中發(fā)工業(yè)zenib VSP-5012報(bào)價(jià)
二極管從正向?qū)ǖ浇刂褂幸粋€(gè)反向恢復(fù)過(guò)程在上圖所示的硅二極管電路中加入一個(gè)如下圖所示的輸入電壓。在0―t1時(shí)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(shí)，VD可略去不計(jì)，則在t1時(shí)，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(shí)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(gè)很大的反向電流IR=VR／RL，這個(gè)電流維持一段時(shí)間tS后才開(kāi)始逐漸下降，再經(jīng)過(guò)tt后，下降到一個(gè)很小的數(shù)值0.1IR，這時(shí)二極管才進(jìn)人反向截止?fàn)顟B(tài)，如下圖所示。
美國(guó)PNEUMADYNE氣動(dòng)閥, 氣動(dòng)開(kāi)關(guān)(H11-31-16)
小強(qiáng)工控 CARLO GAVAZZI UA18ESD03NPM1TI
035717DL FRONT SECTION KP30.73D0-84E4-LGG/GF-81N7-N-A
Euchner TZ1RE024BHA-C1903 Nr.82096 自動(dòng)控制器
NORELEM NLM 02153-08036
abnox Spring 8169700 for 3095500
automationdirect UK1A-E9-0A Thumbnail
KEB D1F5S1D-33EA
意大利SOLDO SF70221-10X11A4回訊開(kāi)關(guān)
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
00376500 MOTOR PLM10.4 D0-81E1-LBA/BB-N
automationdirect G100M050MD-MC Thumbnail
FHF92230120 ExII-Signalhupe dGH 21 230 VAC Geh?use schwarz, GOST
STOEGRA SM 56.3.18J1.5 with Cable gland 電機(jī)
norelem 08910-A1800X16
BAR PKN-1/0-025-C078-06
HBM HLCBC 3/4400KG
TANDLER齒輪箱減速機(jī)A1-III
Maximator M037D-02 泵
Beck 901.77.111L4 壓力傳感器
BERNSTEIN 6012991099 SRM-A2Z/U1Z-LU-175-E Interruttore a fune
parker DX1-651-BL49 電磁閥
AECO I08000023 SI8-C1 PNP NC S
automationdirect TRD-NA128NWD
KOBOLD DRB-1300W8L442
TECHNOGR F3S-TGR-NLPC-21-M1J8
SELET傳感器B0382NCC3
automationdirect WG-262-010-H Thumbnail
06541242 LVP 75D-34S7-LMF/QD-N-RN-AS7/06 (296/1450)
MD MICRODETECTORS傳感器LS2ER/90-150M
Sera比例泵RF410.2-1100e/RK410.2-450e
automationdirect AF-323-D
GEMU 1257-000-Z-00-000-0101
automationdirect GS4-2030
Micronel C8025H24BPLB2-7
MD MICRODETECTORS傳感器MDI63A 342
RIEGLER 453.033
SELET傳感器SRP500-8
Beck 930.83.222511 16645-0007 壓力測(cè)試裝置
SELET傳感器OCV81/D2NNCC5
Mahle PI 4215-015 濾芯
automationdirect TJN3 Thumbnail
MD MICRODETECTORS傳感器MDI58F 2463
hawo GmbH 1.672.03 HpL ISZ 450 o.WrNG 200 20V
MD MICRODETECTORS傳感器MDI58B 897
MGV SPH1013-2440
LVP 75-RP0 AS5/04/PLP30.43-04S5-LGF/GF/30.34-LGF/GF D
Knick isolation P27000H1 隔離器
HEIDENHAIN 557677-03
Baumer IWRM 06U9501/S35 編碼器
PHD 11752988-02
Honsberg OMNI-P006RK015S 壓力變送器
BEI ID:01072-080
KOBOLD TRM-204.090.20GS.2.S1
PROXITRON
Settima Meccanica und Flow Mechanisms GMBH GR70 SMT16B 600L RF2. 螺桿泵
Honsberg MR1K-010GM030 流量計(jì)
MD MICRODETECTORS傳感器MDI58C 2857
automationdirect DVM-2BC2E-24D Thumbnail
AI-Tek Instruments BH1522-009 BH Series Bi-Directional Sensor
