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Half stepping techniques
Half stepping techniques

... However a disadvantage with half-step drive is a significant torque variation. The reason is the torque in onephase-on positions is about 70% of the two-phase-on positions’ torque. This variation can cause vibrations and/or mechanical noise, though less than in full-step drive mode. Modified half st ...
1.3.7 Measuring power factor
1.3.7 Measuring power factor

BD9C301FJ
BD9C301FJ

... load. Selecting an inductor with a large inductance causes the ripple current ∆IL that flows into the inductor to be small. However, decreasing the ripple voltage generated in the output is not advantageous in terms of the load transient response characteristic. An inductor with a small inductance i ...
University of Michigan Hospitals and Health Centers Facilities Planning and Development
University of Michigan Hospitals and Health Centers Facilities Planning and Development

461 grade a - Powerstar Inc
461 grade a - Powerstar Inc

WT500 Power Analyzer
WT500 Power Analyzer

... In addition to numerical data, the WT500 can display input signal waveforms and trends (time variation of numerical data). Also bar graph display and vector display are available with the harmonic measurement (/G5) option. ...
Cascadable Three-Input Single-Output Current-Mode Universal Filter Using CDBAs
Cascadable Three-Input Single-Output Current-Mode Universal Filter Using CDBAs

... employs only three CDBAs, two virtually grounded resistors and two grounded capacitors, which provides the advantage of an integrated circuit (IC) implementation [10]-[11]. The filter can realize five standard biquadratic filtering functions, i.e., lowpass (LP), bandpass (BP), highpass (HP), bandsto ...
Guitar Player Nov. 1991
Guitar Player Nov. 1991

technically speaking
technically speaking

... commercial gas fired HVAC equipment. The job of the flame sensing rod is to tell the controller that the main gas burners have ignited. If no flame is present after a certain amount of time, the controller will shut off the gas to the burners. Here’s how it works: The controller applies an AC voltag ...
PAM2842 Description Pin Assignments
PAM2842 Description Pin Assignments

... In boost and sepic circuit, when LED open or no load, the circuit will have no feedback, if no other measure be taken the switch voltage will be very high and damage the switch, so this OV pin must be set carefully. In buck circuit, the switch voltage is always small than input voltage, so the OV pi ...
PDF
PDF

... of the capacitor can be seen from the waveform, and the av- erage voltage of is 204 V. Waveform “5” shows the voltage between the drain and the source of the MOSFET. Fig. 10 shows the experimental results of the converter working in the charging mode when the average bus current is 8.2 A. With the p ...
Physics 15b Lab 2: Current, Ohm`s Law
Physics 15b Lab 2: Current, Ohm`s Law

... hysteretic. Memories require hysteresis, and ferromagnetic systems are used in magnetic memories precisely because of their strong hysteretic properties. Thermostatic temperature control systems and battery rechargers are hysteretic, and their energy efficiency depends on how hysteretic they are. Th ...
Synchronous Triggering of Multiple Spark Gap Switches
Synchronous Triggering of Multiple Spark Gap Switches

... 10 ns was observed which is well within the synchronous timing requirement of 50ns. This was tolerablee for simultaneous discharge of two current waveforms. The slight mismatch of triggering does not affect much the total added up current for the case when peak current requirements through a single ...
Owner`s Manual
Owner`s Manual

... cables and connectors from the battery to the inverter should be properly sized to ensure minimum voltage drop, minimum heating and minimum power loss between the battery and the inverter. Thinner cables and loose connections will result in larger voltage drop, increased loss of power and consequent ...
Aalborg Universitet Kocewiak, Lukasz; Hjerrild, Jesper ; Bak, Claus Leth
Aalborg Universitet Kocewiak, Lukasz; Hjerrild, Jesper ; Bak, Claus Leth

... Horns Rev 2 have been obtained in the same way. WTs used in both WFs are identical, the same power converters and WT transformers. This creates an ideal opportunity to compare both WFs. The external networks are different, as previously described, but they can be threatened as representative network ...
dc voltage measurements
dc voltage measurements

Ideal Transformer.
Ideal Transformer.

...  The core form construction consists of a simple rectangular laminated piece of steel with the transform winding wrapped around the two sides of the ...
Low Power Designs with CoolRunner-II CPLDs
Low Power Designs with CoolRunner-II CPLDs

... on the bus is not useful to the CPLD, but the data lines continue to toggle, which subsequently toggles the internal logic of the CPLD. Any logic that changes state within the CPLD will consume power. Therefore, it follows that disconnecting the CPLD from the data bus when the device is not addresse ...
LAPORAN PROJEK SARJANA MUDA
LAPORAN PROJEK SARJANA MUDA

FEATURES DESCRIPTION D
FEATURES DESCRIPTION D

... complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ...
High Speed, Triple Differential Receiver with Comparators AD8145
High Speed, Triple Differential Receiver with Comparators AD8145

... The maximum safe power dissipation in the AD8145 package is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit can change the ...
SLIM_5125_User_Handbook_G14217_1.0
SLIM_5125_User_Handbook_G14217_1.0

AN9800: Total Power Conversion Solutions for Computer
AN9800: Total Power Conversion Solutions for Computer

... upper MOSFET’s rDS(ON). During the ON-time of the upper MOSFET, its drain-to-source voltage is compared with a user-adjustable voltage created by an internal current source across ROCSET (i.e., R1, R2 in the schematic). When the MOSFET’s drain-to-source voltage exceeds the preset threshold, the regu ...
Cascadable Amplifier 10 kHz to 2500 MHz
Cascadable Amplifier 10 kHz to 2500 MHz

... Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM") products. These materials are provided by MACOM as a service to its customers and may be used for informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such pr ...
CMS2005 - Sensitec GmbH
CMS2005 - Sensitec GmbH

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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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