Three-Phase Induction Motor Stator Current Optimization
... All these factors must be considered at loads which are less than nominal loads, due to their influence on the whole performance of an induction motor. In other words, these parameters have to be optimized simultaneity by reducing the unnecessary excess currents at light loads, which is normally dis ...
... All these factors must be considered at loads which are less than nominal loads, due to their influence on the whole performance of an induction motor. In other words, these parameters have to be optimized simultaneity by reducing the unnecessary excess currents at light loads, which is normally dis ...
Experiment 4 - Portal UniMAP
... connected in series with the electromagnet winding can be used to vary the field current. Figure 4.1 illustrates how the speed versus armature voltage of a separatelyexcited dc motor is affected when the field current is decreased below its nominal value. Constant K1 becomes greater. This means that ...
... connected in series with the electromagnet winding can be used to vary the field current. Figure 4.1 illustrates how the speed versus armature voltage of a separatelyexcited dc motor is affected when the field current is decreased below its nominal value. Constant K1 becomes greater. This means that ...
8245 - SK Engineering Academy
... 14. What are Interpoles and state their use. Interpoles small poles fixed to the yoke and spaced in between the main poles. Interpoles are used to neutralize the cross magnetizing effect of armature reaction. 15. How can the voltage in a D.C. generator be increased? The voltage in a D.C generator ca ...
... 14. What are Interpoles and state their use. Interpoles small poles fixed to the yoke and spaced in between the main poles. Interpoles are used to neutralize the cross magnetizing effect of armature reaction. 15. How can the voltage in a D.C. generator be increased? The voltage in a D.C generator ca ...
loudspeaker impedance with sia smaartlive
... resistance allows you to optimize the signal-to-noise ratio of the measurement while best taking advantage of the dynamic range and resolution of the system. Conversely, the calibration resistor should be of high precision and on the same order of magnitude as the unknown load impedance for maximum ...
... resistance allows you to optimize the signal-to-noise ratio of the measurement while best taking advantage of the dynamic range and resolution of the system. Conversely, the calibration resistor should be of high precision and on the same order of magnitude as the unknown load impedance for maximum ...
Resettable Fuses – PTCs
... actually interrupt the current flow (see LEAKAGE CURRENT above). The typical short circuit rating of a board-mounted PTC is 40A; for battery strap PTCs, this value can reach 100A. Fuses do in fact interrupt the current flow in response to the overload and the range of interrupting ratings vary from ...
... actually interrupt the current flow (see LEAKAGE CURRENT above). The typical short circuit rating of a board-mounted PTC is 40A; for battery strap PTCs, this value can reach 100A. Fuses do in fact interrupt the current flow in response to the overload and the range of interrupting ratings vary from ...
MAX1570 White LED Current Regulator with 1x/1.5x High-Efficiency Charge Pump General Description
... The MAX1570 operates with 1MHz fixed-frequency switching, allowing for tiny external components. The regulation scheme is optimized to ensure low EMI and low input ripple. An external resistor sets the full-scale LED current, while two digital inputs control on/off and select between three levels of ...
... The MAX1570 operates with 1MHz fixed-frequency switching, allowing for tiny external components. The regulation scheme is optimized to ensure low EMI and low input ripple. An external resistor sets the full-scale LED current, while two digital inputs control on/off and select between three levels of ...
Lesson 1 - Introduction
... Introduction (I). • Power MOSFETs are excellent power devices to be used in power converters up to a few kWs. • They have good switching characteristics because they are unipolar devices. • This means that the current is due to majority carriers exclusively and that it does not pass through any PN ...
... Introduction (I). • Power MOSFETs are excellent power devices to be used in power converters up to a few kWs. • They have good switching characteristics because they are unipolar devices. • This means that the current is due to majority carriers exclusively and that it does not pass through any PN ...
BD3508MUV
... The shutdown (TSD) circuit automatically switches output OFF when the chip temperature gets too high, thus serving to protect the IC against “thermal runaway” and heat damage. Because the TSD circuit is provided to shut down the IC in the presence of extreme heat, in order to avoid potential problem ...
... The shutdown (TSD) circuit automatically switches output OFF when the chip temperature gets too high, thus serving to protect the IC against “thermal runaway” and heat damage. Because the TSD circuit is provided to shut down the IC in the presence of extreme heat, in order to avoid potential problem ...
chapter2_circuit_breakers_jan_2014
... This heat increases the energy of electrons in the contact areas and the ionized particles tries to maintain the current when contacts are separated.This flow of charged particles form one contact to other is called an arc . The medium surrounding the arc also contains ions . Due to this charged par ...
... This heat increases the energy of electrons in the contact areas and the ionized particles tries to maintain the current when contacts are separated.This flow of charged particles form one contact to other is called an arc . The medium surrounding the arc also contains ions . Due to this charged par ...
TPS70702 数据资料 dataSheet 下载
... regulators are sensed at the VSENSE1 and VSENSE2 pins, respectively. The input signal at the SEQ pin controls the power-up sequence of the two regulators. When the device is enabled and the SEQ terminal is pulled high or left open, VOUT2 turns on first and VOUT1 remains off until VOUT2 reaches appro ...
