Diagram - TL707.
Dimensions:-
AN, AO & AP - 5.5" x 4.25".
AQ - 6.3" x 4.1".
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| Generator No. 20A Five magnet
generator of 1500hms.
Includes a Handle, Generator No. 1 (Mark 234) or 16 (Mark 2013).
Connection code D or F.
Diagram - TL707.
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| Generator No. 23A Four magnet
generator of 500ohms.
Connection code C.
Diagram - TL707.
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| Generator No. 24A Four magnet
generator of 500ohms.
Connection code M.
Diagram - TL707.
Used in Telephone No's 89 and 104.
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| Generator No. 26A Universal
generator ETL Part Number N4649.
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| Generator No. 26AN Desk top
generator - click here for more information
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| Generator No. 26AP Desk top
generator - click here for more information
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