automationdirect LACP2-16T24L1 Thumbnail
03801440 HDP35.63D1-34S8-LME/MD-61G0-N-A
MD MICRODETECTORS傳感器BX10R/AD-HB70
小強(qiáng)工控 CARLO GAVAZZI PS42L-PS02L3-T00
MD MICRODETECTORS傳感器MDI63A 1786
SICK DD2-N85W20A2
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
小強(qiáng)工控 CARLO GAVAZZI DFB01CM24
CIRCLE SEAL 5162B-1MP
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
MD MICRODETECTORS傳感器AE6/AP-3A84
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
Turck WWAK3P2-5-SSP3/S90 Nr:8015252 接頭電纜
03579464 FRONT SECTION KP30.51S0-84E4-LED/ED-65M4-N-A-BZ
MD MICRODETECTORS傳感器MDI63D 1858
小強(qiáng)工控 CARLO GAVAZZI PS21L-AT20LB-T00
TECNOMORS LGE30NM
小強(qiáng)工控 CARLO GAVAZZI CTD8V15005AXXX
TR 111-00169 編碼器
DEMAG CRANES ZBR 180 A12/2 B140
02000614 PLP20.14D0-03S2-LEB/EA-N-EL-A FS
RIEGLER 280.623
heidenhain 323079-01 接口板
RIEGLER 227.55-29,5
AB 1769-ECR A
SELET傳感器K0122NCC5
MD MICRODETECTORS傳感器MDI63G 2966
MD MICRODETECTORS傳感器MDI58B 2150
小強(qiáng)工控 CARLO GAVAZZI MFTDINAV53DS
VIVOIL X1P3442DBBA
FEAS Artikel-Nr.:581124
MD MICRODETECTORS傳感器LS4ER/0A-050LK
GUTEKUNST彈簧D-117J ((EL=18 6))
BERNSTEIN 6021802189 GC-A2Z IW Finecorsa
automationdirect C18R-0N-2A Thumbnail
MD MICRODETECTORS傳感器MDI58B 2971
B&PLUS RS12T-422
MD MICRODETECTORS傳感器MDI58B 1356
balluff BOS 18M-PA-LD10-S4 Nr:BOS013H 光電開(kāi)關(guān)
SCHUNK GZB-S Φ20/Φ3
automationdirect WGA-30M-ACC2 Thumbnail
SELET傳感器K15G30PC
MD MICRODETECTORS傳感器MDI58C 1561
DA2D3110015/OS DM3403040-03/12 KA691025
VIVOIL X1R2061BBBF
風(fēng)機(jī) R11E-4530A-4T
SELET傳感器CC30200
Hetronik HC 510-OC-230-16 加熱模塊
MAXON減速機(jī)134168
GEMU 55425D19511
小強(qiáng)工控 CARLO GAVAZZI PS42L-BT11R1-T00
RIEGLER 704-CDE
小強(qiáng)工控 CARLO GAVAZZI PS21M-CT11BR-T00
VIVOIL X2U4701EOOA
LIKA編碼器I58-L-2000ZCP16R 2000PPR-RAD
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
MD MICRODETECTORS傳感器MDI38F 1184
IPD電源SRW-45-4009
ELOVIS ?SPEED-T-Box
LTK LBA_20X32X35 軸承
METARIS FD51-B20-15-15-B16
小強(qiáng)工控 CARLO GAVAZZI IBS04SF08M5NC
PMA STB55-5000-000 溫控器
automationdirect HT8HFYV3
UTILCELL MOD460
Norelem LLK 16.030 E3（M） ---
ELESA+GANTER GN 918.6-50-KV-L
MICROSONIC mic-25/D/M
MD MICRODETECTORS傳感器MDI38F 2185
STOMMEL+VOOS （A11）SD326DU25S2-Y
RIEGLER 88.028-R
EGE - P31427 IGMF 008 GOP
RIEGLER 4009
MD MICRODETECTORS傳感器MDI58F 1567
WIELAND 70.353.1635.1
JUMO 402055-000-459-450-502-20-601-36/000 壓力傳感器
03802110 HDP35100D0-06S8-LMF/ME-60F0-N-A(U-30)
RIEGLER 235.16-M
RIEGLER 252.31
FP30.51D0-16Z0-LGF/GF-N (2)
kapsto GPN 351 I 40
