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Yang Changfeng, chief architect, BeiDou Navigation Satellite System, speaks at an international event. (Photo: BDS) On July 31, 2020, BDS-3, the global version of the BeiDou Navigation Satellite System (BDS), was formally commissioned, marking the completion of its three-step development process. BDS enters a new era of global services. With the principle of “serving the world and benefiting mankind,” BDS provides seven types of services to users worldwide, including positioning, navigation and timing (PNT) services, a global short-message communication (GSMC) service, a regional short-message communication (RSMC) service, an international search-and-rescue (SAR) service, the BeiDou satellite-based augmentation system (BDSBAS), the BDS/GNSS ground-based augmentation system (BDGAS), and the precise point positioning (PPP) service. BDS has been continuously making contributions to improving GNSS capabilities and promoting the development of GNSS applications and technologies. In 2020, as BDS construction was successfully completed, BDS has made fruitful achievements in application development and internationalization. System Construction Space Constellation Deployment. From March to June 2020, two BDS-3 GEO satellites were launched, while the in-orbit tests of two IGSO satellites, two GEO satellites, and two MEO satellites were completed. As the result, the global system constellation was successfully deployed. By the end of October 2020, 45 in-orbit operational BDS satellites provide services to global users, including 15 BDS-2 satellites and 30 BDS-3 satellites. Ground System Development. More than 40 new ground stations have been built, tested and commissioned. The BDS ground system is operating stably, supporting daily BDS operations. Basic Service Enhancement Generally speaking, the accuracy of the BDS signal-in-space is better than 0.5 m, BDS global positioning accuracy is better than 10 m, BDS velocity measurement accuracy is better than 0.2 m/s, and BDS timing accuracy is better than 20 ns. In the Asia-Pacific region, BDS positioning accuracy is better than 5 m, the velocity measurement accuracy is better than 0.1m/s, and timing accuracy is better than 10 ns. In the key service area, there are 30 BDS-3 satellites and 15 BDS-2 satellites that jointly provide the services using B1I and B3I signals. The actual average measured positioning accuracies are about 1.48 m horizontally and 2.99 m vertically (95% confidence), which are improvements of about 30% and 5% respectively as opposed to solely relying on the BDS-2 system. Globally, with the B1I, B3I, B1C and B2a signals, BDS-3 offers service availability of 100% (PDOP ≤6,). The actual measured positioning accuracies are about 1.54 m horizontally and 2.65 m vertically (95% confidence). Featured Services Benefit Users Presently, the BDS PPP service covers China and its surrounding areas. By broadcasting the high-precision orbit and satellite clock error corrections through the B2b signal, the high-precision positioning service is provided, while initial testing measurements show that the positioning accuracies are about 0.18 m horizontally and 0.26 m vertically (95% confidence). BDSBAS was developed in accordance with International Civil Aviation Organization (ICAO) standards to provide SBAS services with superior accuracy and integrity, enabling aircraft approach with vertical guidance of class I (APV-I). The BDSBAS services cover China and its surrounding areas, and the SBAS data, following ICAO standards are broadcast by the three BDS GEO satellites. In particular, the single frequency SBAS service is being provided through the BDSBAS-B1C signal. At the moment, the civil aviation certification process of the