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AN-7019 Limiting Cross-Conduction Current in Synchronous Buck Converter Designs
AN-7019 Limiting Cross-Conduction Current in Synchronous Buck Converter Designs

... Figure 9 shows the gate-ground voltage in the case of 10nS rise time. When compared to Figure 5 (left) showing the gate-source voltage under identical conditions, it becomes evident that measuring the gate-ground voltage of 2.5 Volt and predicting the existence of shoot through based on the fact tha ...
Series Six PLC Datasheets Manual, GEK-25367E
Series Six PLC Datasheets Manual, GEK-25367E

... or in a model 60 CPU rack. Before installing the module, set the Dual-In-Line-Package (DIP) switches directly behind the card slot on the rack backplane to establish the proper correspondence between the output terminals on this module and a group of eight consecutive output numbers in the program. ...
Advanced Non-Inverting Step up/down Converter with LQR Control
Advanced Non-Inverting Step up/down Converter with LQR Control

AAT4625 数据资料DataSheet下载
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... capacitor can dramatically reduce the load switch input transient response effects seen by the power supply and other circuitry upstream from the AAT4625. The second purpose of the input capacitor is to prevent transient events generated by the load circuit from affecting the operation of the AAT462 ...
Control Algorithms for Voltage Regulated Distribution Transformers
Control Algorithms for Voltage Regulated Distribution Transformers

... which will be presented in the following. Maximum voltages In general, the aim of using VRDT is to mitigate violations of the allowable voltage band of +/-10% according to DIN EN 50160. Therefore, the reduction of maximum voltages using VRDT and the increase of minimum voltages are the main criteria ...
of a Constant Speed Wind Turbine Generator
of a Constant Speed Wind Turbine Generator

Tamura Open Loop Hall Effect Current Sensors
Tamura Open Loop Hall Effect Current Sensors

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... NB: if 4 strings of 9 modules were used this would mean 36 modules and 7380w which will not fit within the power rating of the inverter, even according the earlier calculations such an array may be ok. From the table highest output would be 4 strings of eight modules and output wattage 6560 watts. D ...
New Real time Voltage Stability Indicators Based on Phasor
New Real time Voltage Stability Indicators Based on Phasor

... The performed analyses give evidence of the critical aspects, from the practical point of view, of methodologies based on real-time measurements at a given bus [3-6]. The main critical aspects are:  Computing uncertainty of the equivalent grid parameters depending on the identification method, and ...
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ADP3408 - SP-Elektroniikka

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Low Capacitance ESD Protection for High Speed Video Interface

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Investigation of Solar PV Inverters Current Contributions during
Investigation of Solar PV Inverters Current Contributions during

... a) Applying an arithmetic summation is a generalization approach for the worst case scenario. The accurate calculation by using the phase-angle difference between the two current vectors contributing to the fault at the contact parting time of a circuit breaker requires a complex transient study, bu ...
LM138/LM338 5-Amp Adjustable Regulators
LM138/LM338 5-Amp Adjustable Regulators

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... are delivered through SHV connectors. The HV output RAMP-UP and RAMP-DOWN rates may be selected independently for each channel in the 1÷ 500 V/s range with 1 V/s steps. The module features 1 nA Iset/Imon resolution. A Zoom option is available for Imon, increasing resolution to 100 pA. The modules fi ...
PIC-Gen Frequency Generator - Everyday Practical Electronics
PIC-Gen Frequency Generator - Everyday Practical Electronics

... the bare essentials proved the viability of the idea. The concept was then given full flesh and bones to become the design whose circuit diagram is given in Fig.1. The MAX038 function generator is shown as IC2. It will be seen that half the pins are grounded and from some of their notations it will ...
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To Get a Perfect “A”…

Three-Phase Power Quality Analyzer PowerPad™ Model 3945
Three-Phase Power Quality Analyzer PowerPad™ Model 3945

... look inside your electrical system and see what’s going on? Troubleshooting would be so much easier if you could see the volts, amps and harmonic content in real time and take pictures to document and analyze. Now you can do just that and more with AEMC’s PowerPad. The full color graphical display l ...
VISHAY K3021 datasheet
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... 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. ...
BA15532F
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... (Note 4) Don’t over input current ±10mA. Built-in resistor for protection because of over current with differential input voltage above 0.5. (Note 5) An excessive input current will flow when input voltages (of more than VEE+0.6V or less VCC-0.6V) are applied. The input current can be set to less th ...
Evaluation Board User Guide UG-179
Evaluation Board User Guide UG-179

... circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentati ...
Choosing servomotor brakes
Choosing servomotor brakes

... the load in the absence of power. Typically, the brake is springapplied, power-off type, with a static torque 50% higher than required to hold the load. On occasion, such brakes are used for dynamic braking, either as an assist to the motor, usually taking over just prior to stopping, or in emergenc ...
MAX8620Y µPMIC for Microprocessors or DSPs in Portable Equipment General Description
MAX8620Y µPMIC for Microprocessors or DSPs in Portable Equipment General Description

... circuit (µPMIC) powers low-voltage microprocessors or DSPs in portable devices. The µPMIC includes a highefficiency step-down DC-DC converter, two lowdropout linear regulators (LDOs), a microprocessor reset output, and power-on/off control logic. This device maintains high efficiency at light loads ...
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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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