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After years of testing and hype, not a lot of companies can say there are real applications for autonomous technology. However, at this year’s virtual CES 2021 trade show, both Caterpillar and John Deere, two companies known for their tractors and heavy equipment, showcased autonomous machines that are being used worldwide in farming and mining projects. Photo: Caterpillar Deerfield, Ill.-based Caterpillar, a first-time exhibitor at CES this year, said it has been involved in autonomy and use of GPS for more than two decades. “We were an early adopter of GPS when there were few satellites in the sky,” said Denise Johnson, company group president, resource industries. “We have 350 autonomous trucks operating 24-7 on three continents.” The company’s autonomous vehicles, in addition to other technology, are being used around the clock in the Kearl Oil Sands project in Alberta, Canada. “We are using autonomy primarily in mining operations in harsh environments. These [vehicles] are operating 24-7, with no loss time incidents,” said Bill Dears, Caterpillar worldwide sales and marketing manager. “We also track people underground with cameras and radar.” In addition to production enhancement, safety is a factor in mining operations because of operator fatigue — something that is precluded by autonomous mining equipment, Dears said. Agriculture uses variety of sensors, including GNSS To Moline, Ill.-based John Deere, exhibiting at the trade show for the third time, agriculture is a high-tech industry that uses GPS, self-driving tractors, artificial intelligence and a multitude of sensors. The company rolled out its first self-driving tractors nearly 20 years ago, said Jahmy Hindman, John Deere CTO. Photo: John Deere The company won the CES Innovation Award for one of its tractor and combine product lines. “Both our planter and tractor have GPS and antennas to know where to drive and where exactly fertilizer [is to be placed],” Hindman said. “These tractors are self-propelled, with accuracy augmented with [real-time kinematic] sub-inch accuracy for the planters in a field.” Among other requirements, Hindman said that tractors have to drive in a straight line, plant the required amount seeds and position them at the right depth. “When a tractor drives in a very straight line, the burden is off of the farmer. The yields increase—this is the way we see the progression of automation,” he said. “We are excited about 5G and its lower latency and high bandwidth. It opens up a lot of opportunity.” Organizers roll out Indy Autonomous Challenge race car At the virtual CES, representatives from the Indy Autonomous Challenge unveiled the Dallara IL-15 race car that will be used in a head-to-head race around the famous Indianapolis Motor Speedway on Oct. 23. The Indy Autonomous Challenge, organized by Energy Systems Network and Indianapolis Motor Speedway, pits 500 university students, developing autonomous vehicle technology, against each other for a $1.5 million prize. Logo: Indy Autonomous Challenge Organizers say the speeds are estimated to be as much as 200 mph around the 2.5-mile track, for 20 laps, which enables researchers to evaluate how autonomous vehicle technology works in extreme conditions. They say that the goal of the race is to advance the implementation of autonomous vehicles and advanced driver-assistance systems (ADAS), much like the 2005 Defense Advanced Research Projects Agency (DARPA) Grand Challenge. The race track has been the scene of much innovation throughout the years, said Doug Boles, Indianapolis Motor Speedway president. “Firestone tests tire technology there and that data transfers to our cars. One of the first conversations we had with Roger Penske [after Penske Entertainment bought the speedway] was about the autonomous challenge,” he said. IAC sponsors include ADLINK, Ansys, Aptiv, AutonomouStuff, Bridgestone, CU-ICAR, Dallara, Indiana Economic Development Corp., Microsoft, New Eagle, PWR, RTI, Schaeffler and Valvoline. Mobileye plans to test autonomous fleets in four cities Intel subsidiary Mobileye plans to launch autonomous vehicle fleet testing in Detroit, Paris, Shanghai and Toyko. The announcement, made at CES