YASKAWA JANCD-SP17B
YASKAWA JANCD-SP17B
YASKAWA JANCD-SP17B
METTLER ME-32414-C ME-32403 00032403 OPTION
METTLER ME-56590 ME-44 00056591 CARD
KEM 414-0019 DRIVER BOARD DCU-500
C&M Corp. CM 24 AWG LL3361 CSA 300V Cable
METTLER ME-472011 00472010/01/J5 CARD
LOT OF 6 Applied BioSystems WAT105802 & more
WC014736 WINDOW SIDE TURBO IONSPRAY
METTLER ME-32431 ES-32428b CARD
LOT OF 3 cnCH-1 0134003
IMEDIA PCI S25-7000145 STREAM PROCESSOR CARD LOT OF 3
FOSS ELECTRIC 398693 ROD
PerSeptive BioSystems GEN600979
54-01 Bellingham + Stanley 54-01
SWISS MAXON DC MOTOR 2326.941-12.116?-050
Turbine Engine Blade LOT OF 2
INTEL 142693-003 142694 COMMUNICATION EXPANSION BOARD
MICROBAR SYSTEM PWB 17-001 18-017 BOARD
INTEL 135837-008 148298-001 MFD CONTROLLER BOARD
3COM 3C175009-91 SuperStack-3 Switch 3226 175009-110
IBM 77P2964 J33704Z Short Wave Transceiver Module LOT
IBM SW GBIC P77P2965 P77P2965 NEW! Lot!!
NEXCOM Eplication TrafficRacer EBS1563P-563R SYSTEM
WTD RTXM139-400-K WHTD 314501 155M-15km-1310n?m-SM-ESFP
Agilent HFBR-5710LP 850nm Optical Gigabit Transceiver
Fiberxon FTM-3101C-SL15G 1310nm 155M SFP Transceiver
CISCO SERIAL 73-3929-01A0 28-2373-03 CARD
ARRIS TM502A/CE 717944 TM02DL1G5 TM502 TELEPHONE
ARRIS TM602A/CE 721053 TM02AL1G6 TM602A TELEPHONE
IBM PN: 42C2087 EC: J927741 1P42C2087 LOT NEW
681091 ORINOCO PROXIM PN: 681091
ALVARION BreezeACCESS GO GNCPP202 500048
ALVARION SE2900 500031-07
TRIPP LITE PV INT 125 LAP POWER DC TO AC CONVERTER LOT
LANCIER 50B33 VOLTAGE TESTER? dB?
EBERHARD BAUER D-7300 ESLINGEN MOTOR NO: K7819823
Trend Communications Aurora
Kramer FC-10D XL Composite - YC Component Transcoder
NUCOMM Inc Modulator 70Mhz Very Hard to find!!!
Scientific Atlanta 7530I Video Receiver
YAMAHA DMC1000 XH909 MODULE
YAMAHA DMC1000 XH911 MODULE
YAMAHA DMC1000 XJ706 DTB MODULE
YAMAHA DMC1000 XH874 CRJ MODULE
YAMAHA DMC1000 CRE XH871 MONITOR CHANNEL
YAMAHA DMC1000 XH867 S14-343 CRD INPUT CHANNEL AES/EBU
YAMAHA DMC1000 XH878 CRL MODULE
YAMAHA DMC1000 XH875 CRK MODULE
YAMAHA DMC1000 XH877 CRM MODULE
YAMAHA DMC1000 XH868 CRF MODULE
YAMAHA DMC1000 XH872 CRH BUS OUT MODULE
YAMAHA DMC1000 XH870 CRG S14-308 MODULE
YAMAHA DMC1000 XH840 ANA 1/2 TW-2594V-0 MODULE
