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CS235

Part Number	CS235
Manufacturer	Cherry Semiconductor Corporation
Description	System Photoelectric Smoke Detector
Published	Mar 23, 2005
Detailed Description	CS235 CS235 System Photoelectric Smoke Detector Description The CS235 System Smoke Detector is a photo electric type wi...
Datasheet	CS235 PDF File

Overview

CS235 CS235 System Photoelectric Smoke Detector Description The CS235 System Smoke Detector is a photo electric type with a pulsed infrared LED as the light source and a silicon photodiode as the light detector.
The CS235 IC, along with passive external components, controls the system timing and signal processing.
Low average current is attained by pulsing the system once every 10 seconds for 20 milliseconds.
Bias is applied to the signal processing circuitry for this time interval.
During the second half of the pulse, the last 10 milliseconds, the IR LED is pulsed and the unit samples for an alarm level smoke condition.
After the first alarm level signal the sample rate increases to a two ...

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