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《Experimental Technology and Management》 2012-03
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Experimental study of voltage comparator

Zhou Huanyin,Lü Ziyong,Ma Guohua,Hu Jiewei(Department of Nuclear Defense,College of Chemical Defense,Beijing 102205,China)  
The oscillation signal is often transformed to pulse signal based on integrated operational amplifier circuit when its frequency is measured.The zero-crossing comparator is widely used because the structure and principle of this circuit are simplest.However,most students make mistakes in the experiment and do not know why they make the mistakes.Zero-crossing comparator's anti-jamming is very weak,which always leads to mistakes.The problem of voltage comparator is analyzed by means of simulation based on EWB.The reason of the mistakes is found out,and the way of solving the mistakes is pointed out.
【CateGory Index】： TM933.214
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