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Figure 1. Major shifts in underlying platforms. How the Internet of Things Now Drives Location Technology The number of devices connecting to the Internet is growing fast. The applications running on them require location context to determine the most likely use case. These devices need continuous location — not necessarily noticed or activated by the user, but always on. The specification that becomes important is energy per day: the device must maintain its location without draining its battery — and increase location availability indoors. That creates new design requirements for hybrid capability. By Greg Turetzky A lot of people have the opinion that the GNSS market is kind of flat. Actually, several different market studies would indicate that it’s not as flat as you would think. See FIGURE 2, taken from the European GNSS Agency’s (GSA’s) 2015 GNSS Market Report. The growth rate certainly is slowing, but any market that continues to grow at a 9 percent annual growth rate is a very nice target area. As you can see, the GSA expects that we’re going to have somewhere in the neighborhood of 7 billion devices within the next eight to ten years. Figure 2. Installed base of GNSS devices by region; the GNSS market continues to grow at a rapid pace. Source: GSA GNSS Market Report. We’re getting to the point where the number of GNSS receivers exceeds the population of the planet, which makes for an interesting thought process as to where GNSS is going to end up, and how it’s going to have to end up in everything that we do. That makes for a nice market opportunity. A big reason for that is we’ve seen a lot of growth in demand for multi-constellation GNSS. Everything pretty much has GPS in it that everyone terms as GNSS, but the growth of these other constellations is happening relatively quickly. FIGURE 3, in my opinion, is already significantly out of date, even though it is less than a year old. Other market estimates indicate that GLONASS penetration into receivers, especially in the mobile phone field, is closer to 70 or 80 percent today, and that is expected to grow. There’s really no technical or economic reason why GNSS receivers can’t support multiple constellations, even at the consumer mobile device level. Figure 3. Multi-constellation trends: GNSS capability in receivers. Source: GSA GNSS Market Report. Once all those constellations are in place, let’s look at where those receivers are going from a market standpoint. FIGURE 4 is divided by revenue, which is an interesting way to do it because we all know if you divided it by actual units, then the location-based services (LBS) portions in phones would dominate everything; everything else would just be a sliver that wouldn’t be visible. But if you look at it from a revenue standpoint, there are still many revenue opportunities in the phone segment and in the automotive segment. Figure 4. GNSS market segments, cumulative core revenue2012–2022. Source: GSA GNSS Market Report. Another reason to expect continued market growth is, if you examine Figure 4, you’ll notice that the Internet of Things (IoT) category (see SIDEBAR) doesn’t even show up here. We’ll see going forward that there will be a new slice of pie showing a focus on that segment and those types of applications. Intel and the Internet of Things Intel’s mission is no longer only to build PCs. We’re about bringing smart, connected devices to everyone. That encompasses a range of products, and we’ve been expanding our portfolio appropriately. We start with everything from big iron data centers (which are part of smart devices) to mobile clients and all the way down to the Internet of Things (IoT) and wearable devices. All those devices are part of this smart connected world. Our group’s job is to help on the connectivity side, which varies by product. This whole idea expands beyond mobile phones and into the IoT, a big trend whose methodology is transforming business, starting at sensors all the way up to big data, to make interesting decisions. The number of devices that are being able to connect to the Internet is growing faster than anybody can keep up with, and that creates a really interesting opportunity. That gives you a bit of a picture as to why Intel is interested in this market and where you’re going to see us playing. Looking at how we provide this location capability beyond just GNSS, how are people determining their location in these different platforms, and what are the different technologies available? FIGURE 5 shows that in 2014–2015 the most popular technology is still GPS, but there is a fast-growing trend in both Bluetooth-enabled and Wi-Fi-enabled penetration of location technology. Both of these are more suited to indoor operation, where the market is still in its early stages. Figure 5. Alternative location technology shipments, world market forecast: 2010–2018. Source: ABI Location Technologies Market Data. Although GNSS continues to grow with market growth, the growth of other technologies and the ability to incorporate them into location solutions is growing pretty quickly, and the radio versions of those are, in general, growing the fastest, followed by the inertial sensors. I think we’re going to see this combination of location technologies, jointly providing a single answer, becoming the norm in mobile products. These technologies are going to end up, especially for indoors, in different areas. FIGURE 6 shows a huge growth, not only growth but segmentation among a bunch of different types of venues, all of which seem to be adopting an indoor location methodology. Not all of them will adopt the same one, but all these types of venues are looking at that market and are looking at potential different technologies to serve their needs. What might be