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ChRoMicro - Cheap Robotic Microhelicopter HOWTO (EN)
ChRoMicro - Cheap Robotic Microhelicopter HOWTO (EN)

... are essentially scaled-down versions of regular model helicopters, made possible by advances in battery technology. Some models have a rotor head with fixed collective pitch (FP), while others have both cyclic and collective variable pitch (CP). Most have a dedicated tail motor rather than a variabl ...
Discrete IGBTs - TOSHIBA Semiconductor
Discrete IGBTs - TOSHIBA Semiconductor

... The Toshiba discrete IGBTs are available in high-voltage and high-current ratings. They are used in inverter and power conversion circuits for such diverse applications as motor drivers, uninterruptible power supply (UPS) systems, IH cookers, plasma display panels (PDPs), strobe flashes and so on. ...
Biomechanics of Lifting
Biomechanics of Lifting

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Transistors - SFA Physics and Astronomy

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MAX1552 Complete Power IC for Low-Cost PDAs General Description

... The MAX1552 monitors the battery voltage at IN. When VIN falls below 3.6V, LBO goes low, typically putting the system (µP) into a sleep state. The MAX1552 remains fully functional in this state and all outputs maintain normal operation. However, when in sleep mode, the system (µP) typically drives E ...
EE2251-Electrical Machines I
EE2251-Electrical Machines I

... 4. Give example for single and multiple excited systems? Single excited system-reluctance motor, single phase transformer, relay coil Multiply excited system-alternator, electro mechanical transducer 5. Why do all practical energy conversion devices make use of the magnetic field as a coupling mediu ...
7872A - Data Device Corporation
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... hold amplifier, successive-approximation ADC, 3V buried Zener reference and versatile interface logic. It features a selfcontained, laser- trimmed internal clock, so no external clock timing components are required. To achieve the minimum noise possible, the on-chip clock may be overridden to synchr ...
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7872 Data Sheet 04.14.15 Rev 6.fm

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DN240 - ADSL Modems That Use the LT1886 As a Line Driver Yield Long Reach and Fast Data Rates

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AN-32 FET Circuit Applications

... Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable f ...
Slide 1 - WSU EECS
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... Structure and Operation of MOS Transistor • The two p+ regions will be current-conducting terminals of this device. • A conducting channel is eventually formed through applied gate voltage in the section between the drain and the source diffusion regions. • The channel Length and Width are very impo ...
Improved Phase Shedding Techniques in Interleaved Converters
Improved Phase Shedding Techniques in Interleaved Converters

... Implementing this control for the converter is very complicated. Definite controls for detecting the point where current crosses 0 and the point where current reaches the average value need to be defined. Doing so may prove to be cumbersome in analog domain or rather the simulink domain. Hence state ...
MAX1698/MAX1698A High-Efficiency Step-Up Current Regulator for LEDs General Description
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... Typical values for the output capacitor are 0.1µF to 10µF. Larger values help reduce output ripple at the expense of size and higher cost. The requirements of the input capacitor depend on the type of the input voltage source. However, in many applications, the same capacitor type and value are used ...
Ami Pro - EUMC-DEF.SAM
Ami Pro - EUMC-DEF.SAM

... to change both drain and gate bias voltages individually. Of those, we have selected the first possibility. The oscillator built is depicted at Fig. 3. Drain voltage, common to all transistors, has been supplied through the drain artificial line via the oscillator output. We have used a standard com ...
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MAX8614A/MAX8614B Dual-Output (+ and -) DC-DC Converters for CCD General Description

... positive output delivers up to 50mA while the inverter supplies up to 100mA with input voltages between 2.7V and 5.5V. The MAX8614A/MAX8614B are ideal for powering CCD imaging devices and displays in digital cameras and other portable equipment. The MAX8614A/MAX8614B generate an adjustable positive ...
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TSP-WG6-20MA-15V-04 - Axiomatic Technologies Corporation

PDF - The American RV Magazine On-Line
PDF - The American RV Magazine On-Line

... output until the unit returns to normal operating temperature. Full output capacity will return as the unit cools down. IGNITION PROTECTION – All INTELIPOWER 9100 series converters are ignition protected. INTERNALCOMPONENT COOLING – The system is so efficient that if demand is less than 20% of the r ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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