... regulators are sensed at the VSENSE1 and VSENSE2 pins, respectively. The input signal at the SEQ pin controls the power-up sequence of the two regulators. When the device is enabled and the SEQ terminal is pulled high or left open, VOUT2 turns on first and VOUT1 remains off until VOUT2 reaches appro ...
INSTALLATION & OPERATING MANUAL SCIMITAR SERIES 1RU RACK-MOUNT INVERTERS WWW.UNIPOWERCO.COM
... 2.3.15 Please confirm that the AC input breaker is set to the OFF position before connecting/disconnecting the AC power. Do not touch the AC INPUT terminals other than with properly insulated tools so as to avoid electric shock. Ensure that the protective cover has been correctly fitted after inst ...
... 2.3.15 Please confirm that the AC input breaker is set to the OFF position before connecting/disconnecting the AC power. Do not touch the AC INPUT terminals other than with properly insulated tools so as to avoid electric shock. Ensure that the protective cover has been correctly fitted after inst ...
Feeder Fitting Ground A string of outdoor lights that is
... Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch -circuit overcurrent device. Festoon Lighting. A string of outdoor lights that is suspended between two points. The general requirements for fest ...
... Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch -circuit overcurrent device. Festoon Lighting. A string of outdoor lights that is suspended between two points. The general requirements for fest ...
MAX1858A/MAX1875A/MAX1876A Dual 180° Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR General Description
... Feedback Input for Regulator 1 (REG1). Connect FB1 to a resistive divider between REG1’s output and GND to adjust the output voltage between 1V and 18V. To set the output voltage below 1V, connect FB1 to a resistive voltage-divider from REF and REG1’s output. See the Setting the Output Voltage secti ...
... Feedback Input for Regulator 1 (REG1). Connect FB1 to a resistive divider between REG1’s output and GND to adjust the output voltage between 1V and 18V. To set the output voltage below 1V, connect FB1 to a resistive voltage-divider from REF and REG1’s output. See the Setting the Output Voltage secti ...
applications of integrated circuit
... than 0.33 and less than 3.0 for all normal conditions. (If either of these ratios is not met with an unmodified sensor, a series resistor or a shunt resistor must be added to avoid undesired activation of the circuit.) The protective feature may be applied to other systems when operation of the circ ...
... than 0.33 and less than 3.0 for all normal conditions. (If either of these ratios is not met with an unmodified sensor, a series resistor or a shunt resistor must be added to avoid undesired activation of the circuit.) The protective feature may be applied to other systems when operation of the circ ...
capacitor voltage transformer
... capacitor voltage transformer shall be submitted to the Chief Engineer, Engineering, for approval. i) Verification of terminal markings and polarity as per clause 15 of IEC:186 as amended up to date. ii) Power frequency test on the primary winding as per clause 16 of IEC:186 as amended up to date. i ...
... capacitor voltage transformer shall be submitted to the Chief Engineer, Engineering, for approval. i) Verification of terminal markings and polarity as per clause 15 of IEC:186 as amended up to date. ii) Power frequency test on the primary winding as per clause 16 of IEC:186 as amended up to date. i ...
Chapter 8: Sensors & Tranducers
... to be used as a reference point is such that R1 = R2 (shaft is at midstroke). At the start of the test, potentiometer R3 R4 is adjusted so that the bridge is balanced (VE =0V). Assuming that the object being monitored will move a maximum distance of 0.5 in. toward A What will be the new value of VE ...
... to be used as a reference point is such that R1 = R2 (shaft is at midstroke). At the start of the test, potentiometer R3 R4 is adjusted so that the bridge is balanced (VE =0V). Assuming that the object being monitored will move a maximum distance of 0.5 in. toward A What will be the new value of VE ...
BQ24400 数据资料 dataSheet 下载
... The bq24400 uses a peak-voltage detection (PVD) scheme to terminate fast charge for NiCd and NiMH batteries. The bq24400 continuously monitors the voltage on the BAT pin, representing the battery voltage, to ensure that it never exceeds VMCV (maximum cell voltage). In addition, it also samples, at a ...
... The bq24400 uses a peak-voltage detection (PVD) scheme to terminate fast charge for NiCd and NiMH batteries. The bq24400 continuously monitors the voltage on the BAT pin, representing the battery voltage, to ensure that it never exceeds VMCV (maximum cell voltage). In addition, it also samples, at a ...
Parallel Circuits
... a voltage source, as shown in Fig. 5–1. In this figure, R1 and R2 are in parallel with each other and a 1.5-V battery. In Fig. 5–1b, the points A, B, C, and E are equivalent to a direct connection at the positive terminal of the battery because the connecting wires have practically no resistance. Si ...
... a voltage source, as shown in Fig. 5–1. In this figure, R1 and R2 are in parallel with each other and a 1.5-V battery. In Fig. 5–1b, the points A, B, C, and E are equivalent to a direct connection at the positive terminal of the battery because the connecting wires have practically no resistance. Si ...