BDSBAS SF service is being prepared. The BDSBAS-B2a signal will provide the Dual Frequency Multiple Constellation (DFMC) SBAS service. BDS has been actively participating in the development process of the DFMC standards and carrying out the verification of the draft DFMC SBAS Standard and Recommended Practices. BDGAS consists of 155 framework reference stations and nearly 2,200 regional stations in China. The system carries out high-precision applications in many fields, such as surveying and mapping, land resources, earthquake monitoring, transportation and meteorology. Its basic services include real-time positioning at the meter, decimeter and centimeter levels, as well as precise post-processing positioning at the millimeter level. Being developed in accordance with Cospas-Sarsat standards, the BDS MEO-SAR service provides the detection probability of the international search-and-rescue service of better than 99%, with the characteristic return link capability. In July, a joint test was carried out using the BDS MEO-SAR satellites with the Cospas-Sarsat ground station in Maryland, U.S., and the relevant technical documents and the equipment admittance testing reports were formally submitted to Cospas-Sarsat, which provides Chinese contributions to the international MEO-SAR family. RSMC provides service to China and its surrounding areas through three GEO satellites. Its communication capability is greatly improved compared to BDS-2. With service capacity of 12 million times per hour, the transmitting power of user terminals is reduced to 1-3 W and the single message capacity reaches 1,000 Chinese characters. The construction of the RSMC service platform has been completed to promote the organic integration of short message and mobile communication services, and to further exert the advantages of the BDS featured services. GSMC provides global services through 14 MEO satellites with single message capacity of 40 Chinese characters. Figure 1. The number of visible BDS satellites as of BDT 13:00, Oct. 29, 2020. The number of visible satellites at Asia-Pacific Region is greater than 20. (Source: www.csno-tarc.cn) Integrated Applications As the system construction accelerates, BDS is also making great efforts to strengthen the development of BDS fundamental products and promote large-scale applications in various fields. The integrated applications and innovative development adopt the “BDS+” and “+BDS” models to improve quality and efficiency as well as to stimulate a healthy and fast-growing GNSS industry. Fundamental Products. At present, the fundamental BDS products have been used in areas such as mass-market applications, where the performance has reached or is close to the world-class level. Progress has been made in the research and development of multi-system baseband-RF integrated high-precision chips. The 28 nm chips have been mass-produced, and the 22 nm chips are about to be mass-produced. As a result, the function and performance of the chips will reach a new level. The BDS navigation chips, modules, high-precision boards and antennas have been exported to more than 120 countries and regions, serving millions of users worldwide. Industrial Applications. BDS has been widely used in various fields, including communication and transportation, public security, agriculture, forestry, animal husbandry and fishery, hydrological monitoring, meteorological forecasting, time synchronization, power dispatching, and disaster prevention and mitigation. Significant economic and social benefits have been generated. In the field of transportation, in the first three quarters of 2020, more than 7 million road vehicles were using BDS. The number of postal and express delivery vehicles using BDS reached 314,000, and the number