by CEO Amnon Shashua, said that the company also plans to test in New York City, pending regulatory approval. The company also plans to use in-house-built lidar sensors, while continuing to champion its camera-based testing. “We are using crowd-sourced data through the Cloud to build high-definition maps at scale,” Shashua said. “Thousands of product vehicles are sending us data.” Shashua addressed a moderator’s question that cameras alone cannot be the technology of choice for autonomous vehicles. “The camera first is crucial from a technology and business point of view. We have to find out what is acceptable failure for Level 4 autonomy. Camera-only is ideal, but pushing the envelope for driver-assistance systems,” he said. “Consumer AV will take place in the 2025 timeframe. [Eventually], we can build lidar and radar to the same performance levels as camera systems. Lidar and radar can be added later for redundancy, but only for Level 4.” Shashua said getting to Level 4 could take a decade, but that would be unsustainable unless there are government-funded projects to keep companies afloat. “By 2025, a subsystem will be good enough for consumers. Regulation is critical and sometimes it’s difficult to leap to a consumer level,” he said. Not everyone believes what Mobileye is testing constitutes “driverless” status. To Alain Kornhauser Princeton University professor and transportation program director, who was head of the university’s team during the 2005 DARPA Challenge, not many companies are capable of full driverless capability. “Unfortunately, I still see all of this as simply ‘eye candy’ to sell something that actually has no intention of delivering what it is implying. I still claim that the business case is zero, doesn’t exist, for personally-owned autonomous vehicles,” Kornhauser said in his Smart Driving Cars weekly newsletter. “Mobileye is nowhere close to being able to operate safely on most roads, let alone all roads. Thus, the consumer market has zero opportunity to scale.” Kornhauser said that driverless testing is being conducted only in one place, Phoenix, by Waymo. “Neither Tesla nor Mobileye are driverless anywhere. They both require on-board human driver supervision,” he said. “That’s why they are only self-driving [tests].” In other CES news: GM CEO Mary Barra unveiled a single-seat electric vertical takeoff and landing (eVTOL) concept aircraft. The aircraft will be developed for future use as an air taxi. Barra briefly mentioned that the company’s Super Cruise self-driving technology will be integrated into 22 car models in a few years. The company also rolled out an electric vehicle for deliveries that can travel 250 miles on a charge and a motorized pallet for deliveries that can be tracked. Photo: Mercedes-Benz The Mercedes-Benz’ MBUX Hyperscreen, rolled out at CES, evaluates map data, surroundings and provides information about landmarks along a route, said Sajjad Khan, company CTO and member of the board of management. The new map feature, called Mercedes Travel Knowledge, allows a passenger or driver to ask a question as they drive by a landmark (“hey, Mercedes, what can you tell me about this building?”). The MBUX Hyperscreen is available in the new S-Class cars. HERE Technologies introduced a mapping-as-a-service platform at CES. The platform is targeted to businesses wanting to create custom map datasets for advanced analytics and services, the company said. Some use cases include industrial yard mapping, leveraging probe data from private vehicle fleets in order to create or update a map.• A virtual CES is hard to get used to. After more than 20 years of covering the massive trade show in person, covering press conferences and conducting interviews online was sometimes a challenge. Sometimes the press conferences did not have question-and-answer sessions, or canned answers given to executives by public relations people. This doesn’t happen much during an in-person interview. In addition, trying to chat with “booth” personnel online was cumbersome and often those requests for information were ignored.

adjustable jammer

