Switch-on-to-Fault Schemes in the Context of Line Relay Loadability
... detection of close-in three-phase faults under what is considered to be the “worst case” (highest) impedance to the source bus. 2. When an impedance protection scheme uses line-side voltage transformers, SOTF current fault detectors may operate significantly faster than impedance units when a breake ...
... detection of close-in three-phase faults under what is considered to be the “worst case” (highest) impedance to the source bus. 2. When an impedance protection scheme uses line-side voltage transformers, SOTF current fault detectors may operate significantly faster than impedance units when a breake ...
MAX16050/MAX16051 Voltage Monitors/Sequencer Circuits with
... can reverse sequence the outputs. In this situation, each voltage is turned off sequentially until it reaches a 250mV level, at which point, the next supply is turned off. The MAX16050/MAX16051 also provide internal pulldown circuitry that turns on during power-down, to help discharge large output c ...
... can reverse sequence the outputs. In this situation, each voltage is turned off sequentially until it reaches a 250mV level, at which point, the next supply is turned off. The MAX16050/MAX16051 also provide internal pulldown circuitry that turns on during power-down, to help discharge large output c ...
RT7275/76 - Richtek Technology
... duty cycle applications. After the on-time one-shot period, there is a minimum off-time period before any further regulation decisions can be considered. This arrangement avoids the need to make any decisions during the noisy time periods just after switching events, when the switching node (SW) ris ...
... duty cycle applications. After the on-time one-shot period, there is a minimum off-time period before any further regulation decisions can be considered. This arrangement avoids the need to make any decisions during the noisy time periods just after switching events, when the switching node (SW) ris ...
Voltage detector with sense input and external
... The STM1831 has an open drain, active-low output which sinks current when the output is asserted. Connect a pull-up resistor from RST to any supply voltage up to 6 V (see Figure 4). Select a resistor value large enough to register a logic low, and small enough to register a logic high, while all of ...
... The STM1831 has an open drain, active-low output which sinks current when the output is asserted. Connect a pull-up resistor from RST to any supply voltage up to 6 V (see Figure 4). Select a resistor value large enough to register a logic low, and small enough to register a logic high, while all of ...
AN-3004 - Fairchild
... Once triggered, the detector stays latched in the "on state" until the current flow through the detector drops below the holding current (IH) which is typically 100 µA. At this time, the detector reverts to the "off" (non-conducting) state. The detector may be triggered "on" not only by IFT but also ...
... Once triggered, the detector stays latched in the "on state" until the current flow through the detector drops below the holding current (IH) which is typically 100 µA. At this time, the detector reverts to the "off" (non-conducting) state. The detector may be triggered "on" not only by IFT but also ...
Full-power converter based test bench for low voltage
... the voltage dip seen at the wind turbine power converter terminal is taken into account in the fullpower converter based test bench by the inductance L1, value of which is selected to be equal to the transformer short-circuit reactance. Naturally, the need of inductance L1 between the grid emulator ...
... the voltage dip seen at the wind turbine power converter terminal is taken into account in the fullpower converter based test bench by the inductance L1, value of which is selected to be equal to the transformer short-circuit reactance. Naturally, the need of inductance L1 between the grid emulator ...
BCX51/ 52/ 53 Features Mechanical Data
... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
Three Phase - Single Phase Converter
... 2.10 Single Phase Voltage Output Design 2 . . . . . . . . . . . . . . . . . . . . . ...
... 2.10 Single Phase Voltage Output Design 2 . . . . . . . . . . . . . . . . . . . . . ...
Aalborg Universitet Control Architecture for Parallel-Connected Inverters in Uninterruptible Power Systems
... This paper is organized as follows. Section II discusses the UPS topologies that are being used and presents the proposed control structure. In order to analyze system stability, a mathematical model is presented and analyzed in Section III. Experimental results are presented in Section IV to prove ...
... This paper is organized as follows. Section II discusses the UPS topologies that are being used and presents the proposed control structure. In order to analyze system stability, a mathematical model is presented and analyzed in Section III. Experimental results are presented in Section IV to prove ...
— mWSaver™ PWM Controller FAN6756AHL FAN 67
... FAN6756AHL modulates the PWM frequency as a function of the FB voltage to improve the medium- and light-load efficiency, as shown in Figure 28. Since the output power is proportional to the FB voltage in Current-Mode control, switching frequency decreases as load decreases. In heavy-load conditions, ...
... FAN6756AHL modulates the PWM frequency as a function of the FB voltage to improve the medium- and light-load efficiency, as shown in Figure 28. Since the output power is proportional to the FB voltage in Current-Mode control, switching frequency decreases as load decreases. In heavy-load conditions, ...
heater energisation circuitry - MSS web-site
... It is believed by RAL that the non symmetrical scheme proposed has advantages over its symmetrical counterpart. Any non symmetrical quench can be detected by three channels without necessitating the quench propagating beyond given physical areas within the coil. Any symmetrical quench can be detecte ...
... It is believed by RAL that the non symmetrical scheme proposed has advantages over its symmetrical counterpart. Any non symmetrical quench can be detected by three channels without necessitating the quench propagating beyond given physical areas within the coil. Any symmetrical quench can be detecte ...
CONTENTS - Hodder Education
... When the coil is horizontal, the forces are furthest apart and have their maximum turning effect on the coil. With no change to the forces, the coil would eventually come to rest in the vertical position. However, as the coil overshoots the vertical, the commutator changes the direction of the curre ...
... When the coil is horizontal, the forces are furthest apart and have their maximum turning effect on the coil. With no change to the forces, the coil would eventually come to rest in the vertical position. However, as the coil overshoots the vertical, the commutator changes the direction of the curre ...
PAM2312 Description Pin Assignments
... This formula has a maximum at VIN = 2VOUT, where IRMS = IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that the capacitor manufacturer's ripple current ratings are often based on 2000 hours of life. This makes i ...
... This formula has a maximum at VIN = 2VOUT, where IRMS = IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that the capacitor manufacturer's ripple current ratings are often based on 2000 hours of life. This makes i ...
LT3012 - 250mA, 4V to 80V Low Dropout
... output will be off when the ⎯SHDN pin is pulled low. The SHDN pin can be driven either by 5V logic or open-collector logic with a pull-up resistor. The pull-up resistor is only required to supply the pull-up current of the open-collector gate, normally several microamperes. If unused, the SHDN pin m ...
... output will be off when the ⎯SHDN pin is pulled low. The SHDN pin can be driven either by 5V logic or open-collector logic with a pull-up resistor. The pull-up resistor is only required to supply the pull-up current of the open-collector gate, normally several microamperes. If unused, the SHDN pin m ...
Application Note Applications for Depletion MOSFETs
... The power dissipation for Q1 can be calculated from the voltage drop across it times the current through it: ...
... The power dissipation for Q1 can be calculated from the voltage drop across it times the current through it: ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.