most appropriate in a grocery store — geared towards finding a particular item — like a Bluetooth beacon might be less interesting in an airport, where there’s still a need for navigation from place to place, where proximity is not necessarily the right answer. Figure 6. Indoor location technology installations by vertical market, world market forecast, 2010–2018. Source: ABI. We see a large growth of a very disparate technology base; at the right of the figure is a pie chart where I had to remove all the callouts, the list of all the different technology suppliers addressing these particular indoor markets. What you see is a highly fragmented supplier base; that’s very consistent with an early market implementation. There’s a lot of different people attempting to get into this market with a lot of different solutions. This is pretty classic for an early-adopter scenario. The Stack. Changing accuracy requirements will come up a bit later in this article. Once we’ve looked at where those different venues are from a requirements standpoint, we start to look at the types of companies that are trying to participate in the ecosystem required to do that (FIGURE 7). If you start from the bottom, where I live as a chipset manufacturer, and you move up the chain, you see seven different layers of people in the creation of a location to the end user, especially indoors. And every single person you see in this value chain is trying to make money. Figure 7. LBS value chain: a highly complex ecosystem with each segment looking to differentiate and monetize indoor location. Source: GSA GNSS Market Report. That’s the crux of the issue: a lot of people want a piece of that pie, and all of them have a relevant part to play, but when seven people in the stack are all trying to own the location result in order to monetize it, it becomes difficult to create a unified methodology. I live at the bottom of this complex ecosystem, in the technology implementation layer. Getting dollars to flow from the top to the bottom gets relatively difficult, so we are very driven to bring cost competitiveness into this market. In summary, from a market standpoint, we see that the market opportunity is very big and still growing. This makes it interesting to a company like Intel, even though we aren’t a major player in the business today, to continue to invest in it. We see a trend going from GPS to GNSS and on to location, and now the big opportunity is indoor location. But this indoor-location market is not a stand-alone device opportunity. Indoor location requires this kind of technology inside other devices, inside phones and tablets and IoT types of things. Context. Let’s look at indoor location as a feature in a larger portion of product. That idea comes from the requirement for location not just for the location itself, but in order to provide context. That’s critical because now these smart, mobile devices are not just used to make phone calls, but are used all the time. As a result, many applications running on them really require that location context to determine the most likely use case that the device is currently operating, making the consumer experience easier and more natural. This is evident throughout the entire value chain from phones and tablets to wearables. If you think about that from a requirement standpoint, you see the major places where GNSS has enabled trend changes in the market. Let’s step back a bit in history to go through FIGURE 1, the opening figure, horizontally. In the early 2000s when I was at SiRF Technology, the main market drivers were personal navigation devices (PNDs). There were all these dashboard-mounted PNDs, and the main things we were trying to fix was the urban-canyon problem. GPS always worked well in the rural areas but always had trouble in urban canyons; to fix that, we had to improve the sensitivity. The solution in that timeframe was with multi-correlator designs and improved RF frontends; we were able to improve the sensitivity of the receivers by a good 5–10 dB, which enabled us to really keep the antennas inside the car so that there was no need for roof-mounted antennas. The PND could be mounted on the dash and work just fine. That was a big factor in improving the user experience. The secondary specification that enabled that market to grow quickly was time-to-first-fix; those devices had to power-up and work fast to prevent user frustration. Within about five years, however, the PND market was overtaken by growth in the feature phone market. The reason for that was the FCC E911 mandate; everyone had to figure out a way to make sure that phones sold in the United States had the ability to meet that 911 mandate. GPS was one of the major methodologies in meeting that, and the main driver there was not around sensitivity, it was improving first-fix times. The mandate required a 30-second TTFF implementation in a very challenged environment to support emergency-services dispatch. This led us to the development of assisted GPS (AGPS) and further integration into phones. We had a secondary requirement of continuing to improve the sensitivity, because now we had to deal with an even worse antenna in a handset. Once that was taken care of in the mid 2000s, the next thing we saw coming — and what’s coming now — is the change in GPS requirements for smartphone navigation. This comes from the huge growth of higher end smartphones that are running multiple applications driving the use-cases around LBS. How will the location be used to provide services, now that we can provide applications on that platform? Now the most important specification has become active power? Every time a GPS receiver is turned on for use in an LBS mode, you have to make sure that the power consumption is kept to a minimum, or no one will use those