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SC1240

Part Number	SC1240
Manufacturer	Shaoxing Silicore Technology
Description	Electronic Two-Tone Ringer
Published	Dec 29, 2005
Detailed Description	w w telephone sets in connection with an t e ELECTRONIC TWO-TONE RINGER SC1240 e h S a DESCRIPTION Outline Drawing t a...
Datasheet	SC1240 PDF File

Overview

w w telephone sets in connection with an t e ELECTRONIC TWO-TONE RINGER SC1240 e h S a DESCRIPTION Outline Drawing t a The SC1240 are monolithic integrated circuits D .
designed to replace the mechanical bell in w electro-acoustical converter.
The devices can drive directly a piezocera mic converter (buzzer).
The two tone frequencies generated are switched by an internal oscillator in a fast sequence and made audible across an ou tput a mplifier in the loudspeaker, both tone frequ encies 4U m o .
c Silicore and the switching frequency can be externally adjusted.
The signal and the circuit is designed so that noise on th e line or variations of the ringing signal cannot affect correct op...

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