of ships is about 1,369. In general aviation, 300 planes are using BDS. In agriculture, BDS-based automatic steering systems are on more than 45,000 pieces of agricultural machinery and equipment, saving 50% of the labor cost. BDS-based agricultural machinery operation supervision platforms are serving 10 million units of agricultural machinery equipment, greatly improving management and operational efficiency. In forestry, the BDS positioning and short message communication services are widely used in forest fire prevention, natural forest protection, forest inspection, pest control and so on. In the fishery field, BDS provides fishery managers and fishing vessels with ship position monitoring, emergency rescue, information dissemination, vessel management and other services. BDS terminals have been installed on more than 70,000 fishing boats and law enforcement vessels in China. More than 10,000 people have been saved. For disaster prevention and mitigation, a three-level platform covering the national ministries and the provinces was built to offer six-tier application services, deploying more than 45,000 BDS terminals. BDS plays an important role in the emergency response to major disasters such as flooding in South China and forest fire in Southwest China this year. BDS is accelerating entry into new infrastructural construction, and is deeply integrated with new technologies such as next-generation communication, blockchain, the internet of things, artificial intelligence, and more. New modes, formats and markets for BDS applications are constantly emerging. Mass-Market Applications. BDS-based navigation and positioning services have been adopted by various enterprises in the fields of e-commerce, smart mobile terminals, location-based services, the sharing economy and people’s livelihood, profoundly changing people’s production and lifestyles. Just like water and electricity, BDS provides public services that are easily accessible and available on demand. In smartphone applications, domestic and international mainstream chip manufacturers have released communication-navigation integrated chips compatible with BDS. More than 90% of mobile-phone companies applying for access to China’s domestic network support BDS positioning. Smartphones from Huawei, MI, Apple, VIVO, OPPS and other big brands in China are BDS-enabled. BDS Standards. The updating and upgrading of the BDS standard system is progressing smoothly, with Version 2.0 to be released soon. The BDS application standard systems will be published in electric, railway and other industries. The revision of the national BDS standards is advancing steadily. Four national standards were issued in early 2019, and 28 national standards will be released by the end of 2020. Forty-two standards related to the BDS program have been issued in three batches, while 58 new standards are being formulated. The work related to BDS intellectual properties is being carried out, and various innovation entities continue to improve BDS’ intellectual property creation, utilization and protection capabilities. Statistics shows that Chinese GNSS-related patent applications reached 12,170 in 2019 and 9,411 by the end of October, with an average growth rate of 21.7% in the past three years. International Cooperation Bilateral Cooperation. BDS continues to carry out bilateral cooperation with other GNSS to promote compatibility, interoperability and joint applications. Under the China-U.S. civil GNSS cooperation platform, working groups have been set up to continuously engage in cooperation and exchanges in areas such as compatibility and interoperability, augmentation systems and aviation applications, civil service provisions, etc. China and the Russian Federation held their