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