SECTION-4-Chapter_10_Rev1a
... With regard to the IEC time limits, the 10 minute harmonic window can be expected to be on the order of the thermal time constant of typical power factor correction capacitors. Significant overtemperature can be expected for overcurrents lasting 10 minutes, therefore it is appropriate to apply stead ...
... With regard to the IEC time limits, the 10 minute harmonic window can be expected to be on the order of the thermal time constant of typical power factor correction capacitors. Significant overtemperature can be expected for overcurrents lasting 10 minutes, therefore it is appropriate to apply stead ...
Time-Varying and Probabilistic Considerations: Setting Limits
... With regard to the IEC time limits, the 10 minute harmonic window can be expected to be on the order of the thermal time constant of typical power factor correction capacitors. Significant overtemperature can be expected for overcurrents lasting 10 minutes, therefore it is appropriate to apply stead ...
... With regard to the IEC time limits, the 10 minute harmonic window can be expected to be on the order of the thermal time constant of typical power factor correction capacitors. Significant overtemperature can be expected for overcurrents lasting 10 minutes, therefore it is appropriate to apply stead ...
Low Power Design with CoolRunner-II CPLDs Summary
... 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 addressed conserves power. DataGATE solves this issue by disconnecting external signal activity from the ...
... 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 addressed conserves power. DataGATE solves this issue by disconnecting external signal activity from the ...
High Frequency Current Mode Class-D Amplifiers With High Power
... Switch-mode amplifiers are by nature non-linear amplifiers and are not suitable for all applications without additional equipment. Frequency and phase modulated communications systems are well suited to take advantage of switch-mode amplifiers, as the need to maintain an amplitude envelope is not ne ...
... Switch-mode amplifiers are by nature non-linear amplifiers and are not suitable for all applications without additional equipment. Frequency and phase modulated communications systems are well suited to take advantage of switch-mode amplifiers, as the need to maintain an amplitude envelope is not ne ...
UCC28500 数据资料 dataSheet 下载
... SS2: (soft-start for PWM) SS2 is at ground for either enable low or OVP/ENBL below the UVLO2 threshold conditions. When enabled, SS2 charges an external capacitor with a current source. This voltage is used as the voltage error signal during start-up, enabling the PWM duty cycle to increase slowly. ...
... SS2: (soft-start for PWM) SS2 is at ground for either enable low or OVP/ENBL below the UVLO2 threshold conditions. When enabled, SS2 charges an external capacitor with a current source. This voltage is used as the voltage error signal during start-up, enabling the PWM duty cycle to increase slowly. ...
BDTIC
... During typical start-up with connected filaments of the lamp a current source IRES3 (20µA) is active as long as Vcc> 10,5V and VRES< VRESC1 (1,6V). An open Lowside filament is detected, when VRES> VRESC1. Such a condition will prevent the start-up of the IC. In addition the comparator threshold is s ...
... During typical start-up with connected filaments of the lamp a current source IRES3 (20µA) is active as long as Vcc> 10,5V and VRES< VRESC1 (1,6V). An open Lowside filament is detected, when VRES> VRESC1. Such a condition will prevent the start-up of the IC. In addition the comparator threshold is s ...
LM117/LM317A/LM317 3-Terminal Adjustable Regulator General Description
... not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. In general, the best type of capacito ...
... not appreciably improve the ripple rejection at frequencies above 120Hz. If the bypass capacitor is used, it is sometimes necessary to include protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the device. In general, the best type of capacito ...
Diapositive 1
... equivalent to the current Idc The simple average value of a (symmetrical) a.c. is equal to zero © David Hoult 2009 ...
... equivalent to the current Idc The simple average value of a (symmetrical) a.c. is equal to zero © David Hoult 2009 ...
BH6799FVM
... supply lines. An external direction diode can be added. Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor c ...
... supply lines. An external direction diode can be added. Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor c ...
ELECTRONIC BALLAST NIK MUHAMMAD FASHAN BIN HUSAIN
... application is electronic ballast. The electronic ballast is targeting the most of peoples because everyone needs the electrical energy for lighting system whether at home, office, school, mosque, factory and so on. The electronic ballast specially made to replace the conventional choke in fluoresce ...
... application is electronic ballast. The electronic ballast is targeting the most of peoples because everyone needs the electrical energy for lighting system whether at home, office, school, mosque, factory and so on. The electronic ballast specially made to replace the conventional choke in fluoresce ...
Methods of Analysis
... 4. At a particular node of interest (except ground), use Ohm’s law to express the current through any branch connected to that node as the difference between the two node voltages at both end of that branch divided by the branch impedance. The voltage at the node of interest is always considered to ...
... 4. At a particular node of interest (except ground), use Ohm’s law to express the current through any branch connected to that node as the difference between the two node voltages at both end of that branch divided by the branch impedance. The voltage at the node of interest is always considered to ...
Power MOSFET
A power MOSFET is a specific type of metal oxide semiconductor field-effect transistor (MOSFET) designed to handle significant power levels.Compared to the other power semiconductor devices, for example an insulated-gate bipolar transistor (IGBT) or a thyristor, its main advantages are high commutation speed and good efficiency at low voltages. It shares with the IGBT an isolated gate that makes it easy to drive. They can be subject to low gain, sometimes to degree that the gate voltage needs to be higher than the voltage under control.The design of power MOSFETs was made possible by the evolution of CMOS technology, developed for manufacturing integrated circuits in the late 1970s. The power MOSFET shares its operating principle with its low-power counterpart, the lateral MOSFET.The power MOSFET is the most widely used low-voltage (that is, less than 200 V) switch. It can be found in most power supplies, DC to DC converters, and low voltage motor controllers.