The scheme for switching on sound signals is shown in fig. 7-32.
Pic. 7-31. Sound signal: 1 - membrane; 2 - fixed contact holder; 3 - diffuser; 4 - ring; 5 - moving contact plate; 6 - body; 7 - core; 8 - adjusting screw; 9 - adjusting screw spring; 10 - bridge; 11 - signal mounting plate; 12 - yoke; 13 - anchor
Pic. 7-32. Scheme for switching on sound signals: 1 - sound signals; 2 - switch of sound signals. 3 - socket for a portable lamp; 4 - fuse block; 5 - generator; 6 - battery