How to select a VFD
... the inverter section. IGBTs can turn on and off at a much higher frequency, up to 20 kHz. The higher carrier frequencies associated with IGBTs offer some key advantages over older SCR and BJT inverters, but also have a severe trade-off to be discussed later. IGBTs typically are not used in VFD rect ...
... the inverter section. IGBTs can turn on and off at a much higher frequency, up to 20 kHz. The higher carrier frequencies associated with IGBTs offer some key advantages over older SCR and BJT inverters, but also have a severe trade-off to be discussed later. IGBTs typically are not used in VFD rect ...
PDF
... my project depends on two detection points in the OHT and one detection point in the sump. The water level must be controlled at these points. To facilitate this, we use sensors. In our case, these sensors are non corrosive metallic contacts with space between them present at each detection point. ...
... my project depends on two detection points in the OHT and one detection point in the sump. The water level must be controlled at these points. To facilitate this, we use sensors. In our case, these sensors are non corrosive metallic contacts with space between them present at each detection point. ...
Protection of the People and Equipments in the Electric
... To protect an electrical installation, we have to detect defects (overload, short-circuit, over voltage, decreases tension) [5, 8]. -Overload:this defect from an office that call too much power to the power line. This results in a current draw as the facility sees its temperature increase beyond its ...
... To protect an electrical installation, we have to detect defects (overload, short-circuit, over voltage, decreases tension) [5, 8]. -Overload:this defect from an office that call too much power to the power line. This results in a current draw as the facility sees its temperature increase beyond its ...
Guide to 600V Generator Set Applications in North America
... transmission voltages result in a lower current and reduced losses over long distances. Canadian utility companies chose 600 V as a common feed into commercial buildings and stepped down to the lower voltage through transformers. Standby Generator Set - In Canada the principal generator 600V applica ...
... transmission voltages result in a lower current and reduced losses over long distances. Canadian utility companies chose 600 V as a common feed into commercial buildings and stepped down to the lower voltage through transformers. Standby Generator Set - In Canada the principal generator 600V applica ...
QS5U21
... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
AN2504
... Note that voltage detector output state simply indicates if the supply voltage is above or below a specific threshold, which can be used for early power fail warning. However microprocessors' inputs require some minimum input pulse width to register the change of signal on the logical input. In this ...
... Note that voltage detector output state simply indicates if the supply voltage is above or below a specific threshold, which can be used for early power fail warning. However microprocessors' inputs require some minimum input pulse width to register the change of signal on the logical input. In this ...
Lab 4 Non-ideal meters and some review
... Part 5. A non-ideal voltmeter. Recall that to measure the voltage drop across a given resistor, you place a voltmeter in parallel with it. The resistance of the voltmeter should be large so that it does not change significantly the current through the resistor (and in turn the voltage drop across th ...
... Part 5. A non-ideal voltmeter. Recall that to measure the voltage drop across a given resistor, you place a voltmeter in parallel with it. The resistance of the voltmeter should be large so that it does not change significantly the current through the resistor (and in turn the voltage drop across th ...
j500 j501 j502 j503 j504 j505 j506 j507 j508 j509 j510 j511 current
... Information furnished by Linear Integrated Systems is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under a ...
... Information furnished by Linear Integrated Systems is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under a ...
TL082 Wide Bandwidth Dual JFET Input Operational Amplifier
... input op amps they do not require special handling. As with most amplifiers, care should be taken with lead dress, component placement and supply decoupling in order to ensure stability. For example, resistors from the output to an input should be placed with the body close to the input to minimize ...
... input op amps they do not require special handling. As with most amplifiers, care should be taken with lead dress, component placement and supply decoupling in order to ensure stability. For example, resistors from the output to an input should be placed with the body close to the input to minimize ...
2x4 wire resistance simplifies precision measurements
... measures the resulting voltage to check a small solder joint, flex drop. If there are only two leads, connector or chip resistor with as shown in Figure 1, the source four leads can be a real trial. current travels on the same path Switching lead configurations can used to measure the voltage drop. le ...