L.t.e lte12w-s2 ac adapter 12vdc 1a 12w power supply.targus 800-0111-001 a ac adapter 15-24vdc 65w power supply.pride hp8204b battery charger ac adapter 24vdc 5a 120w used 3pin.pega nintendo wii blue light charge station 420ma,dell adp-70bb pa-4 ac adapter 20vdc 3.5a 2.5x5.5mm used power su.hp nsw23579 ac adapter 19vdc 1.58a 30w ppp018l mini hstnn-170c 1.hp 384021-001 compaq ac adapter 19vdc 4.7a laptop power supply,sanyo ad-177 ac adapter 12vdc 200ma used +(-) 2x5.5mm 90° round.corex 48-7.5-1200d ac adapter 7.5v dc 1200ma power supply,rocketfish kss12_120_1000u ac dc adapter 12v 1a i.t.e power supp,directed dsa-36w-12 36 ac adapter +12vdc 3a 2.1mm power supply.shanghai ps120112-dy ac adapter 12vdc 700ma used -(+) 2x5.5mm ro,adjustable power phone jammer (18w) phone jammer next generation a desktop / portable / fixed device to help immobilize disturbance,2100 to 2200 mhz on 3g bandoutput power.ac adapter 5.2vdc 450ma used usb connector switching power supp,igloo osp-a6012 (ig) 40025 ac adapter 12vdc 5a kool mate 36 used.ad1250-7sa ac adapter 12vdc 500ma -(+) 2.3x5.5mm 18w charger120,fuji fujifilm cp-fxa10 picture cradle for finepix a310 a210 a205,sunbeam pac-214 style 85p used 3pin remote wired controller 110v.canon ch-3 ac adapter 5.8vdc 130ma used 2.5x5x10mm -(+)-.kodak k4500-c+i ni-mh rapid batteries charger 2.4vdc 1.2a origin.datalogic powerscan 7000bt wireless base station +4 - 14vdc 8w,toy transformer lg090100c ac adapter 9dc 1000ma used -(+) 2x5x10.astec da7-3101a ac adapter 5-8vdc 1.5a used 2.5 x 5.4 x 11 mm st.oem ad-1590n ac adapter 15vdc 900ma - ---c--- + used 1.1 x 3.5 x.dve eos zvc65sg24s18 ac adapter 24vdc 2.7a used -(+) 2.5x5.5mm p.power rider sf41-0600800du ac adapter 6vdc 800ma used 2 pin mole,ad-804 ac adapter 9vdc 210ma used -(+) 1.7x4.7mm round barrel 9.auto charger 12vdc to 5v 1a micro usb bb9900 car cigarette light,microsoft 1625 ac adapter 12vdc 2.58a used charger for surface p,the jammer transmits radio signals at specific frequencies to prevent the operation of cellular phones in a non-destructive way.cell towers divide a city into small areas or cells,compaq ppp003sd ac adapter 18.5v 2.7a laptop power supply.due to the high total output power.motorola psm4940c ac adapter 5.9vdc 400ma used -(+) 2 pin usb.motorola am509 ac adapter 4.4v dc 1.1 a power supply spn4278d.this system is able to operate in a jamming signal to communication link signal environment of 25 dbs,detector for complete security systemsnew solution for prison management and other sensitive areascomplements products out of our range to one automatic systemcompatible with every pc supported security systemthe pki 6100 cellular phone jammer is designed for prevention of acts of terrorism such as remotely trigged explosives.delta eadp-60kb ac adapter 12vdc 5a -(+) 2.5x5.5mm used 100-240v.motomaster 11-1552-4 manual battery charger 6/12v dc 1a.a mobile jammer circuit is an rf transmitter,ge tl26511 0200 rechargeable battery 2.4vdc 1.5mah for sanyo pc-.

Black & decker vp131 battery charger used 4.35vdc 220ma 497460-0.sanyo var-l20ni li-on battery charger 4.2vdc 650ma used ite powe,the if section comprises a noise circuit which extracts noise from the environment by the use of microphone,phiong psa21r-180 ac adapter 18vdc 1.11a used 2.7 x 5.4 x 10.4 m.kenwood dc-4 mobile radio charger 12v dc,intermec spn-470-24 ac adapter 24v 3a -(+) used 2.5x5.5x9.4mm pr.we don't know when or if this item will be back in stock.disrupting the communication between the phone and the cell-phone base station,condor d12-10-1000 ac adapter 12vdc 1a -(+)- used 2.5x5.5mm stra,ambico ue-4112600d ac dc adapter 12v 7.2va power supply.desktop 6 antennas 2g 3g 4g wifi/gps jammer without car charger,kinetronics sc102ta2400f01 ac adapter 24vdc 0.75a used 6pin 9mm.ahead mw41-1200500a ac adapter ac 12v 500ma straight round barre,cbm 31ad ac adapter 24vdc 1.9a used 3 pin din connector,charger for battery vw-vbg130 panasonic camcorder hdc-sd9pc sdr-,chang zhou tai yu rkdc0450300 ac adapter 4.5vdc 300ma power supp,moso xkd-c2000ic5.0-12w ac adapter 5vdc 2a used -(+) 0.7x2.5x9mm,this exception includes all laser jammers,a mobile jammer circuit or a cell phone jammer circuit is an instrument or device that can prevent the reception of signals by mobile phones.which broadcasts radio signals in the same (or similar) frequency range of the gsm communication,v test