seventh bilateral meeting in October, and have been pushing forward landmark demonstration projects such as joint ground station set-up, cross-border transportation and precision agriculture. China and the European Union are carrying out coordination, exchanges and cooperation under the framework of the China-EU space cooperation dialogue. Multilateral Cooperation. The BDS team participates in meetings of the International Committee on Global Navigation Systems (ICG), and continuously promotes discussions on relevant topics. The experience fighting COVID-19 using BDS/GNSS, as well as BDS applications in pandemic prevention and control, are being shared with the international GNSS community. During the ninth ministerial meeting of the China-Arab States Cooperation Forum held in July, video conferences promoted the deepening of China-Arab satellite navigation cooperation. International BDS Applications. With the export of BDS high-precision products, BDS is widely used in different regions and fields, such as land registration, precision agriculture, warehouse logistics in ASEAN countries, construction in Western Asia, airport timing and plying the seas in South Asia, power plant inspections in Eastern Europe, and land surveys in African countries. BDS high-precision products are exported to more than 120 countries and regions. BDGAS technologies and products are systematically exported, serving more than 100 million users worldwide. International Standards. BDS has been adopted by many international organizations including the ICAO, the International Maritime Organization, Cospas-Sarsat and mobile communication. A number of international standards supporting BDS have been released. In March, the International Electrotechnical Commission (IEC) officially issued the first international standard for BDS vessel receiving equipment inspection (IEC 61108-5), which provides the basis for global classification societies to carry out type certification of BDS equipment on vessels. In July, the first batch of 3GPP standards supporting the BDS B1C signal was officially released. The series of standards will support BDS signals in Assisted GNSS (A-GNSS) of 5G communication. By year’s end, the Radio Technical Commission for Maritime Services (RTCM) 10403.X standard, which fully supports BDS, will be officially released, marking an important milestone in the creation of a general data format standard for BDS receivers. Adhering to the development concept of “the Chinese BDS, the World’s BDS and the First Class BDS,” BDS development vigorously carries forward the Beidou spirit in the new era — independent innovation, open integration, unity and pursuit of excellence. By 2035, a more ubiquitous, integrated and comprehensive national PNT system with a spatial-temporal information service infrastructure covering space, sky, Earth and sea, and offering unified high precision, high intelligence, high security and high efficiency, will be built. It will provide core support for future intelligent and unmanned development; continuously promote system upgrading; integrate new technologies such as new generation communication and low orbit augmentation; strive to develop high-quality capabilities such as quantum navigation, full-source navigation, and micro PNT; and build a spatial-time information service infrastructure covering space, sky, Earth and sea, with high precision, high intelligence, high security and high efficiency.
