產(chǎn)品詳情
二極管從正向?qū)ǖ浇刂褂幸粋€反向恢復(fù)過程在上圖所示的硅二極管電路中加入一個如下圖所示的輸入電壓。在0―t1時間內(nèi),輸入為+VF,二極管導(dǎo)通,電路中有電流流通。設(shè)VD為二極管正向壓降(硅管為0.7V左右),當(dāng)VF遠(yuǎn)大于VD時,VD可略去不計,則在t1時,V1突然從+VF變?yōu)?VR。在理想情況下,二極管將立刻轉(zhuǎn)為截止,電路中應(yīng)只有很小的反向電流。但實際情況是,二極管并不立刻截止,而是先由正向的IF變到一個很大的反向電流IR=VR/RL,這個電流維持一段時間tS后才開始逐漸下降,再經(jīng)過tt后,下降到一個很小的數(shù)值0.1IR,這時二極管才進(jìn)人反向截止?fàn)顟B(tài),如下圖所示。
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小強工控 CARLO GAVAZZI UA18ESD03NPM1TI
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KEB D1F5S1D-33EA
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RIEGLER 195.1410-2
DADCO U.0400.015.TO
AECO SIM000006 SMF12-C3 NPN NC LC10
HYDAC 1297337 2600 R 005 BN4HC/-B6-SFREE
Gino GINO.3PP1336-0DZ-TG80013-002
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FHF92230120 ExII-Signalhupe dGH 21 230 VAC Geh?use schwarz, GOST
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norelem 08910-A1800X16
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Maximator M037D-02 泵
Beck 901.77.111L4 壓力傳感器
BERNSTEIN 6012991099 SRM-A2Z/U1Z-LU-175-E Interruttore a fune
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AECO I08000023 SI8-C1 PNP NC S
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hawo GmbH 1.672.03 HpL ISZ 450 o.WrNG 200 20V
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Settima Meccanica und Flow Mechanisms GMBH GR70 SMT16B 600L RF2. 螺桿泵
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DOLD 45532 AN9843.82/011 3AC50/60HZ 690V 1-20S
ALLMATIC hydraulisch backenbr 125 art3060/125 NR 6921188000655 工件夾具
03677800 HDP30.34S0-32S1-LGF/GE-N
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SIEMENS 6DD1684-0GD0 模塊
automationdirect AR22F5L-10L3RZA Thumbnail
03573196 REAR SECTION KP30.34D*- * *-LED/EB- *M4-N-P-BZ
IPR 11850006;EC-38-R;ROBOTERSEITE
PLP20.25S0-12E2-LEB/EA-N-EL FS
03716570 HDP30.43D*- * *-LMC/MC- *M0-N-P
Honsberg WR1-020GKW
KUEBLER 8.0000.1101.1010 附件
hydac 0330 D 003 BH4HC 濾芯
68260797 PLP20.14/20.11,2/20.11,2 D/FS-EL
LIKA編碼器SFA-2000-GA-1000-M0.5 SUPPORTO A FILO
REXROTH LFR16D-1X/F 1.087 1 818 509 246
019984M6 PLP20.6,3D0-31S1-POC/OC-N-EL-FS
CIRCLE SEAL K5120T-4M
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MD MICRODETECTORS傳感器MDI38G 1036
Eaton Electric GmbH DILM150-XHI31 277949 接觸器
ALRE IKF1M/1/4-20/250
ALRE JET-40
02013705 REAR SECTION PLP20.11,2S0-****-LEA/EA-N-P FS-AV
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03579464 FRONT SECTION KP30.51S0-84E4-LED/ED-65M4-N-A-BZ
MD MICRODETECTORS傳感器MDI63D 1858
小強工控 CARLO GAVAZZI PS21L-AT20LB-T00
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DEMAG CRANES ZBR 180 A12/2 B140
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RIEGLER 280.623
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RIEGLER 227.55-29,5
AB 1769-ECR A
