A small and compact wireless remote control kit for your small loads (under 10W) momentary function switch. Design for any 3.7V 5V 6V 9V 12V device or light. Save yourself time by using a wireless remote to switch on your load from a distance. Features A simple relay that is easy to install and looks super cool. Perfect compact design for any low voltage device or light. Eliminate the trouble of messy wiring and time consuming work. Each unit has its own independent and unique frequency. Works up to 200 feet on level surfaces. Load turns on once button is depressed, release the button, loads turns off. Transmitter with built-in cell battery, receiver without cover. Specifications Item Type Switches Remote Distance 20 ~ 100m Certification CCC Voltage Range 3.5 ~ 12 V Max Current 1A Product Size 25 x 11 x 8 mm Package Contents 1 x Receiver1 x Transmitter
The remote control power socket provides you with the fastest and most affordable way to transform your home to a smart home. By using it, you can monitor your electronics' usage and cost, view the status of appliances in a real way. Features Can remotely cut off the power source of your appliance ensure the electrical safety. Can be used with any appliance that plugs in, including TV, router, rice cooker, lamp, air conditioner, and etc. Can be controlled by iOS or Android smartphone via WiFi/2G/3G/4G networks. Set up time to turn on/off through the app. Specifications Input Voltage AC 100-240V Max Rating 10A WiFi Standard IEEE801.11n Package Contents 1 x Smart Socket(FR plug)
Formerly known as Handbook of Power System Engineering, this second edition provides rigorous revisions to the original treatment of systems analysis together with a substantial new four-chapter section on power electronics applications. Encompassing a whole range of equipment, phenomena, and analytical approaches, this handbook offers a complete overview of power systems and their power electronics applications, and presents a thorough examination of the fundamental principles, combining theories and technologies that are usually treated in separate specialised fields, in a single unified hierarchy. Key features of this new edition: Updates throughout the entire book with new material covering applications to current topics such as brushless generators, speed adjustable pumped storage hydro generation, wind generation, small-hydro generation, solar generation, DC-transmission, SVC, SVG (STATCOM), FACTS, active-filters, UPS and advanced railway traffic applications Theories of electrical phenomena ranging from DC and power frequency to lightning-/switching-surges, and insulation coordination now with reference to IEC Standards 2010 New chapters presenting advanced theories and technologies of power electronics circuits and their control theories in combination with various characteristics of power systems as well as induction-generator/motor driving systems Practical engineering technologies of generating plants, transmission lines, sub-stations, load systems and their combined network that includes schemes of high voltage primary circuits, power system control and protection A comprehensive reference for those wishing to gain knowledge in every aspect of power system engineering, this book is suited to practising engineers in power electricity-related industries and graduate level power engineering students.
A groundbreaking book on solving our growing energy problems In this visionary book, leading energy industry executive Robert Hefner puts forth a convincing case about how the world can move beyond its current dependence on oil and toward a new era of clean, renewable energy. Written with the knowledge and authority of a major player in this industry, Hefner relates how misguided government policies and vested industry interests have contributed to our current energy problems and proposes a variety of measures that could encourage the use of natural gas, solar, wind, and hydrogen. Convincingly makes the case that natural gas is the essential bridge fuel to a new era of clean, renewable energy sources Details how natural gas can help break our oil and coal dependency Offers a sweeping, historic picture of the world energy situation Presents a compelling and provocative case that natural gas is key to our short-term energy problems A well-written and engaging book that mixes personal anecdotes and experiences with insightful analysis, The Grand Energy Transition is a powerful argument about how we can best solve our toughest energy problems.