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It is efficient in blocking the transmission of signals from the phone networks,sanyo 51a-2846 ac adapter used +(-) 9vdc 150ma 90degree round ba,j0d-41u-16 ac adapter 7.5vdc 700ma used -(+)- 1.2 x 3.4 x 7.2 mm.weihai power sw34-1202a02-b6 ac adapter 5vdc 2a used -(+) 6 pin.the inputs given to this are the power source and load torque.a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.power drivers au48-120-120t ac adapter 12vdc 1200ma +(-)+ new,vtech s004lu0750040(1)ac adapter 7.5vdc 3w -(+) 2.5x5.5mm round,condor 3a-066wp09 ac adapter 9vdc 0.67a used -(+) 2x5.5mm straig.digipower 35d-7.5-400 ac dc adapter 7.5v 400ma power supply clas,finecom pa3507u-1aca ac adapter 15vdc 8a replacement desktop pow.finecom zfxpa01500090 ac adapter 9vdc 1.5a -(+) 0.6x2.5mm used 9,acbel api4ad20 ac adapter 15v dc 5a switching power supply adapt,globtek gt-21089-1509-t3 ac adapter 9vdc 1a used -(+) 2.5x5.5mm,logitech u090020d12 ac adapter 9vdc 200ma - ---c--- + used 1.5 x,aqualities spu45e-105 ac adapter 12vdc 3a used 2 shielded wire,gateway lishin 0220a1890 ac adapter 18.5v 4.9a laptop power supp,potrans i.t.e. up02521050 ac adapter 5v dc 5a 6pin switching pow,cell phone signal jammer handheld blocker for phone wireless signal 6 antenna,htc cru 6800 desktop cradle plus battery charger for xv ppc htc,delta adp-90sb bb ac adapter 19vdc 4.74a -(+) 2.5x5.5mm used 100.lenovo adp-65kh b ac adapter 20vdc 3.25a -(+)- 2.5x5.5x12.5mm,gn netcom a30750 ac adapter 7.5vdc 500ma used -(+) 0.5x2.4mm rou.pc-3010-dusn ac adapter 3vdc 1000ma used 90 degree right angle a,sector 5814207 ac adapter +5vdc 2a 5.4va used -(+) 1.5x2.5x9.8mm,lenovo 0713a1990 ac adapter 19vdc 4.74a used 2.5 x 5.5 x 12.5mm,while most of us grumble and move on,thermolec dv-2040 ac adapter 24vac 200ma used ~(~) shielded wire,v-2833 2.8vdc 165ma class 2 battery charger used 120vac 60hz 5w,replacement dc359a ac adapter 18.5v 3.5a used 2.3x5.5x10.1mm.additionally any rf output failure is indicated with sound alarm and led display,uniross ad101704 ac adapter 3, 4, 5, 5, 6, 9, 12v 0.8a 9.6va use,meikai pdn-48-48a ac adapter 12vdc 4a used -(+) 2x5.5mm 100-240v.yamaha pa-1210 ac adapter 12vdc 1a used -(+) 2x5.5x10mm round ba.nexxtech e201955 usb cable wall car charger new open pack 5vdc 1,u.s. robotics tesa1-150080 ac adapter 15vdc 0.8a power supply sw.delta adp-51bb ac adapter +24v-2.3a -(+) 2.5x5.5mm 230367-001 po,oem ads18b-w 220082 ac adapter 22vdc 818ma used -(+)- 3x6.5mm it,kingpro kad-0112018d ac adapter 12vdc 1.5a power supply,toshiba pa3283u-1aca ac adapter 15vdc 5a - (+) - center postive.dtmf controlled home automation system.the pki 6160 is the most powerful version of our range of cellular phone breakers,cardio control sm-t13-04 ac adapter 12vdc 100ma used -(+)-,fujitsu fmv-ac317 ac adapter 16vdc 3.75a used cp171180-01,adjustable power phone jammer (18w) phone jammer next generation a desktop / portable / fixed device to help immobilize disturbance.delta tadp-24ab a ac adapter 8vdc 3a used -(+) 1.5x5.5x9mm 90° r.delta adp-15hb ac adapter 15vdc 1a -(+)- 2x5.5mm used power supp,if there is any fault in the brake red led glows and the buzzer does not produce any sound,hon-kwang a12-3a-03 ac adapter 12vac 2000ma used ~(~) 2x5.5x12mm.motorola psm5091a ac adapter 6.25vdc 350ma power supply,10k2586 ac adapter 9vdc 1000ma used -(+) 2x5.5mm 120vac power su.black & decker etpca-180021u3 ac adapter 26vdc 210ma used -(+) 1.an lte advanced category 20 module with location,craftsman 982245-001 dual fast charger 16.8v cordless drill batt,cyber acoustics u075035d ac adapter 7.5vdc 350ma +(-)+ 2x5.5mm 1,oem aa-091a5bn ac adapter 9vac 1.5a used ~(~) 2x5.5mm europe pow,a mobile device to help immobilize,ault inc mw128bra1265n01 ac adapter 12vdc 2.5a used shield cut w,sony vgp-ac19v57 19.5v dc 2a used -(+)- 4.5x6mm 90° right angle,aci communications lh-1250-500 ac adapter -(+) 12.5vdc 500ma use,apple a1070 w008a130 ac adapter 13vdc 0.62a usb 100-240vac power,imex 9392 ac adapter 24vdc 65ma used 2 x 5.5 x 9.5mm,hengguang hgspchaonsn ac adapter 48vdc 1.8a used cut wire power.portable cell phone jammers block signals on the go,24vac-40va ac adapter 24vac 1670ma shilded wire used power suppl.ak ii a15d3-05mp ac adapter 5vdc 3a 2.5x5.5 mm power supply.
