Datasheet4U Logo Datasheet4U.com

BL1240 - Low current consumption

General 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.

Key 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.

📥 Download Datasheet

Datasheet Details

Part number BL1240
Manufacturer SHANGHAI BELLING
File Size 174.50 KB
Description Low current consumption
Datasheet download datasheet BL1240 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
BL1208H 10BIT 5MSPS ADC Samsung
BL125-09RL FPC / FFC Connector SCG
BL125-11RL FPC / FFC Connector SCG
BL125-13RL FPC / FFC Connector SCG
BL125-15RL FPC / FFC Connector SCG

Other Datasheets by SHANGHAI BELLING

Part Number Description
BL1062 Low Voltage Transmission Circuits
BL1062A Low Voltage Transmission Circuits
BL1062A1 Low voltage transmission
BL1085 3A Bipolar Linear Regulator
BL1101N CMOS gate

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 loud-speaker BL1240 can simply use a decoupling capacitor, thus eliminating the usual transformer.