This intelligent mini fan features with smart touch control, use one-touch shift to control soft wind/strong wind and close the fan, convenient to use. Comes with an attached PU leather hanger, it can stand on the desk or be hung on the wall. Dual Motor Unique dual motor design, 7 blades in front cooperate with the 5 blades in the back, produce gentle and natural wind, making you cool in hot summer. Smart Touch Control Gently touch any positions on the metal cylinder to turn on/off or control modes, easy to operate. Two Modes Adjustments The default mode after turning on is mute mode, the noise is as low as 40db, so you can enjoy quiet sleeping. Touch the fan to change to strong wind mode, simulate natural wind, bring you footloose, cool natural wind. Multiple Use Comes with an attached PU leather strap, it can stand on the desk or be hung on the wall. Convenient to use. Multiple Charging Ways Can be charged by power bank, 5V power charger or computer USB interface, convenient to charge anytime and anywhere. Specifications Brand VH Material Metal alloy+PP resin Power DC 5V, 500mA above USB port Air Strength(m/min) 120(strong wind), 90(mute) Noise 48(strong wind), 34(mute) USB Wire Length 100cm Package Contents 1 x Mini Fan
Description & Features Compatible with Bluetooth-enabled Devices Bluetooth technology lets you wirelessly listen to music and other audio. On-Ear Design With ear cushions and lightweight construction to ensure a custom fit for lasting comfort. Wireless & Wired Modes Enables you to use it by plugging USB cable to your PC even if it runs out of battery. Clear Surround Sound Offers broad mediant sound and extended bass response. Built-in Microphone Allows clear hands-free communication. Volume Control Button Allows to control the music streaming. Up to 10M Wireless Range The attached receiver can be controlled in 10m. 110dB Sensitivity Delivers powerful sound. USB Interfaces For simply connectivity. Built-in Rechargeable Lithium-ion Battery Offers up to 10 hours of wireless talk time per full charge and can easily be replenished from most USB power sources. 20Hz - 20kHz Speaker Frequency Response Ensures faithful sound reproduction. Support Memory Card Enjoy MP3 format music stored in the mini memory card. Adjustable & Foldable Headband For satisfy your optimal needs and easy to carry with you for travel and business trip. Specification Basic Brand: OVLENG Model: MX666 Name: Earphones Product Weight: 200gPackage Weight: 300gPackage Size: 21 x 19 x 9.5 cmPackage Include: 1 x Headphone, 1 x USB Cable, 1 x Manual Connectivity Bluetooth Version: V4.0+EDREffective Distance: 10 meters Convenience Call Control: YesVolume Control: YesFM: YesMemory Card: Yes Sound Frequency Range: 20-20KHz Speaker Diameter: 40mm Impedance: 32ΩMaximum Power Input: 40MwSound Pressure: 110dB±5db Power Talk Time: 8-10 hrs Music Playtime: 4-6 hrsBattery Capacity: 300mA Charging Voltage: DC 5V Working Voltage: DC 3.7V
G is for Genes shows how a dialogue between geneticists and educationalists can have beneficial results for the education of all children—and can also benefit schools, teachers, and society at large. Draws on behavioral genetic research from around the world, including the UK-based Twins’ Early Development Study (TEDS), one of the largest twin studies in the world Offers a unique viewpoint by bringing together genetics and education, disciplines with a historically difficult relationship Shows that genetic influence is not the same as genetic determinism and that the environment matters at least as much as genes Designed to spark a public debate about what naturally-occurring individual differences mean for education and equality
Record No. 79—14 of scientific-and-trial approbation of December 25, 2014. Research objective: Comprehensive assessment of influence on the recipient’s functional status of a revitalizing procedure carried out by the evaluated specialist. The approbated health improvement method is the proprietary methodology of bioenergy correction: Traditional Tibetan Massage Using Resonance Bowls as per Tcering Ngodrub Tradition (Viktor Ogui) on the basis of health-improving practices applying resonance bowls
Material: PA66 - Current: 6A - Voltage: 250V - Easy to use - Package includes 10pcs power switch
Material: Plastic + copper - Current: 6A - Voltage: 250V AC - Easy to use - Great for DIY project - Package includes 20pcs power switch
