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Silicon Diffused Power Transistor BU2527AF
Silicon Diffused Power Transistor BU2527AF

3.0 GHz DIVIDE BY 4 PRESCALER UPB1510GV
3.0 GHz DIVIDE BY 4 PRESCALER UPB1510GV

... Power supply pin. This pin must be decoupled with a bypass capacitor (e.g. ...
MAX1856 Wide Input Range, Synchronizable, PWM SLIC Power Supply General Description
MAX1856 Wide Input Range, Synchronizable, PWM SLIC Power Supply General Description

... and a sturdy output capable of handling the ring trip conditions for ring battery. The operating frequency can be set between 100kHz and 500kHz with an external resistor in free-running mode. For noise-sensitive applications, the MAX1856’s operating frequency can be synchronized to an external clock ...
MAX9181 Low-Jitter, Low-Noise LVPECL-to-LVDS Level Translator in an SC70 Package General Description
MAX9181 Low-Jitter, Low-Noise LVPECL-to-LVDS Level Translator in an SC70 Package General Description

... Note 1: All devices are 100% tested at TA = +25°C. Limits over temperature are guaranteed by design and characterization. Note 2: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground except VTH, VTL, VOD, and ∆VOD. Note 3: Guar ...
E70H/E90H
E70H/E90H

... expected operating voltage range of the strobe), then multiply these values by the total number of strobes; be sure to add the currents for any other appliances, including audible signaling appliances, powered by the same source and include any required safety factors. If the peak current exceeds th ...
AD8002
AD8002

... the first order that bandwidth for this amplifier is independent of gain (G). Considering that additional poles contribute excess phase at high frequencies, there is a minimum feedback resistance below which peaking or oscillation may result. This fact is used to determine the optimum feedback resis ...
MAX2601/MAX2602 3.6V, 1W RF Power Transistors for 900MHz Applications General Description
MAX2601/MAX2602 3.6V, 1W RF Power Transistors for 900MHz Applications General Description

... biasing diode that matches the power transistor’s thermal and process characteristics. This diode is used to create a bias network that accurately controls the power transistor’s collector current as the temperature changes (Figure 2). The biasing diode is a scaled version of the power transistor’s ...
Literature review paper on doubly fed induction generator wind
Literature review paper on doubly fed induction generator wind

Fuel Savings Obtained by Replacing Traditional AC
Fuel Savings Obtained by Replacing Traditional AC

Yamaha Power Amplifier White Paper
Yamaha Power Amplifier White Paper

... The power supply voltage is then switched according to the pulse width, creating a high power PWM signal to drive the loudspeaker. The elements used for the switching operation require only a minimum of voltage, allowing vast improvements in efficiency compared to previous amplifier topologies. Clas ...
An Improved VFO Driver Amp for Tube Rigs
An Improved VFO Driver Amp for Tube Rigs

Future Trends in Microelectronics – Impact on Detector Readout
Future Trends in Microelectronics – Impact on Detector Readout

Analysis of Algorithms CS 465/665
Analysis of Algorithms CS 465/665

... – When current is flowing, loops of wire generate a magnetic field, which reacts against the magnetic fields of permanent magnets positioned around the wire loops – These magnetic fields push against one another and the armature turns ...
Discrete Wavelet Transforms for Synchronization of Power
Discrete Wavelet Transforms for Synchronization of Power

... a new switching strategy to be developed in order to reduce the harmonic content of the output voltage in a ac/dc converter maintaining unity power factor. A three-phase induction generator (IG) system for stand-alone power systems is controlled by means of one ac/dc plus one dc/ac converter and app ...
The 10-second start - Earthsafe Systems Inc.
The 10-second start - Earthsafe Systems Inc.

... Provide a source of electrical power of required capacity, reliability, and quality to loads within 10 seconds following loss or failure of the normal power supply. This is the breakdown of NFPA 110 section 4.1 as it applies to life safety loads. This alludes to the distinction of two components in ...
Presentation title
Presentation title

Implementation of Control Center Based Voltage and Var
Implementation of Control Center Based Voltage and Var

AT4033/CL CARDIOID CONDENSER MICROPHONE
AT4033/CL CARDIOID CONDENSER MICROPHONE

BD6232HFP-LB
BD6232HFP-LB

... Stand-by operates independently with the VREF pin voltage. In stand-by mode, all internal circuits are turned off, including the output power transistors. Motor output goes to high impedance. When the system is switched to stand-by mode while the motor is running, the system enters an idling state b ...
MAX9945 38V, Low-Noise, MOS-Input, Low-Power Op Amp General Description
MAX9945 38V, Low-Noise, MOS-Input, Low-Power Op Amp General Description

... Detailed Description The MAX9945 features a combination of low input current and voltage noise, rail-to-rail output voltage swing, wide supply voltage range, and low-power operation. The MOS inputs on the MAX9945 make it ideal for use as transimpedance amplifiers and high-impedance sensor interface ...
Marine Electrical Knowledge
Marine Electrical Knowledge

... An open circuit fault occurs when a phase conductor is completely or even partialy interupted. Causes of open circuit faults are bad connections or a break in the wire. Open circuit faults when intermittent can cause flashes. Open circuit faults when not completely open (bad connection) can cause a ...
Gregg Catalogue Page G092
Gregg Catalogue Page G092

... For XR-Controls, SuitCase 12RC feeder, 20 Series feeders, and 70 Series (S/D/DX model) feeders. For 14-pin remote controls/24 VAC wire feeders. 14-pin plug to a 14-pin socket. (Not for 115-volt XR or 50 Series feeders.) Part No. 242208025, 25 ft. (7.6 m). Part No. 242208050, 50 ft. (15 m). Part No. ...
Power-Synchronization Control of Grid-Connected Voltage
Power-Synchronization Control of Grid-Connected Voltage

... current control loop. By using a with the grid voltage as phase reference, the inner current control loop decouples the current into and components, where outer loops can use the component to control active power or direct voltage, and the component to control reactive power or alternating voltage. ...
Low-power LVDS for digital readout circuits
Low-power LVDS for digital readout circuits

... IEEE 1596.3-1996 standard LVDS driver output signal swing is expected to be centred at 1.25 V and the accepted swing range is from 250 mV to 400 mV. Receiver side has differential load and the source end has a termination resistor to minimize reflection of waveforms especially at higher speeds of da ...
Bipolar Transistors I – Page 1 Bipolar Transistors I
Bipolar Transistors I – Page 1 Bipolar Transistors I

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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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