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Supplying TPS61200 With a Single Solar Cell - Texas Instruments

This application report explains how to use the TPS61200 in combination with a single solar cell to charge a battery or storage device. A characteristic of solar cells is the internal resistance that can vary from less than 10 Ω up to more than 100 Ω. Therefore, it is important to control the load placed on the solar cell to ensure a reliable start-up of the application. This report describes an application that avoids the solar cell output voltage breaking down and manages the load as the solar cell power changes. The solution provides a reliable start-up of the TPS61200 using solar cells that can deliver at least 3 mA at 0.5 V. Solar Cell Knowledge In general, solar cells can be classified into two types, crystalline silicon solar cells and amorphous silicon solar cells on float glass. Both types have certain benefits in specific applications as a power source. Usually, the crystalline silicon solar cell has better efficiency compared to the amorphous silicon solar cell. On the other hand, the amorphous silicon solar cell is more sensitive to stray light than the crystalline solar cell. This does not totally compensate the lower efficiency but brings both types close together. The amorphous silicon solar cells cost less than crystalline solar cells. The power that can be drawn from a solar cell depends on the physical size and type of the cell – the smaller the solar cell, the less power it can deliver. For some applications, it can be beneficial to use solar cells in series to increase the module output voltage instead of boosting from a single solar cell. For ultralow power applications, this yields better efficiency numbers compared to what is achievable with a single-cell configuration with a nominal output voltage of 0.5 V. When using solar cells, it is important to consider what kind of light source is available. Sunlight delivers much more energy than artificial light. A bulb lamp is better than a fluorescent lamp. Therefore, it is necessary to match the solar cell with the application and the light condition for which it is used . Crystalline silicon solar cells work best if used outside with sunlight. For indoor use, amorphous silicon solar cells are more suitable. This type of solar cells has a different light sensitivity which fits the spectrum of artificial light much better than crystalline solar cells. Prepared for both light conditions is the stacked type of solar cells. It is build of two thin layers of amorphous silicon with a different spectral light sensitivity and stacked on top of each other. This kind of solar cell is working with a much wider spectrum of light than any other type. Therefore it is ideal for hand-held devices which can be used indoor and outdoor.

Phishing Scam Ensnares Almost 2,000 Justice Department Staff

OTTAWA - Many of the Justice Department's finest legal minds are falling prey to a garden-variety Internet scam. An internal survey shows almost 2,000 staff were conned into clicking on a phoney "phishing" link in their email, raising questions about the security of sensitive information. The department launched the mock scam in December as a security exercise, sending emails to 5,000 employees to test their ability to recognize cyber fraud. The emails looked like genuine communications from government or financial institutions, and contained a link to a fake website that was also made to look like the real thing. Across the globe, an estimated 156 million of these so-called "phishing" emails are sent daily, and anyone duped into clicking on the embedded web link risks transferring confidential information — such as online banking passwords — to criminals.

Phishing Scam Ensnares Almost 2,000 Justice Department Staff

OTTAWA - Many of the Justice Department's finest legal minds are falling prey to a garden-variety Internet scam. An internal survey shows almost 2,000 staff were conned into clicking on a phoney "phishing" link in their email, raising questions about the security of sensitive information. The department launched the mock scam in December as a security exercise, sending emails to 5,000 employees to test their ability to recognize cyber fraud. The emails looked like genuine communications from government or financial institutions, and contained a link to a fake website that was also made to look like the real thing. Across the globe, an estimated 156 million of these so-called "phishing" emails are sent daily, and anyone duped into clicking on the embedded web link risks transferring confidential information — such as online banking passwords — to criminals.

Phishing Scam Ensnares Almost 2,000 Justice Department Staff

OTTAWA - Many of the Justice Department's finest legal minds are falling prey to a garden-variety Internet scam. An internal survey shows almost 2,000 staff were conned into clicking on a phoney "phishing" link in their email, raising questions about the security of sensitive information. The department launched the mock scam in December as a security exercise, sending emails to 5,000 employees to test their ability to recognize cyber fraud. The emails looked like genuine communications from government or financial institutions, and contained a link to a fake website that was also made to look like the real thing. Across the globe, an estimated 156 million of these so-called "phishing" emails are sent daily, and anyone duped into clicking on the embedded web link risks transferring confidential information — such as online banking passwords — to criminals. The Justice Department's mock exercise caught 1,850 people clicking on the phoney embedded links, or 37 per cent of everyone w

Series 15710 Rear Terminal ATC Fuse Panel - Cooper Industries

Series 15710 Rear Terminal ATC Fuse Panel Power Distribution The Rear Terminal ATC® Fuse Panel (RTA) is a rear-fed panel with high component retention, which makes it an ideal choice for high vibration environments including construction, agriculture, bus, RV, heavy trucking equipment, etc. It is available in multiple lengths and internal bussing configurations. This allows for up to three separate power input circuits and 32 individual output circuits. Specifications Input Terminal Rating: 1/4-20 stud; Quick-connect terminals provided on middle bus (Series 15713). 200A max total input for unit. Output Terminal Rating: 30A max load per circuit. Temperature Rating: –40°F (–40°C) to 260°F (125°C) Materials: Black thermoplastic. Termination: Delphi Packard Pack-Con® Series 3 & 5.* Input Wire Size: #4-6 AWG Output Wire Size: #10-16 AWG Torque Rating: 50 in-lbs (5.6N m) max. Mounting Torque Rating: #10-32 threaded inserts, 24 in-lbs (2.7N m) max torque. Fuse Panels Options Positions: 8-32 Circuits available. Split Power: Single, dual, or triple bus options Cover: Splash-resistant covers available. Short cover for fuses only, and taller cover for use with circuit breakers Locks: Secondary locks available for securing of output terminals (#15710-TP). (Comes in multiples of 8 positions. Must order multiple strips to cover length of selected RTA.) Tools: Output terminal removal tool (#HT15710-01). Secondary lock removal tool (#HT15710-02). *Electrical Terminals are NOT supplied by Cooper Bussmann. Dimensions - mm(in)

