Using KEMET Analog Flame Sensors Dealing with Analog Circuits
■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.
|
[ Flame detector ] |
|
|
Application note & Design Guide |
|
|
|
|
Please see the document for details |
|
|
|
|
|
|
|
|
|
|
|
English Chinese Chinese and English Japanese |
|
|
02 June 2021 |
|
|
01 |
|
|
|
|
|
228 KB |
- +1 Like
- Add to Favorites
Recommend
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