A unique approach to sensorless control and regulator design of electric drives Based on the author's vast industry experience and collaborative works with other industries, Control of Electric Machine Drive Systems is packed with tested, implemented, and verified ideas that engineers can apply to everyday problems in the field. Originally published in Korean as a textbook, this highly practical updated version features the latest information on the control of electric machines and apparatus, as well as a new chapter on sensorless control of AC machines, a topic not covered in any other publication. The book begins by explaining the features of the electric drive system and trends of development in related technologies, as well as the basic structure and operation principles of the electric machine. It also addresses steady state characteristics and control of the machines and the transformation of physical variables of AC machines using reference frame theory in order to provide a proper foundation for the material. The heart of the book reviews several control algorithms of electric machines and power converters, explaining active damping and how to regulate current, speed, and position in a feedback manner. Seung-Ki Sul introduces tricks to enhance the control performance of the electric machines, and the algorithm to detect the phase angle of an AC source and to control DC link voltages of power converters. Topics also covered are: Vector control Control algorithms for position/speed sensorless drive of AC machines Methods for identifying the parameters of electric machines and power converters The matrix algebra to model a three-phase AC machine in d-q-n axes Every chapter features exercise problems drawn from actual industry experience. The book also includes more than 300 figures and offers access to an FTP site, which provides MATLAB programs for selected problems. The book's practicality and realworld relatability make it an invaluable resource for professionals and engineers involved in the research and development of electric machine drive business, industrial drive designers, and senior undergraduate and graduate students. To obtain instructor materials please send an email to email@example.com To visit this book's FTP site to download MATLAB codes, please click on this link: ftp://ftp.wiley.com/public/sci_tech_med/electric_machine/ MATLAB codes are also downloadable from Wiley Booksupport Site at http://booksupport.wiley.com
Model 6035 Quantity 1 Color Black + silver Material Plastic + copper Features Current: 10A; Voltage: AC 250V Application DIY project Packing List 1 x Switch
Input and output voltage can be alternately displayed; Boot status can be freely defined; With a key switch function easy to control output; High-power MOS tube reverse polarity protection circuit to improve efficiency and reliability; Digital display color is red size is 0.98 inches; Instructions and precautions: IN +: Input cathode; IN-: Input negative; OUT +: Positive output; OUT-: Output negative; ON/0FF: Output control keys; S1: Mode Select key / memory key; Work Mode Description: Input voltage mode: the default boot mode input voltage display ** .* LED indicator lights output closed. Output voltage mode: Press S1 once switched to the output voltage mode the display “** . * ”LED light is off turn off the display if the output 0FF; Alternating mode: S1 is pressed again Input / output voltage alternating turns 3S display data (press again to return to Input voltage display mode); Memory Mode: Press S1 button above 2S automatic memory module current work status as the default power-on state; When digital appears [ 0 ] represents the default boot display input voltage When digital appears [ 1 ] represents the default boot display the output voltage; When digital appears [ 2 ] represents the default boot input / output voltage alternating; Common voltage data test: ( closed digital test ); Boost efficiency buck efficiency; 5.0V turn 12V/1A efficiency of 86.3%; 5V turn 3.3V/3A efficiency of 74.2% ; 7.4V turn 12V/1A efficiency of 88.7%; 12V turn 5V/3A efficiency of 83.8%; 12V switch 18V/1A efficiency 88.3%; 24V switch 12V/2A efficiency of 86.4%; 18V switch 24V/1A efficiency 87.3%; 24V switch 18V/2A efficiency of 87.6% ; Efficiency buck-boost mode; 12V switch 12V/3A efficiency 87.4%; 5V turn 5V/2A efficiency of 81.4% .
This power saver box is with compact size and LED display, easy to operate, can efficiently save electric power resources up to 35%. Perfect for household and office use. Features Prevent unstable voltage, stabilizer voltage, prolong the lifespan of appliance. Stabilize electric current, reduce the power loss, improve the service power of appliance. Saving up to max load 50KW. Minimize the current wave form distortion. With LED display, showing the working status. Easy to use, maintenance free. Suitable for air conditioner, washing machine, freezer, TV, computer and etc. Specifications Panel Designed Plastic Controller Yes Phase 1Phase Fuse 1pc for each phase Voltage 90V-265V/50Hz&60Hz Working Temperature -40° to +70° IP Level IP43 Amp Saving Rate 10% to 25% Net Weight 0.6kg-1kg Size 140mm x 82mm x 38mm Package Contents 1 x Power Saver