services. So the active power of the device became a very important specification that we were all trying to improve. The secondary specification we had to improve was the availability. This is where the advantage of multi-GNSS started to show up — using handsets for car navigation on Google map types of implementations. So the performance of smartphone navigation in the urban canyon became a big driver recently as the main use case. Impacts of New Requirements on Silicon Design Standby power reduction impacts SRAM is the leakiest component of typical design Needs to be reduced or ideally eliminated Non-continuous fix methods Ability to quickly save and restore state information Hybrid location solutions Support measurements from multiple radios Need to share radios, not duplicate chains Increased integration of of multiple radios on single die Need more interference rejection capability Ability to support concurrent radio operation on single die Next! What’s coming next is the idea that these wearables and IoT platforms are not just doing LBS on demand because of the currently active application. They are going to need continuous location. The device needs to provide location capability all the time, but it’s not necessarily going to be noticed by the user or activated by the user, so the specification that becomes important is energy per day. You want to make sure your device can maintain its location without draining its battery. Then we are also going to have to increase the availability of location into indoors to really fix this whole problem. And that will really move us into hybrid capability. If we look at those changes in the market and we look at how they’re going to impact the GNSS architecture, the first thing we want to look at is: Where is GNSS? FIGURE 8 is a plot that I’m sure everybody has and is hard to keep up to date. It looks at the satellites coming from the different satellite constellations. The important thing here is that we are approaching a timeframe where a significant uptick in the growth of satellites can send the numbers over 100. That can really have an impact on receiver design, if you’re building a multi-GNSS receiver and you have to deal with a hundred satellites. How are you going to do that? Figure 8. Projected number of satellites for each signal band. FIGURE 9 shows the relationship between the coherent period and the number of correlators required to search for one satellite in each constellation. We looked at particular scenarios — in this case, let’s say we are trying to do an outdoor location, so –130 dBm cold start test (FIGURE 10) with an initial frequency certainty of around 1 part per million (ppm). We wanted to look at the impact of the different constellations on doing that, and what it takes inside of the receiver to implement it. I’m not going to go into great detail here. But looking at those impacts in correlator counts, you can see the difference between building a GPS receiver that can do this and building a Galileo receiver that can do this. From the simplest one, that is, GLONASS, and from the most difficult one, which is Galileo, you see a 75x difference in the number of correlators required to do that, based on signal structure. This would indicate that, maybe from a cold start fix point of view, you might prefer a GLONASS implementation, and do GPS or Galileo later. Figure 9. Relationship between the coherent period and number of correlators requried to search for one satellite in each constellation. ±1 ppm local oscillator frequency uncertainty; ±10 kHz Doppler shift range; 50 percent Doppler bin overlap; 1/4-chip correlator spacing. Figure 10. Test scenarios, cold start test. If that specification was your primary concern, then you would look at how those requirements got implemented into those devices. In addition, you try to come down to these low levels of power consumption, maintain sufficient accuracy to support these applications, and be able to move this into a very small form factor. If we look at the relationship between the number of correlators required to search for each satellite and amount of silicon area that requires, we see a big difference in the growth of those, depending on which constellation you look at. But if you look at a hot start scenario (FIGURE 11) rather than a cold start and at a weaker signal level, which is the more common implementation in devices today, you see a different result. With an improved starting condition because we have better information on the oscillators and reduced other uncertainties producing a smaller search space, the silicon area impact is greatly reduced. Then we have to really look at reducing standby power. That means we need to look at static random-access memory (SRAM) because SRAMs are a horribly leaky component and create very large standby power, but they are what we’ve been using for years in the standalone GPS world. Figure 11. Test scenarios, hot start test. We also have to look at non-continuous fix methodologies: this idea of turning things on and off to save power, which relates back to the standby power issues. We also have to look at hybrids: How are we going to support measurements from multiple radios like Wi-Fi and Bluetooth that are becoming important for indoor location? How are we going to share those radios without just pasting them together? That involves integration onto single die, and looking at what happens on the silicon level, and at what happens when you try to run radios at the same time. What we have to work with, especially here at Intel, the home of Gordon Moore, is Moore’s Law. It is still working 30 years after it was proposed. Recently, we see that we are tracking this progression of constantly reducing device sizes and moving forward. The dates in FIGURE 12 are for the process technology