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BL1240

Part Number	BL1240
Manufacturer	SHANGHAI BELLING
Description	Low current consumption
Published	Dec 20, 2006
Detailed Description	www.DataSheet4U.com BL1240 ELECTRONIC TWO – TONE RINGER Features Low current consumption, in order to allow the paralle...
Datasheet	BL1240 PDF File

Overview

www.
DataSheet4U.
com BL1240 ELECTRONIC TWO – TONE RINGER Features Low current consumption, in order to allow the parallel operation of 4 devices.
Integrated rectifier bridge with zener diodes to protect against overvoltages.
Little external circuitry.
Tone and switching frequencies adjustable by external components.
Integrated voltage and current hysteresis.
Description BL1240 is a monolithic integrated circuit designed to repace mechanical bell in telephone sets in connection with an electro-acoustical converter.
It can drive directly a piezoceramic converter (buzzer) or a dynamic loudspeaker.
The output current capability of BL1240 is higher than standard ringer.
For driving a dynamic lo...

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