The role of the amplifier in the gas chromatograph FID circuit system

Time:2018/11/09 Pageviews:4 Share:

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The role of the amplifier in the gas chromatograph FID circuit system is to amplify the small signal to a large enough size for ease of use. In the gas chromatograph electronic circuit, the basic principle of the amplifier is to use a bipolar transistor to form an amplifier. According to different connection methods, it can be mainly divided into a common base amplifying circuit, a common collector amplifying circuit and a common emitter amplifying circuit. In the gas chromatograph application, it can not be directly used, and a lot of peripheral components need to be added, which makes the working point of the amplifier more troublesome to adjust, so in the practical application, an integrated operational amplifier is used to form an amplifying circuit.

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