analysis of a dual buck converter fed four-quadrant dc drive
... K.S.R.M.C.E, kadapa, email: [email protected] Abstract: The four-quadrant DC drive operation is well established, however, the increased use of the existing at same time to improved power quality AC-DC converters (IPQC’s). In this paper the performance of the separately excited dc machin ...
... K.S.R.M.C.E, kadapa, email: [email protected] Abstract: The four-quadrant DC drive operation is well established, however, the increased use of the existing at same time to improved power quality AC-DC converters (IPQC’s). In this paper the performance of the separately excited dc machin ...
NCP3135 - 5 A Integrated Synchronous Buck Converter
... FET is ON during the off−time. The switching is synchronized to an internal clock thus the switching frequency is fixed. In Automatic CCM/DCM mode, the high−side FET is ON during the on−time and low−side FET is ON during the off−time until the inductor current reaches zero. An internal zero−crossing ...
... FET is ON during the off−time. The switching is synchronized to an internal clock thus the switching frequency is fixed. In Automatic CCM/DCM mode, the high−side FET is ON during the on−time and low−side FET is ON during the off−time until the inductor current reaches zero. An internal zero−crossing ...
electrical engineering practice lab manual
... In power circuit, wiring should be designed for the load which it is supposed to carry current. Power sub circuits should be kept separate from lighting and fan sub-circuits. Wiring should be done on the distribution system with main branch distribution boards at convenient centers. Wring should be ...
... In power circuit, wiring should be designed for the load which it is supposed to carry current. Power sub circuits should be kept separate from lighting and fan sub-circuits. Wiring should be done on the distribution system with main branch distribution boards at convenient centers. Wring should be ...
BDTIC www.BDTIC.com/infineon Phase Cut Dimmable Isolated Flyback Converter for LED Retrofit Bulb with
... well as reduce inrush current. As the damping resistors can cause significant power loss, they can be bypassed shortly after the TRIAC firing so as to improve efficiency. This is achieved with circuit formed by R5, C2, and thyristor Q1. Each time when TRIAC turns on, due to the time delay produced b ...
... well as reduce inrush current. As the damping resistors can cause significant power loss, they can be bypassed shortly after the TRIAC firing so as to improve efficiency. This is achieved with circuit formed by R5, C2, and thyristor Q1. Each time when TRIAC turns on, due to the time delay produced b ...
Gating, Latching, and Holding of SCRs and Triacs
... *OBQQMJDBUJPOTXIFSFIJHIEJEU IJHITVSHF BOEGBTU turn-on are expected, gate drive current should be steep rising (1 μs rise time) and at least twice rated IGT or higher with minimum 3 μs pulse duration. However, if gate drive current magnitude is very high, then duration may have to be limite ...
... *OBQQMJDBUJPOTXIFSFIJHIEJEU IJHITVSHF BOEGBTU turn-on are expected, gate drive current should be steep rising (1 μs rise time) and at least twice rated IGT or higher with minimum 3 μs pulse duration. However, if gate drive current magnitude is very high, then duration may have to be limite ...
PAM2321 Description Pin Assignments
... In continuous mode, the source current of the top MOSFET is a square wave of duty cycle VOUT/VIN. To prevent large voltage transients, a low ESR input capacitor sized for the maximum RMS current must be used. The maximum RMS capacitor current is given by: ...
... In continuous mode, the source current of the top MOSFET is a square wave of duty cycle VOUT/VIN. To prevent large voltage transients, a low ESR input capacitor sized for the maximum RMS current must be used. The maximum RMS capacitor current is given by: ...
Fault current reduction by SFCL in a distribution system with PV
... cycles, whereas SFCL takes half a cycle for limiting the fault current. ...
... cycles, whereas SFCL takes half a cycle for limiting the fault current. ...
MP830
... and voltage sensing relay, that can automatically set up trip points within specified limits around the normal operating conditions of a particular motor system. An adjustable restart timer, triggered by an underload fault can be used to restart the motor system after a pre-set time. Motor Systems u ...
... and voltage sensing relay, that can automatically set up trip points within specified limits around the normal operating conditions of a particular motor system. An adjustable restart timer, triggered by an underload fault can be used to restart the motor system after a pre-set time. Motor Systems u ...