YAMAHA DMC1000 XH840 ANA 2/2 TW-25 94V-0 MODULE
YAMAHA DMC1000 XH842 CLK 2/2 TW-25 94V-0 MODULE
YAMAHA DMC1000 XH842 CLK 1/2 MODULE
YAMAHA DMC1000 XH839 OUT 2/2 MODULE
YAMAHA DMC1000 XH839 OUT 1/2 MODULE
YAMAHA DMC1000 XH838 IN 2/2 MODULE
YAMAHA DMC1000 XH838 IN 1/2 MODULE
YAMAHA DMC1000 XH841 CIN 2/2 MODULE
YAMAHA DMC1000 XH841 CIN 1/2 MODULE
YAMAHA DMC1000 XH824 MODULE
YAMAHA DMC1000 XH825 DSP MODULE
YAMAHA DMC1000 XH920 ANA 1/2 ANA 2/2 MODULE
YAMAHA DMC1000 XH921 PNL MODULE
YAMAHA DMC1000 XH923 REL MODULE
YAMAHA DMC1000 XH924 RER MODULE
YAMAHA DMC1000 XH827 PND MODULE
YAMAHA DMC1000 XH922 PNR MODULE
YAMAHA DMC1000 XH873 CRI ST OUT MODULE
2 X RAD ASM-40 ASM40/230/V35/B ASM40-1/230/V35?/TB(E)
YAMAHA DMC1000 XH848 MODULE
YAMAHA DMC1000 XH826 PMD MODULE
2 X RAD FCD-2 FCD-2A/230/V35 2062230000 230V AC 0.1A
LOT OF 3 TOKYO AF-102-A AUTO FADER
LOT OF 11 MINIC CLASSNET-UTP-V.?10-07 7MN-5BA10118-0
CISCO Ethernet 4E 800-02027-04F0 MODULE
CM-106V CORRIGENT SYSTEMS CM-106V
CISCO WS-X6704-10GE w/WS-F6700 CFC NON WORKING AS IS!
EDWARDS LOWARA CENTRIFUGAL PUMP SV206N07 Y11501128
EDWARDS LOWARA CENTRIFUGAL PUMP SV206N07M
Ceragon RODEO IDC PC-0250-01 EA-0250-1 A.00 MODULE
Ceragon Q0774002 Q0780040 EA-0172-0 EA-0102-9 MODULE
lot of 3 SPINNER BN 75 64 86 DC-BLOCK-INNER 800-2500MHZ
HP CA352-00180 Q3662-80001 03662 BOARD
YU191B EIMAC 06980 YU191B 0815 FRAGILE
HP INDIGO PCB R12A004A BOARD
NATIONAL ELECTRONICS NL10254-ILT
LOT OF 2 ElanVital EVN-1355A EVN-1216 Power Supply
DANFOSS EVITA OXYGEN METER 085G2061 IP: 65
VICOR 56-340-2010 REV A2 DC-DC
CATEL MODEL: 3039 MODULE 3033 AND 8 X 3034 MODULATOR
DANFOSS EVITA OXYGEN METER OXY 1500 085G2020 IP65 24VDC
NCD Xplora 452 System Base Network Computer Explora 452
Corrigent CM100 MPM10-MPM20-C-2?0 MPM20T/B Module
DANFOSS EVITA OXYGEN USC5000 SIGNAL CONVERTER 085G4145
Corrigent CM100 MPM20S CM100-MPM10-2-2?0S Module
DIGITAL 54-30060-03 DUAL DATA RATE DAUGHTER CARD
Corrigent UIM-OC3/STM1-8-?SFP Module
Corrigent UIM-GE-8-SFP Module
Radware DefensePro VOYAGER PBD-3450 M-7G A5-345M101
DANFOSS EVITA TRANSMITTER OXY3150 085G4010 085G0023
Corrigent UIM-OC12/STM4-4?-SFP Module
Corrigent UIM-OC48/STM16-?1-SFP Module
CMS 56-302-0016 56-312 VSC1PSCEAA TRILOGUE INFINITY LPM
