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Aalborg Universitet Thøgersen, Paul Bach
Aalborg Universitet Thøgersen, Paul Bach

ECE 662 - George Mason University
ECE 662 - George Mason University

Understanding output voltage limitations of DC
Understanding output voltage limitations of DC

... For the ideal buck converter, any output voltage from 0 V to VIN may be obtained. In actual DC/DC converter circuits, there are practical limitations. It has been shown that the output voltage is proportional to the duty cycle and input voltage. Given a particular input voltage, there are limitation ...
1.2mm High Low-Profile Wire Wound Inductor Achieves Highest
1.2mm High Low-Profile Wire Wound Inductor Achieves Highest

... maximum value), a low-profile wire wound inductor just 1.2mm in height with a high current capability of 1A (at the inductance value of 10É H). The new product achieves the highest rated current for its size in the industry. In mobile equipment such as notebook PCs, LCD panels are essential for disp ...
Study of Excitation Control System Responses
Study of Excitation Control System Responses

3.1 Battery charger based on scr
3.1 Battery charger based on scr

... triac T1.Now T1 acts as a closed switch, shorting the circuit. The output voltage drops to zero and fuse gets burned off. Since the switching of triac takes place within few micro seconds there will be no damage to the TTL ICs or any other such voltage sensitive components in the load circuit. 3.2.2 ...
Motor Parameters Application Note
Motor Parameters Application Note

1.2kV Class Super Energy Efficient Harmonic Mitigating Transformer
1.2kV Class Super Energy Efficient Harmonic Mitigating Transformer

... Energy, DOE 10 CFR Part 431; (before DOE referred to as TP1) and/or the CSA C802.2 as referenced in the Canadian Energy Efficiency Regulations SOR/94-651. Total transformer losses are reduced by 30% from these levels at an operating range from 35% to 65% of rated load when measured under a linear lo ...
MODEL : PP 1400 SC
MODEL : PP 1400 SC

... regulation of ± 1 %. (see the note on regulation). The MX321 AVR is 3 phase rms sensed with a voltage regulation of 0.5% rms (see the note on regulation). The UFRO circuit has adjustable slope and dwell for controlled recovery from step loads. An over voltage protection circuit will shutdown the out ...
A 25W OTL Tube Amplifier
A 25W OTL Tube Amplifier

... unless you use an “ideal” solid-state current source in place of R7. Of course, you could achieve excellent noise immunity by using a preamplifier with a balanced output and then applying this to both grids of V1 via C1 and C2. The input stage, which is formed by V1 and its associated components, ac ...
February 24, 2009 CERN J. Matheson, Rutherford Lab D
February 24, 2009 CERN J. Matheson, Rutherford Lab D

hood_ss-amp.pdf
hood_ss-amp.pdf

... output voltage and worsen the smoothing of the power supply, unless this is well designed. Also, because of the increase in current drive with output power, it is possible for a transient overload to drive the output transistors into a condition of thermal runaway, particularly with reactive loads, ...
EUP7965  150mA Low-Noise Low-Dropout Linear Regulator
EUP7965 150mA Low-Noise Low-Dropout Linear Regulator

... temperature. The capacitor type X7R, which operates over a temperature range of -55°C to +125°C, will only vary the capacitance to within ±15%. Most large value ceramic capacitors ( ≈ 2.2µF) are manufactured with Z5U or Y5V temperature characteristics. Their capacitance can drop by more than 50% as ...
XBS013S16R-G - Torex Semiconductor
XBS013S16R-G - Torex Semiconductor

... before use, to confirm that the information in this datasheet is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. Please ensure suitable shipping controls (including ...
1996 ISSCC 8.1 presentation slides for this paper
1996 ISSCC 8.1 presentation slides for this paper

FRENIC-HVAC Combination VFD EngSpec FECA-TE-153
FRENIC-HVAC Combination VFD EngSpec FECA-TE-153

... E. The drive output power section shall change fixed DC voltage to adjustable frequency AC voltage utilizing insulated gate bipolar transistors (IGBT’s) producing a PWM output. Softswitching IGBTs and gate control design shall be utilized to reduce motor terminal dV/dt and allow for motor cable lead ...
MAX8863T/S/R, MAX8864T/S/R Low-Dropout, 120mA Linear Regulators __________________General Description
MAX8863T/S/R, MAX8864T/S/R Low-Dropout, 120mA Linear Regulators __________________General Description

... The MAX8863/MAX8864 feature a 1.1Ω typical p-channel MOSFET pass transistor. This provides several advantages over similar designs using PNP pass transistors, including longer battery life. The p-channel MOSFET requires no base drive current, which reduces quiescent current considerably. PNPbased re ...
Installation, Operation and Maintenance Manual
Installation, Operation and Maintenance Manual

Simulation of a Cascaded Multilevel Inverter Topology with Reduced
Simulation of a Cascaded Multilevel Inverter Topology with Reduced

... switches are depleted in the conduction path, so both the switching as well as conduction losses are reduced, lower input current distortion and electromagnetic interference are also reduced. Therefore it assists for the higher efficiency of the converter. The propound inverter focus extends the out ...
L4-arch0 - VADA
L4-arch0 - VADA

2STL2580
2STL2580

... 2STL2580 High voltage fast switching NPN power transistor Datasheet − production data ...
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 1
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 1

introduction
introduction

... STATCOM (Static Compensator) has a characteristic similar to the synchronous condenser, but as an electronic device, it has no inertia and is superior to the synchronous condenser in several ways - better dynamics, a lower investment cost, and lower operating and maintenance costs. STATCOM is to be ...
Engineering Presentation
Engineering Presentation

...  Unfiltered Inverter Output & Filtered Output  Output Filtering  Eliminates the chop/step on the output waveform from the Inverter Circuit  Ensures the current and voltage waveform stay in-phase for unbalanced loads. ...
TI/National LED Lighting Presentation
TI/National LED Lighting Presentation

... • 6V to 42V (LM3406) • 6V to 75V (LM3406HV) • Hysteretic Operation with Controlled On-Time • Up to 1.5A Constant Current Output ...
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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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