REF3033-Q1 数据资料 dataSheet 下载
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
Current Sensing Chip Resistors
... Yageo’s current sensor chip resistors are optimized for current sensing control. The current sensor current sensors, available from 0.05 to 5 watts, are applicable to battery pack, power supply and converter, and are suitable for use in diverse power control circuit of notebook computer or the hard ...
... Yageo’s current sensor chip resistors are optimized for current sensing control. The current sensor current sensors, available from 0.05 to 5 watts, are applicable to battery pack, power supply and converter, and are suitable for use in diverse power control circuit of notebook computer or the hard ...
AZ25308314
... Although the computation of Pdc is generally slow and updated once or twice in a cycle, being a small value compared Plavg to, it does not play a significant role in transient performance of the compensator. In some applications, such as the telecommunications industry uses several parallel-connecte ...
... Although the computation of Pdc is generally slow and updated once or twice in a cycle, being a small value compared Plavg to, it does not play a significant role in transient performance of the compensator. In some applications, such as the telecommunications industry uses several parallel-connecte ...
Ion Getter Pumps
... The IGP was used in almost every single vacuum application in high vacuum pressure ranges of up to <10-6 mbar before the promotion of turbo molecular pumps. Nowadays, IGP with larger pumping speeds are mostly used in pressure ranges <10-9 mbar. For those applications, ion getter pumps remain the cle ...
... The IGP was used in almost every single vacuum application in high vacuum pressure ranges of up to <10-6 mbar before the promotion of turbo molecular pumps. Nowadays, IGP with larger pumping speeds are mostly used in pressure ranges <10-9 mbar. For those applications, ion getter pumps remain the cle ...
AL9910-5 - Diodes Incorporated
... both - depending on the application. Pulling the PWM_D pin to ground will turn off the AL9910. When disabled, the AL9910’s quiescent current is typically 0.5mA (0.65 for AL9910A). Reducing the LD voltage will reduce the LED current but it will not entirely turn off the external power transistor and ...
... both - depending on the application. Pulling the PWM_D pin to ground will turn off the AL9910. When disabled, the AL9910’s quiescent current is typically 0.5mA (0.65 for AL9910A). Reducing the LD voltage will reduce the LED current but it will not entirely turn off the external power transistor and ...
Lecture:Khalid Al-Janabi Submerged Arc Welding Submerged arc
... ductile welds. In open-air welding with normal equipment some contamination with argon always occurs. Deoxidants are added to the filler metal as a consequence when welding rim- ming or semi-skilled carbon steel, monel metal, copper, cupro-nickel and nickel. Gopper can be welded with nitrogen as a s ...
... ductile welds. In open-air welding with normal equipment some contamination with argon always occurs. Deoxidants are added to the filler metal as a consequence when welding rim- ming or semi-skilled carbon steel, monel metal, copper, cupro-nickel and nickel. Gopper can be welded with nitrogen as a s ...
MAX1744/MAX1745 High-Voltage, Step-Down DC-DC Controllers in µMAX General Description
... improved efficiency. The MAX1744/MAX1745 automatically switch from PWM operation at medium and heavy loads to pulse-skipping operation at light loads to improve light-load efficiency. The low 90μA quiescent current further optimizes these parts for applications where low input current is critical. O ...
... improved efficiency. The MAX1744/MAX1745 automatically switch from PWM operation at medium and heavy loads to pulse-skipping operation at light loads to improve light-load efficiency. The low 90μA quiescent current further optimizes these parts for applications where low input current is critical. O ...
R2 Series) DDTCxxxxLP (R1 Features
... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
... Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use o ...
Specification 4291 - Hubbell Industrial Controls
... reverse current or “Drop” contactor is also a mill-type contactor. The commonly used discharge resistor has been replaced by a high thermal capacity varistor connected in series with a silicon rectifier to assure a permanently connected independent discharge path at all times around the magnet. Main ...
... reverse current or “Drop” contactor is also a mill-type contactor. The commonly used discharge resistor has been replaced by a high thermal capacity varistor connected in series with a silicon rectifier to assure a permanently connected independent discharge path at all times around the magnet. Main ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.