Corrigent RIM-OC192 STM64-1-XFP RIM 192-XFP Module
Corrigent DIM OC192/STM64-1-S?R1-1310-10 Module
ANALOGUE AUDIO INPUT TO ENCODERS ROUTER PANEL 8899M01
CTI ICM MVIP Module Board Card 56-308-0005
Corrigent RIM-OC192 STM64-CC-1-LR2-?1550-10 Module
Corrigent UIM-OC3/STM1-CH?-4-SFP Module
DANFOSS VLT VARIABLE SPEED DRIVE 175H4760 CONTROL CARD
Corrigent CM100 ALM ALARM100 BOARD
DANFOSS VLT VARIABLE SPEED DRIVE 175H5392 PDC/ICC CARDS
4 X CMS 56-306-0004 VSC1RTDEAA TRILOGUE INFINITY FIM
PESA 81-9024-0437-5-?G 81904006996 81904007770 BOARD
DANFOSS VLT VARIABLE SPEED DRIVE 175H5394 PDC/ICC CARDS
HARMONIC MPE8010-120-1 PCB 13094V0 MPE8010
CMS 56-309-0064 Eisa 16bit Scsi Ctrl ADAPTEC AHA-1542CF
CMS 56-309-0064 VSAUHAACAA TRILOGUE INFINITY ATM ATM200
DANFOSS VLT VARIABLE SPEED DRIVE 175H5366 PDL SPARE
CMS 56-316-0041 TRILOGUE INFINITY DTM BOARD
DANFOSS VLT VARIABLE SPEED DRIVE 175H5393 PDL SPARE
NCD Xplora 452 System Network Computer Explora 452
DANFOSS VLT VARIABLE SPEED DRIVE 175H5390 PDL SPARE
IBM 03K9195 ULTRA2 ULTRA LVD SCSI 30V Cable E72452A
SANRAD V-SWITCH 3000 ISCSI V SWITCH
ALLOT AC200-804-006
Radware WSD-904664 DUAL PS 5GB + 16FE 128MB
IMEDIA S25-7000142 INPUT DVB-ASI PCI CARD LOT
2 X STELLAR ORBCOMM/GPS ST2500 SATELLISCEIVER
STELLAR ORBCOMM SC M/GPS ST2500X-GTR-M12?-CL 166STR
CELLVINE BDA-CDMA80-13-1?4-AB-XXX
CELLVINE BDA-CDMA80-8-14?-AA-MKII
STELLAR ORBCOMM ST2500X-GTR-M8-?CL 166STR ST250102123
這個原理其實就類似于我們很多人都在用的主動降噪耳機。在降噪耳機里有一個傳感器可以采集和分析周圍環境里的那些噪聲，然后在耳機里產生相反的聲波，這樣就可以和噪聲的聲波相互抵消掉，從而達到降噪的目的。
事實上，這種濾波方式也可以使用無源濾波器來實現，這個也是傳統的低EMI設計通常采用的方法。但是無源濾波器非常大，甚至會占整個電源方案總體積的30%。所以在芯片內部集成有源濾波器之后，不但能夠對電磁輻射起到很好的消減作用，還能極大的減少器件的尺寸，這樣就實現了EMI和面積的雙重優化，進而降低成本，節省寶貴的電路空間。
根據TI的數據，在440 kHz頻率下，采用這種方案最多可以將前端EMI濾波器的面積和體積分別縮減近50%和75%以上，并且將EMI減少高達50dBuV。和采用典型無源濾波器的設計相比，集成式有源EMI濾波器的設計可以幫助將EMI減少20dBuV。此外，前面介紹的DRSS技術還能幫助在低頻和高頻頻帶上將EMI進一步降低5dBuV。
結語
事實上，這篇文章里的內容只是關于模擬芯片非常小的一部分。不過就算是管中窺豹，模擬IC的博大精深應該也可見一斑。
網上有很多人在討論模擬工程師和數字工程師哪個更高端、或者技術含量更高，也有很多學生朋友在糾結未來到底應該走哪條路，我也收到過很多類似的問題。我個人覺得數字模擬一直都是相輔相成、缺一不可的。比如雖然我主要做數字電路相關的工作，但是也會在工作中接觸到很多和模擬相關的內容，就像是文章里介紹的電源和電磁干擾等等。
知乎里有一個問題，就是問數字模擬電路芯片的區別，我想借用這里贊的回答，也是我的好兄弟Tyson說的一句話，不管是走那條路都需要平時不斷的積累和學習，我也會和大家一起努力加油成長。
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