For analog multiplier , the basic principles were analyzed and input , output circuits were designed 對(duì)于模擬乘法器,分析了其工作原理,并設(shè)計(jì)其輸入輸出級(jí)使其適合設(shè)計(jì)要求。
Based on the coherent modulation model , doppler information is obtained by using ad633 analog multiplier and active low pass filter ; 3 以相干檢波一般模型為基礎(chǔ),采用ad633模擬乘法器和有源低通濾波器實(shí)現(xiàn)了對(duì)多卜勒信息的提??; 3
Many international companies have put their pfc chips on the markets , such as mc33262 , mc34262 , l6561 , l6562 , ml4812 etc . in this paper , we studied on critical current mode active power factor correction technology , and did a detailed analysis and design on voltage reference circuit and analog multiplier circuit 國(guó)際上已經(jīng)出現(xiàn)了一些有源功率因數(shù)校正芯片,如onsemi公司的mc33262 、 mc34262 , st公司的l6561 、 l6562 , microlinear公司的ml4812等產(chǎn)品。本文研究了有源功率因數(shù)校正技術(shù)中的臨界導(dǎo)通模式的基本原理,并對(duì)其中的電壓基準(zhǔn)源和模擬乘法器做了詳細(xì)的分析和設(shè)計(jì)。
At present , the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory , these methods all require some transform and quick , real - time calculating , so high precision analog multipliers or high speed dsp chip with fast a / d are needed , this results in complex circuit and high cost , which have restricted the development of apf 目前畸變電流檢測(cè)常用的方法有頻域法的fft和基于瞬時(shí)無(wú)功理論的畸變電流檢測(cè)法。這些方法均有一定的變換,需要快速、實(shí)時(shí)運(yùn)算,因此必須使用高速的數(shù)字微處理器和高性能a / d轉(zhuǎn)換器,這必將大大提高系統(tǒng)成本,使得電路結(jié)構(gòu)復(fù)雜,在一定程度上限制了有源濾波器的發(fā)展。
In electronics, an analog multiplier is a device which takes two analog signals and produces an output which is their product. Such circuits can be used to implement related functions such as squares (apply same signal to both inputs), and square roots.