01999G3C INTERMEDIATE SECT. PLP20.16D0-****-LBE/BC-Z6-N-I FS
BERNSTEIN 6490653010 MAK-5336-3
SIEMENS 7ML5007-1AA00-2A 液位計(jì)
SELET傳感器OCV81/D1C3NOR
RIEGLER 568-6
SELET傳感器B01QM185NC
AECO I45000013 SI5-C0.8 PNP NC
76710500 HDP35125-04S5-98/KP20.8 D2
PLP10.3,15-81E1/10.1/10.1 D/FS-EL
FEIN ASW18-60PC（扭矩范圍15-50Nm）71126460000
79939710 FP30.27/30.27 S
Vickers KDG5V-7-2C180N100-X-M-U-H1-10 液壓閥
03590111 PLP30.38D0-04S5-LOG/OF-N
中發(fā)工業(yè)zenib VSP-5012報(bào)價(jià)
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(jī)的基本特性：靜態(tài)、動(dòng)態(tài)、暫態(tài)轉(zhuǎn)矩特性》一問(wèn)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(jī)的負(fù)載決定角位置，因此一定負(fù)載轉(zhuǎn)矩TL時(shí)，θL越小，角度精度越高。因此希望步進(jìn)電機(jī)靜態(tài)轉(zhuǎn)矩（保持轉(zhuǎn)矩）TM要大。連續(xù)測(cè)量TL與θL，就可以得到靜態(tài)轉(zhuǎn)矩特性曲線。步進(jìn)電機(jī)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。
ROLAND ELECTRONIC GmbH P42AGS 感應(yīng)傳感器
Murr 23102 自動(dòng)控制器
SELET傳感器B87G3010NSC
automationdirect TJN20
ETA 18-P10-Si 插座
MD MICRODETECTORS傳感器MDI38F 1737
BURSTER 8524-6050
MD MICRODETECTORS傳感器MDI58B 1104
小強(qiáng)工控 CARLO GAVAZZI PS21L-PT11PN-T00
小強(qiáng)工控 CARLO GAVAZZI APA-2
DOLD 18930 IL8800.14 DC48V
EA WT451405-ED620632
automationdirect ZL-D0-CBL8-1P Thumbnail
MD MICRODETECTORS傳感器SH2/E-2EIC
SELET傳感器SFM1121
ARCOS 25CA-50/30-0530/83油缸密封件
HARTING 9330102702 插頭
DOLD 32206 BA7864.82 AC/DC24V+AC220-240V
automationdirect AEM2G75X11-3
RIEGLER 252.08/2
FANTINI COSMI HR1710-HR1701
ROSS J3573D8012
79940755 FP40.63-06S8/40.63 S
CIRCLE SEAL HP559T1-2M
EDAG RF-06-25.01-02 滾壓頭附件
MD MICRODETECTORS傳感器MDI63D 14
automationdirect WG-206-040-D Thumbnail
DOLD 25030 MK3047/010 DC48V
小強(qiáng)工控 CARLO GAVAZZI PS21L-NT20W0-H00
Hummel 1097402550 插頭
AMTEC KISTLER 600-633-004
02000130 FRONT SECTION PLP20.11,2S0-82E2-LEA/EA-N-A FS
hedidenhain 376846-M1 編碼器
automationdirect SE-SW9U-ST
HOHNER 10.15289.50(H-16290-50) 編碼器
Econex 3/8" 0 - 40 Mbar Pressure Gauge
AFAG GREIF GMQ 20/P-RM16 G8.20.1601
SELET傳感器OCV81/CNNCC5
小強(qiáng)工控 CARLO GAVAZZI TV1X2110100V
67051510 PLP20.8/20.4-Z6 D/FS EL
Honsberg FW1-15GP006-1 , Art. Nr.. 951405358
HDP30.22-32-LME/MB/30.22-L/MB-M1 D
FEAS Artikel-Nr.:581312
BERNSTEIN 9806941000 Adattatore SimaticPro per giunti diritti RAL7016
STOBER MDS5075A/L
FINDER 094.91.3
NORELEM nlm 03325-05x16 GOUPILLE CYLINDRIQUE Dia.5 Longueur 16 Taraudee M3
MD MICRODETECTORS傳感器UK1A/G7-0ESY
DI-SORIC DCC12M10PSK-IBSL
embpapst W2S130-AA03-64 風(fēng)機(jī)
SELET傳感器ST51
automationdirect T3533411S
BARKSDALE 96211-BB2-T2-Z17 5A 125/250VAC 壓力：5.0~35 PSI