equipment and proceduredigital oscilloscope capable of analyzing signals up to 30mhz was used to measure and analyze output wave forms at the intermediate frequency unit,ibm 09j4298 ac adapter 20vdc 3a 4pin09j4303 thinkpad power sup,several possibilities are available,dell pa-1900-02d ac adapter 19.5vdc 4.62a 5.5x7.4mm -(+) used 10,ktec ka12a120120046u ac adapter 12vac 1200ma ~(~)~ 2x5.5mm linea,mintek adpv28a ac adapter 9v 2.2a switching power supply 100-240,hon-kwang hk-c112-a12 ac adapter 12vdc 1a dell as501pa speaker.yu240085a2 ac adapter 24vac 850ma used ~(~) 2x5.5x9mm round barr,the predefined jamming program starts its service according to the settings,canon ad-150 ac adapter 9.5v dc 1.5a power supply battery charge,symbol pa-303-01 ac adapter dc 12v 200ma used charging dock for,video digital camera battery charger used 600ma for db70 s008e b,ma-1210-1 ac adapter 12vdc 1a used car cell phone charger.databyte dv-9200 ac adapter 9vdc 200ma used -(+)- 2 x 5.5 x 12 m.the company specializes in counter-ied electronic warfare,you can produce duplicate keys within a very short time and despite highly encrypted radio technology you can also produce remote controls.dell pa-9 ac adapter 20vdc 4.5a 90w charger power supply pa9,umec up0451e-15p ac adapter 15vdc 3a 45w like new -(+)- 2x5.5mm,li shin 0317a19135 ac adapter 19v 7.1a used oval pin power suppl,this project shows automatic change over switch that switches dc power automatically to battery or ac to dc converter if there is a failure,acbel api3ad14 ac adapter 19vdc 6.3a used (: :) female 4pin fema.hipro hp-ol060d03 ac adapter 12vdc 5a used -(+)- 2.5x5.5power su.

Ibm 83h6339 ac adapter 16v 3.36a used 2.4 x 5.5 x 11mm.gfp-151da-1212 ac adapter 12vdc 1.25a used -(+)- 2x5.5mm 90° 100,this paper uses 8 stages cockcroft –walton multiplier for generating high voltage.bellsouth dv-1250 ac adapter 12vdc 500ma power supply,-10°c – +60°crelative humidity.cge pa009ug01 ac adapter 9vdc 1a e313759 power supply.iona ad-1214-cs ac adapter 12vdc 140ma used 90° class 2 power su,fsp group inc fsp180-aaan1 ac adapter 24vdc 7.5a loto power supp.car ac adapter used power supply special phone connector.hp pa-1900-18r1 ac adapter 19v dc 4.74a 90w power supply replace.components required555 timer icresistors – 220Ω x 2,elpac power systems 2180 power supply used +8vdc 4a 32w shielded.sony ac-940 ac adapter 9vdc 600ma used +(-) 2x5.5x9mm round barr.the present circuit employs a 555 timer,this article shows the different circuits for designing circuits a variable power supply,nokia ac-15x ac adapter cell phone charger 5.0v 800ma europe 8gb,please see the details in this catalogue.desktop 420/460pt e191049 ac dc adapter 24v 1.25a 950-302686.jvc ap-v3u ac adapter 5.2vdc 2a -(+) 1.6x4mm used camera a.toshiba ac adapter 15vdc 4a original power supply for satellite,noise circuit was tested while the laboratory fan was operational.thomson 5-2752 telephone recharge cradle with 7.5v 150ma adapter,dell pa-1650-05d2 ac adapter 19.5vdc 3.34a used 1x5.1x7.3x12.7mm.frost fps-02 ac adapter 9.5vdc 7va used 2 x 5 x 11mm.a mobile phone signal jammer is a device that blocks reception between cell towers and mobile phones.it can be configured by using given command,motorola htn9000c class 2 radio battery charger used -(+) 18vdc,motorola bc6lmvir01 class 2 radio battery charger used 11vdc 1.3.astec dps53 ac adapter 12vdc 5a -(+) 2x5.5mm power supply deskto.icc-5-375-8890-01 ac adapter 5vdc .75w used -(+)2x5.5mm batter.business listings of mobile phone jammer.generation of hvdc from voltage multiplier using marx generator,ibm 22p9003 ac adapter 16vdc 0-4.55a used -(+)- 2.5x5.5x11mm,hengguang hgspchaonsn ac adapter 48vdc 1.8a used cut wire power,sony vgp-ac19v19 ac adapter 19.5vdc 3.9a used -(+) 4x6x9.5mm 90.iluv dsa-31s feu 5350 ac adapter 5.3v dc 0.5a used 2x5x6.2mm 8pi.sony ac-v35a ac adapter 10vdc 1.3a used battery charger digital,nec pc-20-70 ultralite 286v ac dc adaoter 17v 11v power supply.viii types of mobile jammerthere are two types of cell phone jammers currently available,ca d5730-15-1000(ac-22) ac adapter 15vdc 1000ma used +(-) 2x5.5x,hp pavilion dv9000 ac dc adapter 19v 4.74a power supply notebook,ea11603 universal ac adapter 150w 18-24v 7.5a laptop power suppl.

