KP2417961805
... subtracting V*Fabc from VFabc is multiplied to a constant coefficient and the obtained value is added to V*Fabc . Applying this method distinctively improves operation of series inverter. C. DC-DC Converter controlling to obtain the Maximum Point Of PV-Array: At, present Pv systems are not very effi ...
... subtracting V*Fabc from VFabc is multiplied to a constant coefficient and the obtained value is added to V*Fabc . Applying this method distinctively improves operation of series inverter. C. DC-DC Converter controlling to obtain the Maximum Point Of PV-Array: At, present Pv systems are not very effi ...
Evaluates: MAX5943A/B/C/D/E MAX5943A Evaluation Kit General Description Features
... output signal that is asserted low to GND when a current-limit fault condition has occurred. The FAULT output is pulled up to IN by resistor R2 during normal operating conditions. During a fault occurrence, the MAX5943A turns off MOSFETs N1-A and N1-B and asserts a logic-low signal on the FAULT outp ...
... output signal that is asserted low to GND when a current-limit fault condition has occurred. The FAULT output is pulled up to IN by resistor R2 during normal operating conditions. During a fault occurrence, the MAX5943A turns off MOSFETs N1-A and N1-B and asserts a logic-low signal on the FAULT outp ...
AAT3150 - Skyworks
... The AAT3150 is a dual mode load switch (1X) and high efficiency (1.5X) charge pump device intended for white LED backlight applications. To maximize power conversion efficiency, an internal sensing circuit monitors the voltage required on each constant current sink input and sets the load switch and ...
... The AAT3150 is a dual mode load switch (1X) and high efficiency (1.5X) charge pump device intended for white LED backlight applications. To maximize power conversion efficiency, an internal sensing circuit monitors the voltage required on each constant current sink input and sets the load switch and ...
caribbean examinations council report on candidates` work in
... form a p-type semiconductor material. The majority of candidates, approximately 40 per cent, did not provide the expected answer. Candidates who responded incorrectly to this question, for example, placed phosphorus as the impurity to be added for a p-type material. Part (a) (ii) required candidates ...
... form a p-type semiconductor material. The majority of candidates, approximately 40 per cent, did not provide the expected answer. Candidates who responded incorrectly to this question, for example, placed phosphorus as the impurity to be added for a p-type material. Part (a) (ii) required candidates ...
A CMOS image sensor for low light applications
... of the greater Vgs of M 2 in the same pixel. The photo current will thus be partially cancelled by current flowing from ground to the source of M 2. In order to reduce the likelihood that the in-pixel photodiodes might become forward biased, P DMC is designed to have twice the area of an inpixel pho ...
... of the greater Vgs of M 2 in the same pixel. The photo current will thus be partially cancelled by current flowing from ground to the source of M 2. In order to reduce the likelihood that the in-pixel photodiodes might become forward biased, P DMC is designed to have twice the area of an inpixel pho ...
A Four-Level pi-Type Converter for Low
... frequency and achieve a higher power density. Although the output harmonics can be further reduced with converters of higher number of voltage levels, e.g. four-level or five-level, the main concern is the increased complexity regarding the circuit (e.g. number of devices, gate drive, etc) and contr ...
... frequency and achieve a higher power density. Although the output harmonics can be further reduced with converters of higher number of voltage levels, e.g. four-level or five-level, the main concern is the increased complexity regarding the circuit (e.g. number of devices, gate drive, etc) and contr ...
eet 3086 switchgear and protection
... With the power transformers supplying power to a balanced three-phase load, initiate earth faults at the primary and secondary windings of the power transformers and observe what happens in the differential protection system. You will close contactor CR3 to allow operation of the differential protec ...
... With the power transformers supplying power to a balanced three-phase load, initiate earth faults at the primary and secondary windings of the power transformers and observe what happens in the differential protection system. You will close contactor CR3 to allow operation of the differential protec ...
Application of Optical Sensors
... object may not be detected. Conversely, the sensor may detect a non-targeted feature because it reflects the ambient light much more than the surroundings. Therefore, the influence of ambient light must be minimized by using optical filters, inspired mechanical design and, if necessary, AC operation ...
... object may not be detected. Conversely, the sensor may detect a non-targeted feature because it reflects the ambient light much more than the surroundings. Therefore, the influence of ambient light must be minimized by using optical filters, inspired mechanical design and, if necessary, AC operation ...
Transformers
... transformers are optimized for the load losses calculated at 35% of the name plate rating. This 35% represents an industry average load of most LVGP transformers. Applications Any situation where the available voltage must be changed to accommodate the voltage required by the specific electrical cir ...
... transformers are optimized for the load losses calculated at 35% of the name plate rating. This 35% represents an industry average load of most LVGP transformers. Applications Any situation where the available voltage must be changed to accommodate the voltage required by the specific electrical cir ...
A5973D Datasheet - STMicroelectronics
... Beating frequency noise is an issue when more than one voltage rail is on the same board. A simple way to avoid this issue is to operate all the regulators at the same switching frequency. The synchronization feature of a set of the A5973D is simply get connecting together their SYNCH pin. The devic ...
... Beating frequency noise is an issue when more than one voltage rail is on the same board. A simple way to avoid this issue is to operate all the regulators at the same switching frequency. The synchronization feature of a set of the A5973D is simply get connecting together their SYNCH pin. The devic ...
BDTIC C C M - P F C
... operating range is between 11V and 26V. The turn-on threshold is at 11.8V and under voltage occurs at 11V. There is no internal clamp for a limitation of the power ...
... operating range is between 11V and 26V. The turn-on threshold is at 11.8V and under voltage occurs at 11V. There is no internal clamp for a limitation of the power ...
AA21156163
... technologies additionally offer considerable advantages over existing methods in terms of space reductions and fast effective damping. The GTO thyristors enable the design of the solid-state shunt reactive compensation and active filtering equipment based upon switching convertor technology. These p ...
... technologies additionally offer considerable advantages over existing methods in terms of space reductions and fast effective damping. The GTO thyristors enable the design of the solid-state shunt reactive compensation and active filtering equipment based upon switching convertor technology. These p ...
650V IGBT4 the optimized device
... In Fig. 2 the switch-off process in EconoDUAL™3 modules is compared. This specific high current setup is not ideally suited for the 600V IGBT3 [4]. Consequently, the switch-off of 600A and a DC link voltage of 200V at 25°C effects a quite high overshoot voltage VCE,max and a snap-off with oscillatio ...
... In Fig. 2 the switch-off process in EconoDUAL™3 modules is compared. This specific high current setup is not ideally suited for the 600V IGBT3 [4]. Consequently, the switch-off of 600A and a DC link voltage of 200V at 25°C effects a quite high overshoot voltage VCE,max and a snap-off with oscillatio ...
initial current reduction of synchronous motors with salient poles by
... a day with the average life span of 40 years and have the lowest cost of material removal per unit. For the powering of the main generator group, which consists of three DC generators with total capacity Sr = 1250 kW, synchronous motors with salient poles, rated power S = 630 kV·A, are applied. The ...
... a day with the average life span of 40 years and have the lowest cost of material removal per unit. For the powering of the main generator group, which consists of three DC generators with total capacity Sr = 1250 kW, synchronous motors with salient poles, rated power S = 630 kV·A, are applied. The ...
... ■ When a power thermistor is used, inrush current will increase at high ambient temperature because of the reduction of the resistance of the thermistor. Please do not turn on/off the input repeatedly within a short period of time. Keep appropriate intervals to allow the power supply to cool down su ...
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.