英语翻译电压比较器是集成运放非线性应用电路,它将一个模拟量电压信号和一个参考电压相比较,在二者幅度相等的附近,输出电压将

The voltage comparator is the integration transports puts thenon-linear application electric circuit,it compares a simulationquantity voltage signal and a reference voltage,in two scope equalneighbor,the output voltage will have the jump,correspondingly willoutput the high level or the low level.The comparator may compose thenon-sinusoidal wave form transfer network and apply to domain and soon simulation and digital signal transformation.
The commonly used voltage comparator has the zero comparator,has hadthe sluggish characteristic zero comparator,double has limited thecomparator (to call window comparator) and so on.
1st,zero comparator
Electric circuit like chart 10 - 1 shows for adds the limitercircuit the zero comparator,DZ is the restriction 稳压管.Thesignal from transports the opposition input end input which puts,thereference voltage is zero,from synchronism end input.When Ui > 0,outputs UO = - (UZ+UD),when Ui < 0,Uo = + (UZ+UD).Its voltagetransmission characteristic like chart 10 - 1 (b) shows.
Crosses the zero comparator structure simply,sensitivity high,butthe antijamming ability is bad.
2nd,sluggish comparator
Chart 10 - 2 for has the sluggish characteristic zerocomparator
Like chart 10 - 2 show,directs a resistance differentialpressure regeneration leg from the out-port to the synchronism inputend,if the uo change condition,∑ also along with the changeelectric potential,enable the zero spot to leave the homing position.When uo is (records makes U+),then after ui > U ∑,uo namely byvaries directly negative (records makes U-),this time U ∑ becomes -U ∑.Therefore only when ui drops to - U ∑ below,can cause uo torise again once again U+,thereupon appears the sluggishcharacteristic which the chart 10-2 (b) center shows.- U ∑ iscalled the difference with the U ∑ difference.Changes R2 the valueto be allowed to change the difference the size.

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