HONEYWELL DCS卡件 HONEYWELL DCS 51304477-100 /MU-TAMR02 /LLMUX 51304477100 #WM06
HONEYWELL DCS卡件 HONEYWELL DCS 51304477-100 /MU-TAMR02 /LLMUX 51304477100 #WM06
HONEYWELL DCS卡件 HONEYWELL DCS 51304477-100 /MU-TAMR02 /LLMUX 51304477100 #WM06
一般理解傳感器是將一種物理量經(jīng)過電路轉(zhuǎn)換成一種能以另外一種直觀的可表達的物理量的描述。比如轉(zhuǎn)換成僅依賴于此測物理量的較高的電壓電流等信號，再顯示出來。因此需要注意幾點：
1、 一般所測得的物理量是非常小的，通常還帶有作為傳感器物理轉(zhuǎn)換元件固有的轉(zhuǎn)換噪聲。比如傳感器在1被放大倍率下的信號強度為0.1~1uV，此時的背景噪聲信號也有這么大的水平，甚至于將其湮滅。如何將有用信號盡量取出并且壓低噪聲是傳感器設(shè)計的首要解決的問題。
2、傳感器電路一定要簡單精煉。設(shè)想具有3級放大電路的，帶有2級有源濾波器的放大回路，放大了信號的同時也將噪聲放大了，如果噪聲不是明顯偏離有用信號頻譜，則無論怎樣濾波兩者同時放大，結(jié)果信噪比沒有提高。因此傳感器電路一定要精煉簡約。能省1只電阻或電容就一定要將它去掉。這一點是許多設(shè)計傳感器的工程師們?nèi)菀缀雎缘膯栴}。已知的情況是，傳感器電路隨著噪聲的問題困擾，電路越修改越復(fù)雜，成為怪圈。
3.、功耗問題。傳感器通常在后續(xù)電路的前端，有可能需要較長的引線連接。當傳感器功耗較大時引線的連接將會所有的無謂噪聲以及電源噪聲引入使得后續(xù)電路愈發(fā)難以設(shè)計。在夠用的情況小如何降低功耗也是一個不小的考驗。
4、元器件的選用和電源回路。元器件的選用一定要夠用為好，只要器件指標在需要的范圍之內(nèi)就可以了，余下的就是電路設(shè)計問題。（http://www.diangon。。ｃｏｍ版權(quán)所有）電源是傳感器電路設(shè)計過程一定要遇到的難題，不要追求無法達到的電源指標，而選擇一款帶有較好的共模抑制比的運放，采用差分放大電路設(shè)計可能zui普通的開關(guān)電源以及器件就能滿足你的要求。電源的退偶一定要可靠設(shè)計，并且遵循器件手冊的要求，寧多勿少。
APPLIED MATERIALS 0010-10957 ASSY DRIVE FC Z P5000 W/VITON
APPLIED MATERIALS 0010-10957 ASSY DRIVE FC Z P5000 W/VITON
APPLIED MATERIALS 0010-10973 ASSEMBLY,H.O.T.DETECTOR MOD
APPLIED MATERIALS 0010-10980 ASSY, TOP LID, RPS
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APPLIED MATERIALS 0010-11000 PCB, 8330 ETCHER
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APPLIED MATERIALS 0010-13753 ASSEMBLY, 300MM MAINFRAME WAFER SENSOR
APPLIED MATERIALS 0010-13912 ASSY, VGA MONITOR STAND ALONE
APPLIED MATERIALS 0010-13943 SO/STLHEAD HEX HOSE 75 FT
APPLIED MATERIALS 0010-14017 BAYONET SKT QTZ HANGER ASSY
APPLIED MATERIALS 0010-15177 SHEILD ASSEMBLY PIN LIFT 200MM ICLN
APPLIED MATERIALS 0010-17004 CAGE ASSY FL SW ELEC
APPLIED MATERIALS 0010-18140 TOP COIL ASSY HDP CVD
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APPLIED MATERIALS 0010-19223 DISPENSE ARM ASSEMBLY,300MM TEMPEST
APPLIED MATERIALS 0010-20003 DIGITAL I/O BOARD
APPLIED MATERIALS 0010-20021 ASSY, VALVE, XFER, SLIT
APPLIED MATERIALS 0010-20030 TRANSFER ROBOT ASSY
APPLIED MATERIALS 0010-20031 ASSY,5' HEAThR,VVID CHMBR
APPLIED MATERIALS 0010-20098 KAISER POWER SUPPLY, CHASSIS ASSY, W/SHIELD
APPLIED MATERIALS 0010-20115 LID ASY,SHIELD TREATMENT 5/6 INCH
APPLIED MATERIALS 0010-20127 LID ASSY, SHIELD TREATMENT, 8"
APPLIED MATERIALS 0010-20128 BLADE ASSY 5"BUFFER
APPLIED MATERIALS 0010-20130 BLADE ASSY. BUFFER
APPLIED MATERIALS 0010-20142 THRU WALL SKINS OPTION: 1.5-2.5" THICK
APPLIED MATERIALS 0010-20161 ASSY CONTROLLER EXHAUST FAN
APPLIED MATERIALS 0010-20163 CHAMBER SHIELD
APPLIED MATERIALS 0010-20163 CHAMBER SHIELD
APPLIED MATERIALS 0010-20238 KIT, LIFT ASSY
APPLIED MATERIALS 0010-20238 KIT, LIFT ASSY
APPLIED MATERIALS 0010-20406 ASSYDETECTOR,LEFT
APPLIED MATERIALS 0010-20407 DETECTOR ASSY,LLA ,RIGHT
APPLIED MATERIALS 0010-20441 RF MATCH NETWORK, 6" PVD, 60 MHZ
APPLIED MATERIALS 0010-20442 ASSY, 8" RF MATCH
APPLIED MATERIALS 0010-20462 ASSY CASSETTE CLAMPING 5200 NB LL
APPLIED MATERIALS 0010-20524 ASSY 8" RF MATCH
APPLIED MATERIALS 0010-20554 CASSETTE CLAMPING (PA200-80MG)
APPLIED MATERIALS 0010-20722 ASSY BRKT FL METER NESLAB (NEW)
APPLIED MATERIALS 0010-20862 ASSY PNEU EXT ROBOT
APPLIED MATERIALS 0010-20932 ASSY ALL MOTOR
APPLIED MATERIALS 0010-20990 ASSY INTLK SWITCH PRECLEAN COVERS
APPLIED MATERIALS 0010-20991 ASSY, INTLK TOP, PRECLEAN COVER
APPLIED MATERIALS 0010-20991 ASSY, INTLK TOP, PRECLEAN COVER
APPLIED MATERIALS 0010-21259 ASSY THERMAL SWITCH 55C & 75C
APPLIED MATERIALS 0010-21259 ASSY THERMAL SWITCH 55C & 75C
APPLIED MATERIALS 0010-21743 ASSY THERMAL SWITCH PVD CHAMB
APPLIED MATERIALS 0010-22271 INTERLOCK ASSY FAN ROTATION EXZ
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