section 15172
... mode) and closed loop (PI) control, providing significant energy savings while minimizing operating hours on driven equipment. When the sleep function senses a minimal deviation of a feedback signal from set point, or low demand in open loop control, the system reacts by stopping the driven equipmen ...
... mode) and closed loop (PI) control, providing significant energy savings while minimizing operating hours on driven equipment. When the sleep function senses a minimal deviation of a feedback signal from set point, or low demand in open loop control, the system reacts by stopping the driven equipmen ...
Quickie® Pulse™ Service Manual
... • Store each Printed Circuit Board in an antistatic bag with an external cushioning bubble-wrap layer until assembled to wheelchair. Antistatic bag must have metal content to protect the printed circuit board. Gray bag protects from ESD, pink bag or bubble wrap does not protect as well. • Always wea ...
... • Store each Printed Circuit Board in an antistatic bag with an external cushioning bubble-wrap layer until assembled to wheelchair. Antistatic bag must have metal content to protect the printed circuit board. Gray bag protects from ESD, pink bag or bubble wrap does not protect as well. • Always wea ...
Tantalum & Niobium Capacitors Technical Standards and Benefits
... V = application voltage R = total resistance of the circuit The actual current through the capacitor is defined by the lower value calculated from equations [a] and [b]. Solid Tantalum capacitors have a limited ability to withstand voltage and current surges. Such current surges can cause a capacito ...
... V = application voltage R = total resistance of the circuit The actual current through the capacitor is defined by the lower value calculated from equations [a] and [b]. Solid Tantalum capacitors have a limited ability to withstand voltage and current surges. Such current surges can cause a capacito ...
Single-Phase AC Power Circuits
... late 19th century, following key developments in the field of electricity, mainly the invention of the polyphase system of electrical distribution by scientist Nikola Tesla, and the development of mathematical analysis of electricity by Charles Steinmetz, James Clerk Maxwell, and William Thomson (Lo ...
... late 19th century, following key developments in the field of electricity, mainly the invention of the polyphase system of electrical distribution by scientist Nikola Tesla, and the development of mathematical analysis of electricity by Charles Steinmetz, James Clerk Maxwell, and William Thomson (Lo ...
TPS650240 数据资料 dataSheet 下载
... converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin high. The TPS65024x also integrate two general purpose 200mA LDO voltage regulators, which are ...
... converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin high. The TPS65024x also integrate two general purpose 200mA LDO voltage regulators, which are ...
Hola Agustin - Portal UniMAP
... The reason is that as the armature voltage decrease (due to the effects just mentioned), there is a corresponding drop in field current. Therefore, the flux decrease even more with increasing load than it did before. Thus, the voltage regulation curve of a selfexcited generator drops more steeply th ...
... The reason is that as the armature voltage decrease (due to the effects just mentioned), there is a corresponding drop in field current. Therefore, the flux decrease even more with increasing load than it did before. Thus, the voltage regulation curve of a selfexcited generator drops more steeply th ...
Circuit Breaker Selection
... equal to or greater than load current. Note that Power/Vac circuit breakers are 100% rated, and have no continuous overload rating. When considering circuit breaker applications with a generator, a motor, a transformer, or other apparatus having a long-time overload rating, the circuit breaker (and ...
... equal to or greater than load current. Note that Power/Vac circuit breakers are 100% rated, and have no continuous overload rating. When considering circuit breaker applications with a generator, a motor, a transformer, or other apparatus having a long-time overload rating, the circuit breaker (and ...
PSIM User Manual
... This circuit on the left uses a switching gating block (see Section 2.2.4). The switching gating pattern and the frequency are pre-defined, and will remain unchanged throughout the simulation. The circuit on the right uses an alpha controller (see Section 4.7.2). The delay angle alpha, in degree, is ...
... This circuit on the left uses a switching gating block (see Section 2.2.4). The switching gating pattern and the frequency are pre-defined, and will remain unchanged throughout the simulation. The circuit on the right uses an alpha controller (see Section 4.7.2). The delay angle alpha, in degree, is ...
PAM2845
... The PAM2845 employs a current-mode step-up converter that drives six parallel strings of LEDs connected in multiple series. This built-in string current-control circuit achieves ±1% typical current matching between strings, which ensures even brightness for all LEDs. Separate feedback loops limit th ...
... The PAM2845 employs a current-mode step-up converter that drives six parallel strings of LEDs connected in multiple series. This built-in string current-control circuit achieves ±1% typical current matching between strings, which ensures even brightness for all LEDs. Separate feedback loops limit th ...
Buck converter
... Capacitors tend to keep the voltage constant (voltage “inertia”). An ideal capacitor with infinite capacitance acts as a constant voltage source. Thus, a capacitor cannot be connected in parallel with a voltage source or a switch (otherwise KVL would be violated, i.e. there will be a short-circuit) ...
... Capacitors tend to keep the voltage constant (voltage “inertia”). An ideal capacitor with infinite capacitance acts as a constant voltage source. Thus, a capacitor cannot be connected in parallel with a voltage source or a switch (otherwise KVL would be violated, i.e. there will be a short-circuit) ...
Switch-on-to-Fault Schemes in the Context of Line Relay
... 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 ...
LM2574 - 0.5 A, Adjustable Output Voltage, Step
... These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2574 are offered by several different inductor manufacturers. Since the LM2574 converter is a switch−mode power supply, its effi ...
... These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2574 are offered by several different inductor manufacturers. Since the LM2574 converter is a switch−mode power supply, its effi ...
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.