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Lawn-O-Matic - Engineering | UMass
Lawn-O-Matic - Engineering | UMass

... The ESCs operate as an ON/OFF switch for the motors, powered by the 11.1V battery. As an example, to rotate the motors at roughly half of their rated rotational speed, the ESCs will switch the power to the motors ON and OFF at a frequency large enough to provide an uninterrupted flow of current into ...
Datasheet - Microchip
Datasheet - Microchip

Fast Bus Transfer Systems – A System Solution - ee.iitb
Fast Bus Transfer Systems – A System Solution - ee.iitb

Schottky diode IV Characteristics
Schottky diode IV Characteristics

... switches from conducting to non-conducting state. Where in a p-n diode the reverse recovery time can be in the order of hundreds of nanoseconds and less than 100 ns for fast diodes, Schottky diodes do not have a recovery time, as there is nothing to recover from (i.e. no charge carrier depletion reg ...
74AHC1GU04  UNBUFFERED SINGLE INVERTER GATE Description
74AHC1GU04 UNBUFFERED SINGLE INVERTER GATE Description

... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
BDTIC www.BDTIC.com/infineon  E l e c t r i c  ...
BDTIC www.BDTIC.com/infineon E l e c t r i c ...

... power module. The chip can be driven within its specified blocking voltage up to twice its nominal current rating, since the maximal junction temperature defined for switching operation is not exceeded. The safe operating area of the power module is limited due to stray inductances. With increasing ...
SP3227E 数据资料DataSheet下载
SP3227E 数据资料DataSheet下载

... The SP3224E/3225E are 2-driver/2-receiver devices and the SP3226E/SP3227E are 1driver/1-receiver devices. All are ideal for computer peripherals, point-of-sale equipment, consumer and embedded applications. These devices use an internal high-efficiency, charge-pump power supply that requires only 0.1 ...
TRANSFORMER
TRANSFORMER

60708-124 LARGE PTO -WInpower
60708-124 LARGE PTO -WInpower

... The WINPOWER PTO drive generator will provide, depending on the unit purchased, 120/240V single phase, 120/240V three phase, 120/208 three phase or 277/480 three phase 60Hz electrical service when direct-driven. Tractor or vehicle power take-off shafts, can be used for driving these generators. NOTE ...
applications information for using a "pic" microcontroller in
applications information for using a "pic" microcontroller in

LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic
LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic

... to 6 GHz. It provides an accurate, temperature and supply insensitive, output voltage that relates linearly to the RF input power in volt. The LMH2120's excellent conformance to a linear response enables an easy integration by using slope and intercept only, reducing calibration effort significantly ...
SP3232EU 数据资料DataSheet下载
SP3232EU 数据资料DataSheet下载

... Since both V+ and V– are separately generated from VCC; in a no–load condition V+ and V– will be symmetrical. Older charge pump approaches that generate V– from V+ will show a decrease in the magnitude of V– compared to V+ due to the inherent inefficiencies in the design. The clock rate for the char ...
Application Note: 1 LED Power Supplies Common LED Configurations
Application Note: 1 LED Power Supplies Common LED Configurations

Evaluates: MAX5906–MAX5909 MAX5908 Evaluation Kit General Description Features
Evaluates: MAX5906–MAX5909 MAX5908 Evaluation Kit General Description Features

NCP1351ADAPGEVB NCP1351 57 W Adapter Evaluation Board User's Manual
NCP1351ADAPGEVB NCP1351 57 W Adapter Evaluation Board User's Manual

... Low Standby−power: the frequency reduction technique offers an excellent solution for designers looking for low standby power converters. Also, compared to the skip−cycle method, the smooth off time expansion does not bring additional ripple in no−load conditions: the output voltage remains quiet. N ...
Auto transformer
Auto transformer

... Auto transformer employs only single winding per phase as against two distinctly separate windings in a conventional transformer. Advantages of using auto transformer. For transformation ratio = 2, the size of the auto transformer would be approximately 50% of the corresponding size of two winding ...
Alpha Series Amplifier (Servo Amplifier Unit) Maintenance Manual
Alpha Series Amplifier (Servo Amplifier Unit) Maintenance Manual

... 1 This circuit breaker is intended to protect the power cord and related equipment. A circuit breaker to protect a servo amplifier unit is provided within the servo amplifier unit. 2 This AC line filter should always be used,so influence by harmonic noise to the power supply can be reduced. When the ...
MX7839 Octal, 13-Bit Voltage-Output DAC with Parallel Interface General Description
MX7839 Octal, 13-Bit Voltage-Output DAC with Parallel Interface General Description

... The MX7839 contains eight 13-bit, voltage-output digitalto-analog converters (DACs). On-chip precision output amplifiers provide the voltage outputs. The device operates from ±15V supplies. Its bipolar output voltage swing is ±10V and is achieved with no external components. The MX7839 has three pai ...
Technical Guidelines and Requirements for Parallel
Technical Guidelines and Requirements for Parallel

... The DG Facility must either isolate with the Interconnection Customer’s load and/or be blocked from closing back into the electrical power system until the electrical power system is energized for five minutes from the Company’s normal source. Depending upon the size and type of the DG Facility and ...
INDUSTRIAL AND POWER ELECTRONICS E
INDUSTRIAL AND POWER ELECTRONICS E

... Lander 1993, p. 181). They are most commonly used in three phase applications. In most power systems, the amplitude and the frequency of input voltage to a cycloconverter tend to be fixed values, whereas both the amplitude and the frequency of output voltage of a cycloconverter tend to be variable. ...
MAX187/MAX189 +5V, Low-Power, 12-Bit Serial ADCs General Description Features
MAX187/MAX189 +5V, Low-Power, 12-Bit Serial ADCs General Description Features

... within the voltage range +2.5V to VDD to achieve specified accuracy. The minimum input impedance is 12kI for DC currents. During conversion, the external reference must be able to deliver up to 350FA DC load current and have an output impedance of 10I or less. The recommended minimum value for the b ...
Measurement of Dynamic Electrical and Mechanical Properties of
Measurement of Dynamic Electrical and Mechanical Properties of

... common problem is the power factor on the overall electrical load of the manufacturing plant. Large changes in power serving other equipment can significantly alter the power output of the RSW machine. This can be of particular concern in plants with multiple RSW machines. Fortunately, RSW equipment ...
E1000059-v3 - DCC - LIGO Document Control Center Portal
E1000059-v3 - DCC - LIGO Document Control Center Portal

... For the remainder of the test the OCXO needs to be locked to the timing system. Make sure that the 2-pin LEMO cable is connected and that the push wheel switches show the exact frequency of the installed oscillator. Then, wait for the locking which is indicated by a blinking green light next to the ...
Deney3
Deney3

... A zener diode is a special type of diode where the diode has been optimized for operation in the reverse or avalanche region which is shown in Fig.2. This is completely the opposite of normal diodes or rectifiers where every effort is made to keep the diode from breaking down in the reverse directio ...
SSM2517 数据手册DataSheet 下载
SSM2517 数据手册DataSheet 下载

... three-level modulator design retains the benefits of an all-digital amplifier, yet enables very good PSRR and audio performance. The modulation continues to provide high efficiency even at low output power and has an SNR of 96 dB. Spread-spectrum pulse density modulation is used to provide lower EMI ...
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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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