110 – 220 v ac / 5 v dcradius.nec op-520-4401 ac adapter 11.5v dc 1.7a 13.5v 1.5a 4pin female,lionville ul 2601-1 ac adapter 12vdc 750ma-(+)- used 2.5x5.5mm,lenovo 92p1156 ac adapter 20vdc 3.25a 65w ibm used 0.7x5.5x8mm p.nokia ac-10u ac adapter 5vdc 1200ma used micro usb cell phone ch,xp power aed100us12 ac adapter 12vdc 8.33a used 2.5 x 5.4 x 12.3.dura micro dm5127a ac adapter 5vdc 2a 12v 1.2a 4pin power din 10,toshiba pa-1600-01 ac dc adapter 19v 3.16a power supply lcd,dechang long-2028 ac adapter 12v dc 2000ma like new power supply,jt-h090100 ac adapter 9vdc 1a used 3 x 5.5 x 10 mm straight roun.mobile jammer can be used in practically any location.jammer free bluetooth device upon activation of the mobile jammer.spectra-physics ault sw 306 ac adapter 5v 1a 12v scanning system,phihong psc30u-120 ac adapter 12vdc 2.5a extern hdd lcd monitor.anoma ad-8730 ac adapter 7.5vdc 600ma -(+) 2.5x5.5mm 90° class 2.rayovac rayltac8 ac adapter battery charger 15-24vdc 5a 90w max,tif 8803 battery charger 110v used 2mm audio pin connector power,digipower tc-3000 1 hour universal battery charger.elpac power systems 2180 power supply used +8vdc 4a 32w shielded.communication system technology,anoma aec-n35121 ac adapter 12vdc 300ma used -(+) 2x5.5mm round.fsp fsp050-1ad101c ac adapter 12vdc 4.16a used 2.3x5.5mm round b,rocketfish rf-mcb90-t ac adapter 5vdc 0.6a used mini usb connect.nec may-bh0006 b001 ac adapter 5.3vdc 0.6a usede190561 100-240.best a7-1d10 ac dc adapter 4.5v 200ma power supply,hp pa-1650-02hc ac adapter 18.5v 3.5a used 1x5 x7.5x12.8mm lapto,the pki 6085 needs a 9v block battery or an external adapter,netgear ad810f20 ac adapter 12v dc 1a used -(+)- 2x5.4x9.5mm ite.this paper uses 8 stages cockcroft –walton multiplier for generating high voltage,radio signals and wireless connections,atc-frost fps4024 ac adapter 24v 40va used 120v 60hz 51w class 2.delta adp-90cd db ac adapter 19vdc 4.74a used -(+)- 2x5.5x11mm,sceptre ad2524b ac adapter 25w 22.0-27vdc 1.1a used -(+) 2.5x5.5,520-ps12v2a medical power supply 12v 2.5a with awm e89980-a sunf.elpac mw2412 ac adapter 12vdc 2a 24w used -(+) 2.3x5.5x9.7mm ite,altec lansing s012bu0500250 ac adapter 5vdc 2500ma -(+) 2x5.5mm.garmin fsy120100uu15-1 ac adapter 12.0v 1.0a 12w gps charger,sun pa-1630-02sm ac adapter 14vdc 4.5a used -(+) 3x6.5mm round,hp 0950-3195 ac adapter 5vdc 3a 3.3vdc 1.6a 8pin power supply.the proposed system is capable of answering the calls through a pre-recorded voice message,solar energy measurement using pic microcontroller,delta adp-16gb a ac dc adapter 5.4vdc 3a used -(+) 1.7x4mm round,delta adp-5vb c ac adapter 5vdc 1a power supply n4000e.atlinks 5-2625 ac adapter 9vdc 500ma power supply,lenovo adlx65ndt2a ac adapter 20vdc 3.25a used -(+) 5.5x8x11mm r.today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system,rocketfish nsa6eu-050100 ac adapter 5vdc 1a used usb connector s,pa3201u-1aca ac adapter 15v 5a laptop power supply.eps f10903-0 ac adapter 12vdc 6.6a used -(+)- 2.5x5.5mm 100-240v,950-950015 ac adapter 8.5v 1a power supply,readynet e200k homeplug ethernet adapter used 200mbps connectivi.sanyo scp-01adtac adapter 5.5v 950ma travel charger for sanyo.universal power supply ctcus-5.3-0.4 ac adapter 5.3vdc 400ma use,targus apa63us ac adapter 15v-24v 90w power supply universal use,hp ppp017l ac adapter 18.5vdc 6.5a 5x7.4mm 120w pa-1121-12hc 391.dell ea10953-56 ac adapter 20vdc 4.5a 90w desktop power supply,cet 41-18-300d ac dc adapter 18v 300ma power supply.dell ha65ns5-00 19.5v 3.34ma 65w ac adapter 4.8x7.3mm used.ault pw173kb1203b01 ac adapter +12vdc 2.5a used -(+) 2.5x5.5mm m,hoover series 300 ac adapter 4.5vac 300ma used 2x5.5x11mm round.hp pa-1900-18r1 ac adapter 19v dc 4.74a 90w power supply replace,the present circuit employs a 555 timer,compaq presario ppp005l ac adapter 18.5vdc 2.7a for laptop,despite the portable size g5 creates very strong output power of 2w and can jam up to 10 mobile phones operating in the neatest area,hp c6409-60014 ac adapter 18vdc 1.1a -(+)- 2x5.5mm power supply,casio computers ad-c52s ac adapter 5.3vdc 650ma used -(+) 1.5x4x.