SAT Anlagentechnik GmbH 35037665 閥
IPD電源SRW-65-1005
FP30.51S0-16Z0-LGF/GF-81N5-N-A-(2)
RIEGLER 157 M-E
MD MICRODETECTORS傳感器MDI63D 2014
RIEGLER 850 F/S
PLP20.11,2-07S1-LGD/GD/20.6,3-LGD/GD S/FS-EL
MD MICRODETECTORS傳感器MDI58G 1154
automationdirect GCX1254-24 Thumbnail
Spieth MSW50.46（ M50×1.5-5H）
LAND M1 600/1600C-V
automationdirect E22NS81 Thumbnail
小強(qiáng)工控 CARLO GAVAZZI PS21L-AS11LO-T00
automationdirect AD-SSR640-AC-480A Thumbnail
DOLD 26903 BA9043 3/N AC50-400HZ 220/380V
DOLD 18073 AA9837.11 10-30HZ UH AC50/60HZ 110V
小強(qiáng)工控 CARLO GAVAZZI PS21L-AS02W1-H00
LIKA編碼器I58S-H-2048ZCU410R 2048PPR-RAD
hydac EDS348-5-016-000 壓力傳感器
DOLD 54050 MK7850N.82/200 AC/DC12-240V
HDP30.51-05/30.51 D
emgr ECS80G2-C1AA
TWK CRN66-8192 R 4096 D1 Z01 286897
MD MICRODETECTORS傳感器MDI58F 1430
automationdirect CWC012-01-30V18 Thumbnail
S+B VNS011 14AKEAR8P1.X
HELU M50*1.5；訂貨號(hào)93943
Hummel 1152200050 插頭
小強(qiáng)工控 CARLO GAVAZZI CTD9V6005AXXX
STAUBLI N00414414
EPIDOR DK101 70×60×12×13(HNBR) 521931
AI-Tek Instruments 70085-1010-408 Passive Speed Sensor
RIEGLER 229.03-12,0
MD MICRODETECTORS傳感器MDI63F 2572
EA MU310028-OD620652
Phoenix 712152 接線端子
CBI L459060
小強(qiáng)工控 CARLO GAVAZZI PS21M-CS11P8-T00
RIEGLER 517.306
automationdirect TRD-NH3-RZWD
HYDAC HDA4745-A-400-000 400BAR 8-30VDC
小強(qiáng)工控 CARLO GAVAZZI PS43L-PO11L3-M00
SIKA VKS05M0TRANE01 流量開(kāi)關(guān)
DOLD 59096 BA9040.12/60 3AC50/60HZ 400V
ATOS DHZO-TE-071-L5 閥
ROPEX RES407230V
Turck BI3-M12-AD4X 4405035 接近開(kāi)關(guān)
SELET傳感器K50E30V010C5
automationdirect HW-N4X4PB-22 Thumbnail
ROTEX 20901000002 聯(lián)軸器附件
小強(qiáng)工控 CARLO GAVAZZI ICS08S30N40M5NO
MD MICRODETECTORS傳感器MDI58F 413
ElmoRietschle ZS1093437
NORELEM NLM 03070-05
kapsto GPN 351 I 581
GRACE Grace R-3W-NPT150-NP *adapter
kapsto GPN 250 / 8
ELTRA EH88PE1024Z8/24L25X3PR
HYDAC 1270078
06541213 LVP 75S-06S7-LMF/QD-N-LS0-AS5/05
RIEGLER WEVM108SLST
FEAS Netzteil PSU500T24
VIVOIL X1U1612GIIA
69423500 PLP30.51-08/20.14/20.14/20.14 D/FS L
BERNSTEIN 6402042022 TK-42-CD Magnete
BARKSDALE UNS1000-VA/T1-KL6-VA27 Art.Nr./Part No.：0122-032
MD MICRODETECTORS傳感器MDI58C 1981
KUEBLER 8.9080.5512.1001 編碼器
MD MICRODETECTORS傳感器MDI58C 803
03571339 KP30.34DO-83E3-LED/EB-V-BZ
Manifold valve,電磁閥EST A010SP0045
MD MICRODETECTORS傳感器MDI63G 2951
PCH PCH 1275/CHF8023 ATEX ---
brinkmann 3LASE0AA-S00087 軸套
MD MICRODETECTORS傳感器MDI63A 2564
GEMU 88041123 600 25M 4 0101
Hilger u.kern Industrietechnik typ 400.25.94 壓力調(diào)節(jié)器