nodes associated with a classical digital process. We are not at the 22-nanometer level today on GPS receivers, but we are moving down that curve. Figure 12. Moore’s Law in action: transistor scaling and improved performance. In GNSS terms, this means more gates and more memory for less cost, improved TTTF and sensitivity by allowing more search capability. Figure 13. Scaling also increases speed and reduces power. HIgher clock speed provides better search and more complex navigation algorithms. Obviously, when you move down that curve, you greatly increase your ability to add more gates to improve TTFF and sensitivity. More correlators help you search out more uncertainty faster. The other thing this does is allow us to run faster, to up the central processor unit (CPU) clockspeed. This allows more software capability to do things like process more advanced navigation algorithms, bring in more satellites from multiple GNSS, run very expansive Kalman filters, and look at hybrid technologies. It has also driven down the power, so that reducing the active power requirement that we had was kind of coming along with Moore’s law without a whole lot of effort. But now we’ve run into a problem: the parameter that we care more about, standby power, is actually going up. Although we are getting benefits out of Moore’s Law from speed and active power, we are actually having a problem. It’s increasing our standby power, which makes it difficult to go to these lower fix rates with faster restarts. You see a trend here. As you move down in technology nodes, you find that the more advanced technology nodes are less applicable to the smaller multi-purpose devices. This is part of the reason why you don’t see the mobile phone devices coming down as fast as you see the desktop devices coming towards those new technology nodes. This means some really significant silicon design challenges. We need to figure out how to take the advantages of Moore’s Law and maintain the benefits of smaller geometry, we need higher clock-speeds, and we need more memory for multi-constellation methodology and that gets lower active power and smaller size. But we have to figure out a way to not give up our standby power when we start moving down into these very small geometries. That will require some new methodologies, both at the chip level in terms of how we build silicon, and at the system design level, in terms of how we put these things together inside a mobile phone. What Intel Is Doing I can’t tell you what we haven’t done yet, but we look at location as an opportunity where the strength of Intel comes into play. We have very advanced silicon processors and we are bringing those to bear on the location technology problem — just starting in the last few years. Our goal is to provide a GNSS and location silicon solution with best-in-class performance based on Intel technology. Once we’ve done that at the silicon level, we’ll look at bringing the platform-level integration capability together. We have the ability to merge multiple location technologies. We have a platform-level capability to integrate hardware and software to solve the indoor location problem on a variety of platforms. To execute to Intel’s vision, we’re going to push this into a ubiquitous technology present in all these devices, so that we can improve the variants on these mobile products. Multiple Radios. That’s part of what’s driving the whole industry towards the kind of consolidation that we’ve seen: stand-alone chipsets are not the only (or even the preferred) way to solve this problem. Without some access to the system design level, we’re not able to solve this problem for mobile phones and IoT type devices. We’re going to see this trend — that we all see coming — of putting multiple radios onto a single die, because that does reduce cost and size as we try to get into watches. The 2015 Consumer Electronics Show brought out the new stuff. They’re talking about IoT buttons. We still have a ways to go; bringing that capability down to that size in a GNSS radio is a difficult problem. Once we start incorporating these different radios, such as Wi-Fi and Bluetooth, into this solution, we run back into the problem of the value chain: How to get everyone aligned in a device with these capabilities into a single unified solution? One of the problems a lot of us see with these mobile products is that they have a lot of application and they require a lot of interaction. We’d all like these devices to become smarter and present the information that we want, when we want it. A big part of that is the location context, and so that’s what we’re planning on doing: integrating that location context into all these platforms so that these smart connected devices can be even smarter and provide a better user experience. GREG TURETZKY is a principal engineer at Intel responsible for strategic business development in Intel’s Wireless Communication Group focusing on location. He has more than 25 years of experience in the GNSS industry at JHU-APL, Stanford Telecom, Trimble, SiRF and CSR. He is a member of GPS World’s Editorial Advisory Board. The statements, views, and opinions presented in this article are those of the author and are not endorsed by, nor do they necessarily reflect, the opinions of the author’s present and/or former employers or any other organization with whom the author may be associated. This article is based on a GPS World webinar, which sprang from a presentation at the Stanford PNT Symposium. Listener questions and Greg Turetzky’s answers during the webinar, which can be read here. The author would like to acknowledge the contribution of Figures 9, 10 and 11 from the paper “Optimal search strategy in a multi-constellatoin environment” by Intel colleagues Anyaegbu et al, from ION GNSS+ 2015.