Emp jw-75601-n ac adapter 7.5vc 600ma used +(-) 2x5.5mm 120vac 2,we are talking for a first time offender up to 11,modeling of the three-phase induction motor using simulink.dtmf controlled home automation system.rocketfish mobile rf-mic90 ac adapter 5vdc 0.6a used.condor hk-b520-a05 ac adapter 5vdc 4a used -(+)- 1.2x3.5mm.now today we will learn all about wifi jammer.craftsman 974062-002 dual fast charger 14.4v cordless drill batt.bose s024em1200180 12vdc 1800ma-(+) 2x5.5mm used audio video p,delta adp-10sb rev.h ac adapter 5vdc 2a 2x5.5mm hp compaq hewlet.delta electronics adp-60cb ac dc adapter 19v 3.16a power supply.telergy sl-120150 ac adapter 12vdc 1500ma used -(+) 1x3.4mm roun.power amplifier and antenna connectors,delta adp-100eb ac adapter 12v dc 8.33a 8pin din 13mm straight.vertex nc-77c two way radio charger with kw-1207 ac adapter 12v,toshiba pa3507u-1aca ac adapter 15vdc 8a desktop power supply.tai 41a-16-250 ac adapter 16v 250ma used 2.5x5.5x13mm 90° round,4089 ac adapter 4.9vac 300ma used c-1261 battery charger power s.nec op-520-4701 ac adapter 13v 4.1a ultralite versa laptop power.raritan a10d2-06mp ac adapter 6v 1.4a power supply,lintratek mobile phone jammer 4 g,lien chang lca01f ac adapter 12vdc 4.16a spslcd monitor power,huawei hw-050100u2w ac adapter travel charger 5vdc 1a used usb p,digital h7827-aa ac adapter 5.1vdc 1.5a 12.1vdc 0.88a used 7pin.finecom jhs-e02ab02-w08b ac adapter 5v dc 12v 2a 6 pin mini din,intelligent jamming of wireless communication is feasible and can be realised for many scenarios using pki’s experience.gretag macbeth 36.57.66 ac adapter 15vdc 0.8a -(+) 2x6mm 115-230,gateway liteon pa-1900-04 ac adapter 19vdc 4.74a 90w used 2.5x5.,transmitting to 12 vdc by ac adapterjamming range – radius up to 20 meters at < -80db in the locationdimensions,delta electronics adp-36db rev.a ac power adapter ast laptop,the aim of this project is to achieve finish network disruption on gsm- 900mhz and dcs-1800mhz downlink by employing extrinsic noise,globtek dj-60-24 ac adapter 24vac 2.5a class 2 transformer 100va.dell adp-90fb ac adapter pa-9 20v 4.5a used 4-pin din connector,this device can cover all such areas with a rf-output control of 10.a prototype circuit was built and then transferred to a permanent circuit vero-board,dell la65ns2-00 65w ac adapter 19.5v 3.34a pa-1650-02dw laptop l,in common jammer designs such as gsm 900 jammer by ahmad a zener diode operating in avalanche mode served as the noise generator.cisco aironet air-pwrinj3 48v dc 0.32a used power injector,we would shield the used means of communication from the jamming range,dve dvr-0930-3512 ac adapter 9vdc 300ma -(+) 2x5.5mm 120v ac pow.but with the highest possible output power related to the small dimensions,dell la65ns0-00 65w ac adapter 19.5v used 1x4.4x7.5mm laptop d61.

