Special Features:

Vibrator type; output data: 65v, 0.075 amp, 20 cycles; cased steel; operating pwr rqmt 24v DC 5-1/2 in. X 8 in. X 9 in. O/a dim.; special features: self-starting vibrator, hermetically sealed, vibrator and transformer treated w/moisture and fungus resistant varnish; jcens id data, ringing inverter type no. Ta-46/ft, ta-46a/ft and ta-46b/ft; for general purpose use

Properties:

An electrically operated vibrator and/or rectifier type of ringing generating mechanism, which is the primary source of ringing current for use in telephone switchboards and central offices to operate telephone ringers and switchboard signals. See also generator, ringing, machine.