描述
L1和C1可消除信號中的尖峰波并抑制干擾。經(jīng)L1、C1濾波后的信號接入到整流橋,再將從整流橋中輸出的高壓直流信號經(jīng)過C2進(jìn)行濾波后,即可得到電壓Vi。在圖2中,T1為高頻變壓器,它能夠快速存儲和釋放能量,經(jīng)高頻整流濾波后即可獲得直流連續(xù)輸出。高頻變壓器T1的1腳和3腳為輸入初始繞組,4、5兩腳為反饋繞組,次級繞組分別為6,9腳和7,10腳(其中1,4,6,7為各繞組的同名端)。并且6,9繞組是主繞組,用它經(jīng)進(jìn)一步變換產(chǎn)生的+5V直流穩(wěn)壓電源可作為主電壓源,即數(shù)字電壓源(Vo1);7,10繞組為輔繞組,用它經(jīng)電容C8~C11濾波和78L05穩(wěn)壓產(chǎn)生的+5V直流穩(wěn)壓電源為輔電壓源,即模擬電壓源(Vo2)。鑒于在TOP221Y內(nèi)的功率MOSFET關(guān)斷瞬間,高頻變壓器的漏感會產(chǎn)生尖峰電壓,另外,在1,3初始繞組上還會產(chǎn)生感應(yīng)電壓(即反向電動勢),而且二者又會疊加在Vi上,使電壓嚴(yán)重增大,因而要求功率MOSFET能夠承受高壓。同時,還必須在漏極增加鉗位電路,以吸收尖峰電壓,保護(hù)TOP221Y內(nèi)的功率MOSFET不受損害。本設(shè)計利用R1,C3,ZD1,D1組成鉗位電路。當(dāng)MOSFET導(dǎo)通時,T1的初始繞組的電壓極性為(3端)為正,1端為負(fù),此時D1截止,鉗位電路不起作用;而在MOSFET截止的瞬間,初始繞組變?yōu)?端為正,3端為負(fù),此時D2導(dǎo)通,尖峰電壓就被R1和C3吸收掉。
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
KLA-Tencor AIT1 Robot Distr.Assy.PCB 530352 Working
KLA-Tencor AIT1 Olympus Microscope Assembly Working
ENI DCG-200 20kW DC Power Supply DCG-200Z 0190-22954
ENI GHW-12 GHW-12Z Genesis RF Generator 0190-06988
Nikon Optistation 3 Microscope Assy W/Accessories
Daikin Heat Exchanger Brine Chiller Unit TBR15BM
Kensington Transfer Robot 25-3700-1425-08 working
Kensington Transfer Robot 25-3700-1425-10 working
Kensington Transfer Robot 25-3700-1425-08 working
AE RF Bias Match 3155031-037A not working 1110-00056
AE RF Match 3155031-037A not working 1110-00056
Shimadzu 20M 90 Deg Turbopump Cable Set 262-78462-56V1
Velmex Unislide 200mm Rotary Table B4818TS working
ENI GHW-12Z Genesis RF Generator 1250W working
Adlink AMAT cPCI-3720 Single Board Computer 0190-19561
Yaskawa 8-Axis Motion Controller SMC 2000-8DM working
Equipe PRI Robot Controller SC8-41000-000 untested
Neslab HX 300 Chiller HX+300W/C 0190-77428
Yaskawa Nikon NSR S202 Controller DDCVR-CR1041 working
Nikon NSR S202 Controller 4K171-841-3 working
CPS TFE High Volt Power Supply 1966-00-0030 untested
Nikon NSR-202 Stepper Power Controller RR-002V1.3
Nikon NSR S202 DUV Scanner Scan Module working
Yaskawa Nikon NSR S202 Scanner Robot Elevator Module
Nikon NSR-S202A 200mm Wafer Handler Prealigner working
NovaScan 420 Nova Applied Materials AMAT NOVA 840
Daikin Heat Exchanger Brine Chiller Unit TBR15AMX
ASML 200mm Stepper DSC 7911 PCB 6810116041
TEL Tokyo Electron 100mm Back Plane Heater A112654
JEOL 7500 Heat Magenetic Chamber FEG WS-7555FEGH/IP
Lam Lower Electrode ASM Drive 853-250589R001 Refrbshd
AMAT Applied Materials RF Match 0010-09416
AMAT XR80 Implanter Wafer Arm Controller 9090-00099ITL
AMAT 13.56MHz RF Match 0010-09146 refurbished
AMAT XR80 Implant Power Distribution Unit 9090-00104ITL
AMAT XR80 Implant Power Distribution Unit 9090-00194ITL
TEL Tokyo Electron Throttle Valve Assembly A112990
TEL Tokyo Electron 100mm Back Plane Heater A121893
Lam Research DI Disp Core Assembly 122940800 New
ASML Stepper Library Brake 851-0618-003 working
BioRad Quaestor Q7 Controller W/Tape/Disc Drive&PCBs
AE Advanced Energy PDX 1250 RF Generator 3156024-131A
AE RF Match Network 3155031-032A AMAT 0190-01402
AMAT Glassman High Volt Power Supply PS/KL030N100YUA
VAT Pneumatic Gate Valve 12148-PA44-AK01 working
Brooks CryoTiger Compressor T1101-01-000-14 working
VAT Pneumatic HV Gate Valve 14046-PE24-AAL1 new
V-Tex Vacuum Rollcam Slit Valve 200803-25-0013-?02 new
Nikon NSR Series Interface Unit Z-X4P/12-A0702C
Tokyo Electron ACT 8 Chem Cab Buffer Tank Assembly
Varian Turbo-V 1800 Controller 9699461S002 E23000028
Leybold Varian Turbopump Controller NT 1000 112087001
Varian E1000 Chamber Interface 101927004 working
AMAT XR80 Implanter Monitor Interface 9090-00279ITL
AMAT XR80 Implanter Monitor Interface 9090-00661ITL
Hitachi M-511E THK 200mm Wafer Indexer
Hitachi M-511E 200mm Wafer Prealigner Rorze Driver
AMAT XR80 Implanter Monitor Interface 9090-00100ITL
BioRad Quaestor Q7 Microscope Turret With Objectives
Thermo Electron DEI Water to Water Cooler Chiller
Microbar Trackmate Chemical Cabinet
Nikon Optistation 3 X Y Stage With Encoders
Varian TV 301 Vacuum Turbopump SQ424 working
VAT Pendulum Gate Valve Series 16.5 DN 63-320 w/Heat
ASML A5401A/B Preamp PCB Assembly 859030003