BUZZER No. 32


 
Buzzer No. 32A-1 Buzzer No. 32A-2  
     
 
Buzzer No. 32C-3 Buzzer No. 32C-3/2  

Single coil buzzer used in 700 type telephones.
No. 32A - 55 ohms & 65ma (Used on Planset N625).
No. 32A-1 - 55 ohms & 65ma (Used on Telephone No. 706 & 710).
No. 32A-2 - 55 ohms & 65ma (Used on Telephone 711).
No. 32B - 1K ohms & 15ma (Used on LST No. 3).
No. 32C-3 - 138 ohms & 40ma
No. 32C-3/2 - electronic buzzer

Buzzers with a suffix -1, -2 or -3 have a resistor (Resister, Carbon No. 26GC 270ohm) and capacitor (Capacitor 0.1uf) wired in series across the contact points.

Buzzer Suffix
-1 - Used on Telephones No. 706, 710 and Bellset No. 48 (fixes on top of one of the bell gongs).
-2 - Used on Telephone No. 711 (fixes to the metal chassis, behind the regulator).
-3 - Used on Telephones No. 740, 741, 746 and Bellset No. 50 (fixes on the switch hook upstand).

Circuit Diagram - N647 and SA/SAW10039.

Drawings - 91736 (Mark 1), 91747, 91917 and 92929.

Specification - S829.

Buzzer No. 32C-3/2 fitted to a 74X type telephone

 

 

 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: November 07, 2023

FM