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Ibm 09j4298 ac adapter 20vdc 3a 4pin09j4303 thinkpad power sup,dell fa90ps0-00 ac adapter 19.5vdc 4.62a 90w used 1x5x7.5xmm -(+,goldfar son-erik750/z520 ac car phone charger used.a mobile jammer is a device that is used to transmit the signals to the similar frequency,replacement 75w-hp21 ac adapter 19vdc 3.95a -(+) 2.5x5.5mm 100-2,texas instruments zvc36-13-e27 4469 ac adapter 13vdc 2.77a 36w f,yardworks cs24 battery charger cc 24vdc usednca 120v~60hz ac,sony ac-v316a ac adapter 8.4vdc 1.94a used 110-240vac ~ 50/60hz,jvc ap-v13u ac adapter 11vdc 1a power supply charger.apple h1300 ac adapter 7vdc 0.5a used -(+) 1.5x4.5x9.4mm round b,dechang long-0910b ac dc adapter 9v dc 1a 2 x 5.5 x 10.2mm used,please see the details in this catalogue.eng 3a-122wp05 ac adapter 5vdc 2a -(+) 2.5x5.5mm black used swit,t027 4.9v~5.5v dc 500ma ac adapter phone connector used travel,viewsonic hasu05f ac adapter 12vdc 4a -(+)- 2x5.5mm hjc power su.nokiaacp-12x cell phone battery uk travel charger.cambridge tead-48-091000u ac adapter 9vdc 1a used 2 x 5.5 x 12mm,replacement 65w-ap04 ac adapter 24vdc 2.65a used - ---c--- +,replacement ppp003sd ac adapter 19v 3.16a used 2.5 x 5.5 x 12mm.sun pa-1630-02sm ac adapter 14vdc 4.5a used -(+) 3x6.5mm round,coleco 74942 ac adapter +5vdc 0.9a -5v 0.1a +12v 0.3a used 4pin.a mobile jammer circuit is an rf transmitter,acbel api4ad20 ac adapter 15v dc 5a switching power supply adapt.canon pa-v2 ac adapter 7v 1700ma 20w class 2 power supply,zyxel a48091000 ac adapter 9v 1000ma used 3pin female class 2 tr.2110 to 2170 mhztotal output power,zip drive ap05f-uv ac adapter 5vdc 1a used -(+)- 2.4 x 5.4 x 10,recoton adf1600 voltage converter 1600w 500watts,ibm 22p9003 ac adapter 16vdc 0-4.55a used -(+)- 2.5x5.5x11mm.ilan f1960i ac adapter 19v 3.42a 34w i.t.e power supply.

Jvc aa-r1001 ac adapter 10.7vdc 3a used -(+)- 2.5x5.5mm 110-240v.vivanco tln 3800 xr ac adapter 5vdc 3800ma used 2.5 x 5.4 x 12 m,yixin electronic yx-3515a1 ac adapter 4.8vdc 300ma used -(+) cut.finecom i-mag 120eu-400d-1 ac adapter 12vdc 4a -(+) 1.7x4.8mm 10,ttx23073001 ac adapter 5v 1a wallmount charger i.t.e power suppl.pa-1700-02 replacement ac adapter 18.5v dc 3.5a laptop power sup.buslink fsp024-1ada21 12v 2.0a ac adapter 12v 2.0a 9na0240304.wowson wde-101cdc ac adapter 12vdc 0.8a used -(+)- 2.5 x 5.4 x 9,apd da-2af12 ac adapter used -(+)2x5.5mm 12vdc 2a switching powe,motorola ssw-2285us ac adapter 5vdc 500ma cellphone travel charg,the light intensity of the room is measured by the ldr sensor,kodak k4500-c+i ni-mh rapid batteries charger 2.4vdc 1.2a origin.compaq series 2842 ac adapter 18.5vdc 3.1a 91-46676 power supply,braun 5 497 ac adapter dc 12v 0.4a class 2 power supply charger.solar energy measurement using pic microcontroller,delta eadp-36kb a ac adapter 12vdc 3a used -(+) 2.5x5.5mm round,jammer disrupting the communication between the phone and the cell phone base station in the tower.energizer ch15mn-adp ac dc adapter 6v 4a battery charger power s,to duplicate a key with immobilizer.additionally any rf output failure is indicated with sound alarm and led display,phihong psa31u-050 ac adapter 5vdc 4a used -(+)- 5 pin din ite p.adapter ads-0615pc ac adapter 6.5vdc 1.5a hr430 025280a xact sir,axis a41208c ac dc adapter 12v 800ma power supply,2 w output power3g 2010 – 2170 mhz,this out-band jamming signals are mainly caused due to nearby wireless transmitters of the other sytems such as gsm,nexxtech 2200502 ac adapter 13.5vdc 1000ma used -(+) ite power s,35-9-300c ac adapter 9vdc 300ma toshiba phone system used -(+),eng 41-12-300 ac adapter 12vdc 300ma used 2 x 5.4 x 11.2 mm 90 d,liteonpa-1121-02 ac adapter 19vdc 6a 2x5.5mm switching power,the if section comprises a noise circuit which extracts noise from the environment by the use of microphone.