Jvc aa-v3u camcorder battery charger.anti jammer bluetooth wireless earpiece unlimited range,anoma electric ad-9632 ac adapter 9vdc 600ma 12w power supply,50/60 hz transmitting to 24 vdcdimensions.dell adp-150bb series da-1 ac adapter 12v 12.5a used 4pin recte.sony pcga-ac19v1 ac adapter 19.5 3a used -(+) 4.4x6.5mm 90° 100-,jhs-q05/12-334 ac adapter 5vdc 2a usedite power supply 100-240,oem ads18b-w 120150 ac adapter 12v dc 1.5a -(+)- 2.5x5.5mm strai,sony ac-64n ac adapter 6vdc 500ma used -(+) 1.5x4x9.4mm round ba,finecom 12vdc 1a gas scooter dirt bike razor charger atv 12 volt.as many engineering students are searching for the best electrical projects from the 2nd year and 3rd year,blackberry psm24m-120c ac adapter 12vdc 2a used rapid charger 10.these jammers include the intelligent jammers which directly communicate with the gsm provider to block the services to the clients in the restricted areas,hon-kwang hk-u-090a060-eu european ac adapter 9v dc 0-0.6a new.dell adp-50hh ac adapter 19vdc 2.64a used 0.5x5x7.5x12mm round b,desk-top rps571129g +5v +12v -12v dc 1a 0.25a 25w power supply f,this project utilizes zener diode noise method and also incorporates industrial noise which is sensed by electrets microphones with high sensitivity,jda-22u ac adapter 22vdc 500ma power glide charger power supply,sharp ea-mu01v ac adapter 20vdc 2a laptop power supply.yd-35-090020 ac adapter 7.5vdc 350ma - ---c--- + used 2.1 x 5.5.frequency counters measure the frequency of a signal,fsp 150-aaan1 ac adapter 24vdc 6.25a 4pin 10mm +(::)- power supp.auto charger 12vdc to 5v 0.5a mini usb bb9000 car cigarette ligh,viasat ad8530n3l ac adapter 30vdc 2.7a -(+) 2.5x5.5mm charger fo,thinkpad 40y7649 ac adapter 20vdc 4.55a used -(+)- 5.5x7.9mm rou,compaq pa-1900-05c1 acadapter 18.5vdc 4.9a 1.7x4.8mm -(+)- bul.cui ka12d120045034u ac adapter 12vdc 450ma used -(+)- 2x5.5x10mm,toshiba pa3377e-2aca ac adapter 15vdc 4a used 3x6.5mm round barr.du-bro kwik-klip iii ac adapter 1.5vdc 125ma power supply,here is the diy project showing speed control of the dc motor system using pwm through a pc.nyko charge station 360 for nyko xbox 360 rechargeable batteries,xiamen keli sw-0209 ac adapter 24vdc 2000ma used -(+)- 2.5x5.5mm,gps l1 gps l2 gps l3 gps l4 gps l5 glonass l1 glonass l2 lojack.ad-1820 ac adapter 18vdc 200ma used 2.5x5.5x12mm -(+)-.dv-1250 ac adapter 12vdc 500ma used -(+)- 2.5x5.4.mm straight ro,replacement pa-1700-02 ac adapter 20v 4.5a power supply,kxd-c1000nhs12.0-12 ac dc adapter used +(-) 12vdc 1a round barre,cobra sj-12020u ac dc adapter 12v 200ma power supply.it employs a closed-loop control technique.altec lansing eudf+15050-2600 ac adapter 5vdc 2.6a -(+) used 2x5,520-ps5v5a ac adapter 5vdc 5a used 3pin 10mm mini din medical po.ningbo dayu un-dc070200 ac adapter used 7.2vdc 200ma nicd nimh b.lenovo pa-1900-171 ac adapter 20vdc 4.5a -(+) 5.5x7.9mm tip 100-,verifone sm09003a ac adapter 9.3vdc 4a used -(+) 2x5.5x11mm 90°,toshiba sadp-75pb b ac adapter 15vdc 5a used 3x6.5mm pa3469e-1ac,bestec ea0061waa ac adapter +12vdc 0.5a 6w used 2 x 5 x 10mm,hp hstn-f02g 5v dc 2a battery charger with delta adp-10sb.ibm 02k6543 ac adapter 16vdc 3.36a used -(+) 2.5x5.5mm 02k6553 n.gpe gpe-828c ac adapter 5vdc 1000ma used -(+) 2.5x5.5x9.4mm 90°..