Data Sheet - Farnell
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Specifications Input Terminal Rating: #10-32 Threaded studs (100A max). Output Terminal Rating: 30A Max per circuit. Temperature Rating: –20°F (0°C) to 150°F (65°C). Materials: Black thermoplastic. Termination: .250" x .032" quick-connect terminals. Ground terminal pad option available. Input wire size: #4-6 AWG. Output wire size: #12-16 AWG. Torque Rating: 20 in-lbs (2.25N m) max. Mounting Torque Rating: 8 in-lbs (0.9N m) max. Power Distribution The 15600 ATC® fuse panel is a compact, yet rugged, power distribution module. It is available in a single or dual internal buss electrical configuration featuring an optional ground pad terminal strip. The 15600 fuse panel is surface mounted, uses convenient quick-connect terminals, and is recommended as a supplemental power distribution module. It can be used to accompany main PDMs such as the Cooper Bussmann 31000/32000 Series VEC/DVEC, 15710 Series RTA, and the 1540X Series RFRM. Fuse Panels Options Positions: 4-20 circuits available. Split Power: Single or dual buss options. Dimensions - mm(in) 15600 Series 15602 Series .22" DIA. HOLE WITH .41 x .12 DEEP C'BORE (4X) "L" "L" "C" "C" Series 15600 85.59 (3.37) 26.92 (1.06) 26.92 (1.06") 63.50 (2.50) 15.75 (.62) .250" QC (COPPER ALLOY - TIN PLATED) No. of Fuse 15.75 TYP (.62") 20.32 (.80) 30.98 (1.22) Ground Terminal Base Option (12) .250" QC TERMINALS W/COMMON WIRING STUD, ADD 1.300" TO "L" FOR OVERALL LENGTH 04 06 08 10 12 (15600 -10-20 SHOWN)

How to Maximize ROI on your EHR
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Considering the work pressure created due to healthcare reforms, practices are left with less or no time at all to focus on choosing EHR vendors, mobilize resources or train the internal staff. Many practices across the US have outsourced their EHR requirements to MedicalBillersandCoders.com.

An Abney Associates Fraud Awareness Program: Mock email scam ensnares hundreds of bureaucrats

Mock email scam ensnares hundreds of bureaucrats at Justice Canada OTTAWA – Many of the Justice Department’s finest legal minds are falling prey to a garden-variety Internet scam. An internal survey shows almost 2,000 staff were conned into clicking on a phoney “phishing” link in their email, raising questions about the security of sensitive information.

Digital SLR photography guide
by darwis 0 Comments favorite 10 Viewed Download 0 Times

Created by James Ryan Carssow © 2009 Digital SLR photography guide by Ryan Carssow, © 2009 Why buy/use a digital SLR camera? • • • • • flexibility speed manual control to take your photographic possibilities beyond the limitations of “point and shoot” better inherent image quality because of larger imaging sensors and more sophisticated exposure meters and autofocus systems What is a DSLR camera and how is it different from other types of digital cameras? • DSLR = digital single lens reflex . An internal mirror reflects the view directly from the photographic lens into the viewfinder. When the button is pressed to take a photo, this mirror is instantly pulled upward (this is the “clicking” or “tapping” noise you hear) and out of the way of the shutter, which slides open to expose the imaging sensor (the digital “film”). Because you see directly through the photographic lens, there is no need for a second “viewing” lens (as with older camera designs), thus – single lens reflex. • The SLR design is superior to other designs because it allows the photographer to see through the viewfinder exactly what is seen through the lens and what will be “seen” by the imaging sensor. When looking through the viewfinder of non -SLR cameras, the image seen is not exactly the same that the imaging sensor or film “sees”. • Point-n-shoot digital cameras have electronic LCD viewing screens at the rear of the camera that show a digital representation of the view through the lens. But an SLR is still the only camera style that allows a real-time optical view through the photographic lens. This inherently allows for faster and more precise operation of an SLR camera over other types. About user manuals and this guide DSLRs (and for that matter all digital cameras) are capable of many different options and uses. Learning to use a digital camera is in some ways like learning to use a computer or cell phone or any other electronic device.

Optimization of Message Encryption for Distributed Embedded ... - IDA

In this paper we consider distributed embedded systems in which privacy or confidentiality of the internal communication is critical, and present an approach to optimizing cryptographic algorithms under strict timing constraints. We have developed a technique to search for the best system-affordable cryptographic protection for the messages transmitted over the internal communication bus. Towards this, we formulate the optimization technique in Constraint Logic Programming (CLP), which returns optimal results. However, CLP executions are computationally expensive and hence, we propose an efficient heuristic as an alternative. Extensive experiments demonstrate the efficiency of the proposed heuristic approach. Nowadays, more and more embedded systems are being employed, many of which take advantages of distributed computing due to functional requirements or pursuance for better performance and reliability, such as automated flight control systems and automotive embedded systems. A current high-end sedan, for example, has more than 50 embedded processors and Electronic Control Units (ECUs) connected by various communication infrastructures, e.g., CAN-bus [1]. Security is an important issue in designing many distributed embedded systems, but is seriously overlooked. The key concepts concerning security of distributed embedded system are confidentiality, integrity, availability, authenticity, and non-repudiation, among which confidentiality is very often of central importance. For example, the messages transmitted within an automated flight control system used in military battlefields are highly confidentiality-sensitive. Disclosure of one single message may affect the life of the pilot or even the situation of a whole battle.

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