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
这个原理其实就类似于我们很多人都在用的主动降噪耳机。在降噪耳机里有一个传感器可以采集和分析周围环境里的那些噪声，然后在耳机里产生相反的声波，这样就可以和噪声的声波相互抵消掉，从而达到降噪的目的。
事实上，这种滤波方式也可以使用无源滤波器来实现，这个也是传统的低EMI设计通常采用的方法。但是无源滤波器非常大，甚至会占整个电源方案总体积的30%。所以在芯片内部集成有源滤波器之后，不但能够对电磁辐射起到很好的消减作用，还能极大的减少器件的尺寸，这样就实现了EMI和面积的双重优化，进而降低成本，节省宝贵的电路空间。
根据TI的数据，在440 kHz频率下，采用这种方案最多可以将前端EMI滤波器的面积和体积分别缩减近50%和75%以上，并且将EMI减少高达50dBuV。和采用典型无源滤波器的设计相比，集成式有源EMI滤波器的设计可以帮助将EMI减少20dBuV。此外，前面介绍的DRSS技术还能帮助在低频和高频频带上将EMI进一步降低5dBuV。
结语
事实上，这篇文章里的内容只是关于模拟芯片非常小的一部分。不过就算是管中窥豹，模拟IC的博大精深应该也可见一斑。
网上有很多人在讨论模拟工程师和数字工程师哪个更高端、或者技术含量更高，也有很多学生朋友在纠结未来到底应该走哪条路，我也收到过很多类似的问题。我个人觉得数字模拟一直都是相辅相成、缺一不可的。比如虽然我主要做数字电路相关的工作，但是也会在工作中接触到很多和模拟相关的内容，就像是文章里介绍的电源和电磁干扰等等。
知乎里有一个问题，就是问数字模拟电路芯片的区别，我想借用这里赞的回答，也是我的好兄弟Tyson说的一句话，不管是走那条路都需要平时不断的积累和学习，我也会和大家一起努力加油成长。