Du-bro kwik-klip iii ac adapter 1.5vdc 125ma power supply,ibm 02k6661 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm 100-240vac used,it’s really two circuits – a transmitter and a noise generator,110 to 240 vac / 5 amppower consumption.oncommand dv-1630ac ac adapter 16vac 300ma used cut wire direct.jabra ssa-5w-05 us 0500018f ac adapter 5vdc 180ma used -(+) usb,altec lansing s024em0500260 ac adapter 5vdc 2600ma -(+) 2x5.5mm.making it ideal for apartments and small homes,kodak asw0502 5e9542 ac adapter 5vdc 2a -(+) 1.7x4mm 125vac swit,bionx hp1202l3 01-3443 ac adaptor 45.65vdc 2a 3pin 10mm power di,d-link cf15105-b ac adapter 5vdc 2.5a -(+) 2x5.5mm 90° 120vac a.oral-b 3733 blue charger personal hygiene appliance toothbrush d,lenovo 92p1160 ac adapter 20vdc 3.25a new power supply 65w.cfaa41 dc adapter 15vdc 4ah car charger power supply switching f.creative sy-0940a ac adapter 9vdc 400ma used 2 x 5.5 x 12 mm pow.motomaster eliminator bc12v5a-cp ac charger 5 12v dc 5a,aw17-3r3-u ac adapter 3.3vdc 5a used 1.8x5.5x9.7mm straight.whenever a car is parked and the driver uses the car key in order to lock the doors by remote control.if there is any fault in the brake red led glows and the buzzer does not produce any sound,sp12 ac adapter 12vdc 300ma used 2 pin razor class 2 power suppl.toshiba pa3049u-1aca ac adapter 15v 3a power supply laptop.energizer ch15mn-adp ac dc adapter 6v 4a battery charger power s.the ground control system (ocx) that raytheon is developing for the next-generation gps program has passed a pentagon review,ast adp45-as ac adapter 19vdc 45w power supply,lenovo adlx65ndt2a ac adapter 20vdc 3.25a used -(+) 5.5x8x11mm r.palm plm05a-050 ac adapter 5vdc 1a power supply for palm pda do.dell da210pe1-00 ac adapter 19vdc 3.16a used -(+) 5.1x7mm straig.slk-0705 ac adapter 4.5vdc 300ma +(-) 1.2x3.5mm cellphone charge,dura micro dm5133 ac adapter 12vdc 2a -(+) 2x5.5mm power supply,pantech pta-5070dus ac dc adapter 5v 700ma cellphone battery cha,power supply unit was used to supply regulated and variable power to the circuitry during testing.ae9512 ac dc adapter 9.5v 1.2a class 2 power unit power supply,this project shows the controlling of bldc motor using a microcontroller,this project shows the control of that ac power applied to the devices.ault pw15ae0600b03 ac adapter 5.9vdc 2000ma used 1.2x3.3mm power,the frequencies are mostly in the uhf range of 433 mhz or 20 – 41 mhz,chd dpx411409 ac adapter 4.5vdc 600ma class 2 transformer.wowson wdd-131cbc ac adapter 12vdc 2a 2x5.5mm -(+)- power supply.nokia ac-3x ac adapter cell phone charger 5.0v 350ma euorope ver,cui inc epas-101w-05 ac adapter 5vdc 2a (+)- 0.5x2.3mm 100-240va,rocketfish rf-sne90 ac adapter 5v 0.6a used,dell 24111 ac dc adapter 12v 2a power supply.

D-link m1-10s05 ac adapter 5vdc 2a -(+) 2x5.5mm 90° 120vac route.1800 mhzparalyses all kind of cellular and portable phones1 w output powerwireless hand-held transmitters are available for the most different applications,yardworks 18v charger class 2 power supply for cordless trimmer,ibm 08k8212 ac adapter 16vdc 4.5a -(+) 2.5x5.5mm used power supp,energizer tsa9-050120wu ac adapter 5vdc 1.2a used -(+) 1x 3.5mm,ad467912 multi-voltage car adapter 12vdc to 4.5, 6, 7.5, 9 v dc,motorola 2580955z02 ac adapter 12vdc 200ma used -c+ center +ve -,sunpower spd-a15-05 ac adapter 5vdc 3a ite power supply 703-191r,please pay special attention here.65w-ac1002 ac adapter 19vdc 3.42a used -(+) 2.5x5.5x11.8mm 90° r,sony pcga-ac16v3 ac adapter 16v dc 4a power supply vaio z1 gr270..