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MAX8752 TFT LCD Step-Up DC-DC Converter General Description Features
MAX8752 TFT LCD Step-Up DC-DC Converter General Description Features

... soft-start timer expires (13ms typ). The soft-start routine minimizes the inrush current and voltage overshoot and ensures a well-defined startup behavior. ...
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Shunt reactor switching transients at high compensation levels
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... Introduction: Shunt reactors are commonly employed in substations as a cost effective way of reducing the voltage rise, during conditions of low load [7].When the transmission line is loaded below the surge impedance load (SIL), the line experiences a voltage rise due to the line’s natural shunt cap ...
AP6503A Description Pin Assignments
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... protection feature gets activated. The internal thermal sense circuitry turns the IC off thus preventing the power switch from damage. A hysteresis in the thermal sense circuit allows the device to cool down to approximately +120°C before the IC is enabled again through soft start. This thermal hyst ...
MAX14626 High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector General Description
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Effects of Power Supply Resonances in Onset Studies of
Effects of Power Supply Resonances in Onset Studies of

... voltage spikes rising several hundred volts from a 350 V baseline, each lasting several µs. Different conclusions about the physical nature of the voltage hash would be drawn if each of these measurements were inspected separately—but from the discussion of Sec. III.A, the correct interpretation of ...
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R6012ANJ

... The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from RO ...
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... Offset voltage is defined as the output voltage at 0 kPa rated pressure. Positive span voltage is defined as the algebraic difference between the output voltage at 50 kPa rated pressure and the output voltage at 0 kPa rated pressure. Negative span voltage is defined as the algebraic difference betwe ...
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IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... applications. The multilevel inverters have several advantages over the traditional converters: operation with voltages over the switching device rating, reduced common-mode voltages, and smaller voltage changes (dv/dt). These inverters can also effectively reduce the switching stress and can provid ...
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... It can be approximated by subtransient reactance. For a salient pole machine it is taken as a mean of X d" and X q" . Zero Sequence Impedance of Synchronous Machines Zero Sequence Currents cannot create rotating mmf. In fact, with sinusoidally distributed three phase windings, the net flux at any po ...
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... voltage and drain current that a device can safely handle when it is forward biased, or when it is on, or being turned on. Because these curves include the limitations of simultaneous high voltage and high current, up to the rating of the device, they are especially useful to designers of linear sys ...
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... total circuit would be slightly higher than they appear to be at the regulator. One method of approximating this is to add a small value, probably less than 1%, to the total of the calculated transformer and secondary voltagedrop values. Another approach is suggested by the fact that the capacitors ...
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... device and it comes in two general types: the Bipolar Junction Transistor (BJT) and the Field Effect Transistor (FET). Here we will describe the system characteristics of the BJT configuration and explore its use in fundamental signal shaping and amplifier circuits. The BJT is a three terminal devic ...
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Subgap biasing of Superconducting Tunnel Junctions without a Magnetic Field

... The complete Resistive and Capacitive Shunted Junction 共RCSJ兲 form of the current is used for each junction and the system equations are obtained by current conservation and fluxoid quantization. Such a model was explained previously.3 The results of this model are shown in Fig. 4共b兲. As can be seen ...
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AN4721, S12ZVH: Hardware Design Guidelines

... power supply, the rest of the MCU will continue to operate. The VDDC pin requires a 100 nF or larger X7R ceramic or tantalum capacitor to reduce noise in the power supply. The VDDC regulator can be enabled or disabled by software. When the user does not require CAN communications, the VDDC pin must ...
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... In this part, an algorithm is proposed for the DVR to restore the PCC voltage, limit the fault current, and, therefore, protect the DVR components. The flux-charge model here is used in a way so that the DVR acts as a virtual inductance with a variable value in series with the distribution feeder. T ...
2 Electrical Systems
2 Electrical Systems

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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.
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