EMG BMI2.11.1
IPD電源DC2-70-2002
RIEGLER 213.33
RIEGLER 2401.3125
automationdirect SC18-LS110-3
Chinfa DRA240-24A 電源 現(xiàn)貨
heidenhain ID:557647-17 編碼器
PS15370進(jìn)口電磁閥UNIVER
03726244 HDP30.17S*- * *-LMC/MB-97N6-N-I
SEUSTER EGRTypII
SELET傳感器B02G122PSC
DOLD 52934 BC7936N.38 AC/DC24V+AC220-240V 10S
MTS RHM0075MP021S1G8100
03579346 KP30.51D0-A8K9-LED/EB-N-CSC
03571104 KP30.51S1-32S3-LOG/OF-N
FUNKE+HUSTER EL 101 D 界限開(kāi)關(guān)
69242992 PLP30.27/20.8-51/10.4 D/FS-L
automationdirect GS4-FAN-D0M
RIEGLER 243.49-N
automationdirect CD12M-0B-070-C1
VIVOIL X3M7231IEEF
06878095 FP30.51S0-19T1-LGF/GF-67N2-N-A
HAVER & BOECKER 200x50mm 300μm NO.523003 篩盤(pán)
cembre RF-F408 端子
小強(qiáng)工控 CARLO GAVAZZI PS42L-PS11R1-T00
AFAG 11004995
Rexroth 4WRDE25V1-350L-5X/6L24K9/WG152MR 閥
MD MICRODETECTORS傳感器UK1C/GN-1ASY
VESTA K32P1918
automationdirect BW125JAGU-3P125SB
JUMO TYP:701130/0253-001-02/205 245
02014022 FRONT SECTION PLP20.8D0-03S1-LBE/BC-N-EL-A FS
RIEGLER C 12 - S
Ghisalba GHOPC-600B AAV66871
BARKSDALE SW2000CP38-040
MD MICRODETECTORS傳感器MDI63D 387
automationdirect 100MXL025NG Thumbnail
LIKA編碼器BC-PB COPERCHIO CONNESSIONE PROFIBUS
DOLD 68497 HC3096N/102/61 DC60V
MD MICRODETECTORS傳感器MDI58B 2902
DEBEM 1B81-P-HTTPT 1P
英國(guó)ONDRIVES變速箱和減速器BLH70-2A
HYDAC HDA4745-A-100-000
67051308 PLP20.8-54B2-LBE/BC/20.8-LBE/BC S/EL FS
DOLD 13868 MK9988.51 AC50/60HZ 127V
00390251 SECTION PLD10.2-**/GC-N-CD-GD
Lenord+Bauer GEL209TN-01024C001 編碼器
BURSTER 8526-6001（1KN)
Beckhoff KL2541 50VDC 5A 總線模塊
BRAY 91-2100-11305-532
PLP20.25-LGE/GD/20.8-LGE/GD S FS EL
小強(qiáng)工控 CARLO GAVAZZI PS21L-PT20P0-H00
小強(qiáng)工控 CARLO GAVAZZI ICS08L45N40M5PO
CIRCLE SEAL SV23B2NO4P43
automationdirect GCX3204-24 Thumbnail
06878400 FP30.17S*- * *-LGE/GE-67N2-N-I
SAIA KOL311H7MRVPN00 模塊
AECO I18000396 SI18-DC8 PNP NC
BARKSDALE UPA5-1003-1-1 DC24V 4-20MA
Rexroth HMS01.1N-W 0070-A-07-NNNN 伺服模塊
RIEGLER 4613
MD MICRODETECTORS傳感器LS2ER/90-090S
hydac EDS3446-3-0400-000 壓力傳感器
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(guó)NASON壓力開(kāi)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(jì)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(bào)價(jià)
F點(diǎn)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(jiàn)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(hào)通過(guò)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(shí)輸入高電位，輸出低電位，對(duì)應(yīng)的led燈不亮，當(dāng)水位上升時(shí)，電位降低，輸出高電位，對(duì)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。
