Figure 6-5.--Schematic diagram of the type G (version 1) telephone set

RINGER.-- A gong and clapper-type ringer is

control, which is an adjusting screw. By using a

screwdriver, you can access the dimmer control

used in the telephone set to alert personnel of an

through a cutout provided in the cover. The lamp and

incoming call. The ringer circuit (fig. 6-5) is a basic

lamp dimmer control circuit (fig. 6-5) is a basic dc

ac circuit where 75 to 110 volts ac, 20 Hz is applied

circuit where dc voltage is applied to the telephone set

to terminals 3 and 4 of the telephone set terminal

terminal board on terminals 5 and 6. Terminals 4 and

board. Capacitor C4, located in the transmission

6 will be connected to lead JJ9 of the ship's cable. The

network, tunes the ringer and blocks dc voltage.

voltage is extended to the lamp and lamp dimmer

The ringer can be connected to the telephone line

control circuit through a pair of hookswitch contacts

for one-party (private-line) service or two-party

that close when the handset is removed from the

(party-line) service (fig. 6-5). For one-party service,

handset holder.

Figure 6-5.--Schematic diagram of the type G (version 1) telephone set

6-6