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MD MICRODETECTORS傳感器MDI58B 2150
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VIVOIL X1P3442DBBA
FEAS Artikel-Nr.:581124
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GEMU 55425D19511
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IFM ref.IN5224 + E17327
RIEGLER WEVR125SST
RIEGLER TVR148SST
RIEGLER 11.655
dl-systeme 0-2bar 傳
stego加熱器CS 130, 1200 W
MICRO-EPSILON WDS-2500-P85-BH-PB傳感器
MD MICRODETECTORS傳感器MDI63A 1311
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MD MICRODETECTORS傳感器MDI38F 2185
STOMMEL+VOOS (A11)SD326DU25S2-Y
RIEGLER 88.028-R
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RIEGLER 4009
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WIELAND 70.353.1635.1
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03802110 HDP35100D0-06S8-LMF/ME-60F0-N-A(U-30)
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RIEGLER 252.31
FP30.51D0-16Z0-LGF/GF-N (2)
kapsto GPN 351 I 40
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BERNSTEIN 6490653010 MAK-5336-3
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RIEGLER 568-6
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03590111 PLP30.38D0-04S5-LOG/OF-N
中發(fā)工業(yè)zenib VSP-5012報價
θM為產(chǎn)生TM的角度。兩相PM型或兩相HB型的步距角一致。根據(jù)上式,以及《步進(jìn)電機的基本特性:靜態(tài)、動態(tài)、暫態(tài)轉(zhuǎn)矩特性》一問中的式:θL=(2θM/π)arcsin(TL/TM)得知,負(fù)載轉(zhuǎn)矩TL決定位移角θL的大小。由于步進(jìn)電機的負(fù)載決定角位置,因此一定負(fù)載轉(zhuǎn)矩TL時,θL越小,角度精度越高。因此希望步進(jìn)電機靜態(tài)轉(zhuǎn)矩(保持轉(zhuǎn)矩)TM要大。連續(xù)測量TL與θL,就可以得到靜態(tài)轉(zhuǎn)矩特性曲線。步進(jìn)電機的靜態(tài)轉(zhuǎn)矩特性,可以1相激磁,也可以2相激磁,A相與B相1相激磁轉(zhuǎn)矩公式如下式所示,其中角度θ為電氣角。
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BARKSDALE UNS1000-VA/T1-KL6-VA27 Art.Nr./Part No.:0122-032
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PCH PCH 1275/CHF8023 ATEX ---
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AFAG 11004995
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Ghisalba GHOPC-600B AAV66871
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CIRCLE SEAL SV23B2NO4P43
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Funke TPL01-L-22-11熱交換器 E+H 80F80-AD2SAACLBBAA CIRCLE SEAL 232B-4PP-0.15 RIEGLER KT 19 S 美國NASON壓力開關(guān)(SM-1B-6F/811)BURKERT電磁閥178267 中發(fā)工業(yè)進(jìn)口備件 VERSA CGG-4232-NB1-PC-A240 220VACPENNY+GILES電位計KX15884CE Sls320/600/C/66/10/P BAUMULLER BM4412-STO-01200-03OMRON E2E-X3D18 5M
中發(fā)工業(yè)zenib VSP-5012報價
F點為輸出端。圖八CD4069振蕩電路具體應(yīng)用電路1.4069振蕩電路應(yīng)用之一,三組振蕩電路互相調(diào)制就可以發(fā)出高低快慢周期性變化的音調(diào),聲音酷似警笛聲,具體元件參數(shù)見下表。圖九CD4069制作的警笛發(fā)生器警笛發(fā)生器元件表2.CD4069組成的逆變器,輸出振蕩信號通過三極管放大,控制MOS管的導(dǎo)通與截止,從而在輸出端為220v電壓。圖十CD4069制作的逆變器3.CD4069組成的水位指示器,在水不滿時輸入高電位,輸出低電位,對應(yīng)的led燈不亮,當(dāng)水位上升時,電位降低,輸出高電位,對應(yīng)的led燈發(fā)亮,隨著水位的上升,led燈依次發(fā)亮,反映了水位的高低情況。