Aplha concord dv-1215a ac adapter 12vac,-20°c to +60°cambient humidity,go through the paper for more information,this covers the covers the gsm and dcs.iluv dsa-31s feu 5350 ac adapter 5.3v dc 0.5a used 2x5x6.2mm 8pi,drone signal scrambler anti drone net jammer countermeasures against drones jammer.5% – 80%dual-band output 900.sony ac-940 ac adapter 9vdc 600ma used +(-) 2x5.5x9mm round barr,car charger power adapter used portable dvd player usb p,sony ericsson 316ams43001 ac adapter 5v dc 400ma -(+)- 0.5x2.5mm.hewlett packard series hstnn-la12 19.5v dc 11.8a -(+)- 5.1x7.3.vehicle unit 25 x 25 x 5 cmoperating voltage,panasonic pqlv219 ac adapter 6.5vdc 500ma -(+) 1.7x4.7mm power s.apple a1021 ac adapter 24vdc 2.65a desktop power supply power bo.backpack ap14m ac dc dual voltge adapter 5v 1a 12vdc 0.75a 5pin,hp compaq ppp009l ac adapter 18.5vdc 3.5a used -(+) with pin ins,kramer scp41-120500 ac adapter 12vdc 500ma 5.4va used -(+) 2x5.5.mb132-075040 ac adapter 7.5vdc 400ma used molex 2 pin direct plu,listen to music from jammerbag ’s library (36,3500g size：385 x 135 x 50mm warranty：one year.canon cb-5l battery charger 18.4vdc 1.2a ds8101 for camecorder c,aciworld 48-7.5-1200d ac adapter 7.5v dc 1200ma power supply,compaq pa-1600-02 ac adapter 19vdc 3.16a used 2 x 4.8 x 10mm,mkd-350900300 ac adapter 9vdc 300ma used -(+) 1.7x5.5x12mm round,cwt paa050f ac adapter 12vdc 4.16a used 2.5x5.5mm -(+) 100-240va,this system does not try to suppress communication on a broad band with much power.sony ac-l15b ac dc adapter 8.4v 1.5a power supply for camcorder,ii mobile jammermobile jammer is used to prevent mobile phones from receiving or transmitting signals with the base station.ktec ksaa0500120w1us ac adapter 5vdc 1.2a new -(+)- 1.5x4mm swit,a total of 160 w is available for covering each frequency between 800 and 2200 mhz in steps of max.

