|
TELEPHONE - WALL
FOR USE ON MAGNETO CALL AND CLEAR SYSTEMS GIVING THE HIGHEST GRADE
SERVICE UP TO THE MOST EXTREME CONDITIONS
AB 590
 CASE WORK
Polished walnut, constructed to hold the speaking battery of 2 cells, either
Leclanche or
dry.
MICRO-TELEPHONE
L.B. hand-set, with suspension loop for hanging on hook switch. Fitted with with 3 ft. 4
way cord.
GENERATOR
4-magnet or 5-magnet type. These generators will operate the ringer satisfactorily through
a line resistance of 30,000 ohms.
RINGER
For resistance see table below.
DIMENSIONS
Height 28.5 inches, Width 13.4 inches, depth 9.75 inches.
BATTERY COMPARTMENT
To take two cells up to maximum dimensions of 3.75 inches x 3.75 x 8 inches in height, for
each cell.
| Type |
No. of magnets |
Ringer Resistance |
Circuit Type |
Weight |
| AB 530 |
4 |
300 |
Series |
19.2 |
| AB 535 |
4 |
1000 |
Bridging |
19.2 |
| AB 535G |
4 |
1000 |
Bridging |
19.2 |
| AB 590 |
5 |
2000 |
Bridging |
20.25 |
| AB 590G |
5 |
2000 |
Bridging |
20.25 |
Telephones AB 590 and AB. 590G are for use on very heavy bridging circuits.
Telephones AB 530, AB 535 and AB 590 are supplied with push button to cut out the
ringer coils and short circuit the induction coil, so as to cut out the home bell when
ringing out, and also to give increased reception efficiency during conversation.
Originally numbered as the Telephone No. 345.
See ATCS Article on the Commonwealth Ericsson
In both the 1905 and 1912 Ericsson Telephone Catalogue
|
