Using KEMET Analog Flame Sensors Dealing with Analog Circuits

PublishTime：2021-10-27

●INTRODUCTION:
■General IR flame detectors must have a long detection distance.
■To detect flames at a long distance the amplifier gain must be extremely high.
■To reduce signal to noise ratios within the circuit, it is common practice to use multiple amplifiers rather than just a single amplifier with high gain. Also, the use of multiple amplifier circuits allows signal conditioning to be applied.
■If the signal conditioning takes the form of a Bandpass filter.The Bandpass filter conditions the output signal from the Flame detector, so that each stage of the amplifier ONLY amplifies the signal of interest and not amplifies the surrounding electrical noise. In this way we are able to reduce the signal to noise ratio (SNR) of the circuit while also applying a high gain to the electrical signal.
■This application note explains how to calculate the gain and flicker frequency of the band pass filter circuit.

Brand of Product：	KEMET
Part#：
Product Category：	IR flame detectors amplifier circuits 、 circuits More
Application：	[ Flame detector ] More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	02 June 2021
Version Number：	01
Data Encoding：
Data Size：	228 KB

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Integrated Circuits