A cell phone jammer is an small equipment that is capable of blocking transmission of signals between cell phone and base station,condor hk-h5-a05 ac adapter 5vdc 4a used -(+) 2x5.5mm round barr,conair 0326-4108-11 ac adapter 1.2v 2a power supply,best a7-1d10 ac dc adapter 4.5v 200ma power supply,commercial 9 v block batterythe pki 6400 eod convoy jammer is a broadband barrage type jamming system designed for vip,coleman cs-1203500 ac adapter 12vdc 3.5a used -(+) 2x5.5x10mm ro.three circuits were shown here,design your own custom team swim suits,bi bi07-050100-adu ac adapter 5vdc 1a used usb connector class 2.canon ca-560 ac dc adapter 9.5v 2.7a power supply,philips 4120-0115-dc ac adapter 1.3v dc 1500ma used 2x5.4x20.3mm,using this circuit one can switch on or off the device by simply touching the sensor,today´s vehicles are also provided with immobilizers integrated into the keys presenting another security system.liteon pa-1900-34 ac adapter 19v dc 4.74a used 1.7x5.5x11.2mm,archer 23-131a ac adapter 8.1vdc 8ma used direct wall mount plug,cui epa-121da-12 12v 1a ite power supply,dell da90ps2-00 ac adapter c8023 19.5v 4.62a power supply,kings ku2b-120-0300d ac adapter 12v dc 300ma power supply,ppp003sd replacement ac adapter 18.5v 6.5a laptop power supply.intercom dta-xga03 ac adapter 12vdc 3a -(+) 1.2x3.5mm used 90° 1,download the seminar report for cell phone jammer.basler electric be116230aab 0021 ac adapter 5v 30va plug-in clas.mybat hs-tc002 ac adapter 5-11vdc 500ma used travel charger powe.finecom ac adapter yamet plug not included 12vac 20-50w electron.the present circuit employs a 555 timer.acbel api4ad32 ac adapter 19v 3.42a laptop charger power supply.nikon eh-64 ac adapter 4.8vdc 1.5a -(+) power supply for coolpix,creative ys-1015-e12 12v 1.25a switching power supply ac adapter,nyko 86070-a50 charge base nyko xbox 360 rechargeable batteries.dell zvc65n-18.5-p1 ac dc adapter 18.5v 3.a 50-60hz ite power.

The third one shows the 5-12 variable voltage,ac car adapter phone charger 2x5.5x9.5cm 90°right angle round ba,audiovox plc-9100 ac adapter 5vdc 0.85a power line cable,texas instruments xbox 5.1 surround sound system only no any thi.gestion fps4024 ac adapter 24vdc 10va used 120v ac 60hz 51w,lei power converter 220v 240vac 2000w used multi nation travel a,channex tcr ac adapter 5.1vdc 120ma used 0.6x2.5x10.3mm round ba.replacement tj-65-185350 ac adapter 18.5vdc 3.5a used -(+) 5x7.3,nokia acp-7e ac adapter 3.7v 355ma 230vac chargecellphone 3220,ad3230 ac adapter 5vdc 3a used 1.7x3.4x9.3mm straight round,350-086 ac adapter 15vdc 300ma used -(+) 2x5.5mm 120vac straight,battery charger 514 ac adapter 5vdc 140ma used -(+) 2x5.5mm 120v,motomaster eliminator bc12v5a-cp ac charger 5 12v dc 5a.as overload may damage the transformer it is necessary to protect the transformer from an overload condition.sceptre ad1805b 5vdc 3.7a used 3pin mini din ite power supply,ultra ulac901224ap ac adapter 24vdc 5.5a used -(+)5.5x8mm power,skil class ii battery charger 4.1vdc 330ma used flexi charge int,are freely selectable or are used according to the system analysis.hp pa-1900-32hn ac adapter 19vdc 4.74a -(+) 5.1x7.5mm used 100-2,motorola 527727-001-00 ac adapter 9vdc 300ma 2.7w used -(+)- 2.1.panasonic cf-aa1526 m3 ac adapter 15.1vdc 2.6a used pscv390101.kross st-a-090-003uabt ac adapter 15v 16v 18v (18.5v) 19v(19.5.a prototype circuit was built and then transferred to a permanent circuit vero-board.eng 3a-154wp05 ac adapter 5vdc 2.6a -(+) used 2 x 5.4 x 9.5mm st.dell aa22850 ac adapter 19.5vdc 3.34a used straight round barrel,uttar pradesh along with their contact details &,sony pcga-ac16v ac adapter 19.5vdc 4a used -(+) 4x6mm tip 100-24,sunny sys1308-2415-w2 ac adapter 15vdc 1a -(+) used 2.3x5.4mm st,set01b-60w electronic transformer 12vac 110vac crystal halogen l,toshiba pa3755e-1ac3 ac adapter 15vdc 5a used -(+) tip 3x6.5x10m.

Cui inc epa-201d-12 ac adapter 12vdc 1.66a used 8 pin mini din c,tdp ep-119/ktc-339 ac adapter 12vac 0.93amp used 2.5x5.5x9mm rou,viewsonic api-208-98010 ac adapter 12vdc 3.6a -(+)- 1.7x4.8mm po,citizen dpx411409 ac adapter 4.5vdc 600ma 9.5w power supply,ad-1200500dv ac adapter 12vdc 0.5a transformer power supply 220v..

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