... measures the resulting voltage to check a small solder joint, flex drop. If there are only two leads, connector or chip resistor with as shown in Figure 1, the source four leads can be a real trial. current travels on the same path Switching lead configurations can used to measure the voltage drop. le ...
Photoflash Capacitor Charger with Programmable Current Limit and
... Ideally, the charging time is not affected by transformer primary inductance. In practice, however, it is recommended that a ...
... Ideally, the charging time is not affected by transformer primary inductance. In practice, however, it is recommended that a ...
7154 VFD - Cincinnati State
... is reduced. These watts are expended as heat instead of as mechanical power. When a harmonic compensated reactor is added to the VFD output, harmonics are reduced, causing motor watts loss to be reduced. The motor is able to deliver more power to the load at greater efficiency. Utility tests conduct ...
... is reduced. These watts are expended as heat instead of as mechanical power. When a harmonic compensated reactor is added to the VFD output, harmonics are reduced, causing motor watts loss to be reduced. The motor is able to deliver more power to the load at greater efficiency. Utility tests conduct ...
TPS5450 数据资料 dataSheet 下载
... The ENA pin has an internal pullup current source, allowing the user to float the ENA pin. If an application requires controlling the ENA pin, use open drain or open collector output logic to interface with the pin. To limit the start-up inrush current, an internal slow-start circuit is used to ramp ...
... The ENA pin has an internal pullup current source, allowing the user to float the ENA pin. If an application requires controlling the ENA pin, use open drain or open collector output logic to interface with the pin. To limit the start-up inrush current, an internal slow-start circuit is used to ramp ...
Power Electronics
... CEC efficiency (weighted across power and voltage) of nearly 96%, with promise to achieve still higher efficiency. To date, the technology under development has resulted in two papers, which will be presented at the 2010 Energy Conversion Congress and Exposition. We have also submitted a provisional ...
... CEC efficiency (weighted across power and voltage) of nearly 96%, with promise to achieve still higher efficiency. To date, the technology under development has resulted in two papers, which will be presented at the 2010 Energy Conversion Congress and Exposition. We have also submitted a provisional ...
Monitoring technique
... X1-L1 Automatic restart (Alarm auto reset) Manual restart (Latched Alarm), reset with built in push button, external push button on X1-L1 or by disconnecting the supply ...
... X1-L1 Automatic restart (Alarm auto reset) Manual restart (Latched Alarm), reset with built in push button, external push button on X1-L1 or by disconnecting the supply ...
COMBOLIGHT New Construction Recessed Trimless - 12V AR70 - 1 Light
... assembly are all steel construction. Perforated meshplate allows for trimless installation in drywall/plaster ceilings by allowing the ceiling’s mudding compound to be applied right up to the edge of the fixture opening. Includes a beveled “knife-edge” lips to ensure a clean edge. Can accommodate 0. ...
... assembly are all steel construction. Perforated meshplate allows for trimless installation in drywall/plaster ceilings by allowing the ceiling’s mudding compound to be applied right up to the edge of the fixture opening. Includes a beveled “knife-edge” lips to ensure a clean edge. Can accommodate 0. ...
SSPA 0.5-2.5-30 DS_SSPA 0.5-2.5-30 DS.qxd
... typical employing a +24Vdc supply. This PA operates from 18Vdc to 36Vdc input voltage. Worst case harmonic values are -15 dBc in band at P1dB. ...
... typical employing a +24Vdc supply. This PA operates from 18Vdc to 36Vdc input voltage. Worst case harmonic values are -15 dBc in band at P1dB. ...
Superheterodyne Receiver
... transformer is phase shifted by 90 degrees. In other words, if the voltage at one end of the transformer is raised, then the voltage at the other end decreases since there is only a certain voltage induced in the transformer. Therefore, since the RF signal is phase shifted by 90 degrees, when it com ...
... transformer is phase shifted by 90 degrees. In other words, if the voltage at one end of the transformer is raised, then the voltage at the other end decreases since there is only a certain voltage induced in the transformer. Therefore, since the RF signal is phase shifted by 90 degrees, when it com ...
Buck converter
A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.