L. M. ERICSSON
TELEPHONES AC 500 & AC 540

TELEPHONE - TABLE
Magneto telephone

AC 500 and AC 540
MICRO-TELEPHONE. RE 1004 resting on a cradle switch with cord RS 6010, flexible cable RS 9620 (Old No. 2260) and terminal block with disc protector.

GENERATOR. For type, number of magnets, and line resistance through which they ring, see table below.

RINGER. For resistance see table below.

The base, sides, and top-plate of these telephones are made of black enamelled steel.

The terminals are all enclosed.

If required, and without extra cost, we supply these types with case enamelled to match walnut, and at an extra cost, we can supply them with two generator handles.

Overall dimensions 11.9 x 9.5 x 5.9 inches.

Type	Generator Type	No. of Magnets	Line Resistance	Ringer Resistance	Weigh lbs.
AC 500	RH 3230	3	20,000	300	11.9
AC 540	RH 5502	5	25,000	2000	13.6

Telephone AC 540 is provided with a press button for cutting out the ringer coils and short circuiting the induction coil, the button to be pressed down while ringing.

If specially required, we can supply this telephone without the press button, but with the connections so arranged that the ringer is cut out when the generator is operated, and in this case, no press button is provided.

Taken from the Ericsson Telephone Catalogue 1912

See also AC 541.

AC 540