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EE42/100 Lecture 9
EE42/100 Lecture 9

MAX687/MAX688/MAX689 High-Accuracy, Low-Dropout Linear Regulators _______________General Description
MAX687/MAX688/MAX689 High-Accuracy, Low-Dropout Linear Regulators _______________General Description

... The RC circuit attached to the ON input in Figure 1 achieves automatic start-up at power-on by delivering a brief pulse whenever the input voltage is suddenly applied. This circuit is not suitable for applications where the input voltage rises slowly. The RC values should be chosen to keep ON high u ...
Circuit Theorems
Circuit Theorems

... 4. Thevenin: Replace circuit with VOC in series with RTh Norton: Replace circuit with ISC in parallel with RTh Note: for 3(b) the equivalent network is merely RTh , that is, no voltage (or current) source. ...
Current`s Physical Components Theory and p
Current`s Physical Components Theory and p

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TMC603A Datasheet
TMC603A Datasheet

... this, the TMC603 references the gate drive to the bridge center (BM) and has to be able to drive it to a voltage lying above the positive bridge power supply voltage VM. This is realized by a charge pump voltage generated from the switching regulator via a Villard circuit. When closing the high-side ...
PHY222 – Lab 4 Ohm`s Law and Electric Circuits
PHY222 – Lab 4 Ohm`s Law and Electric Circuits

Bipolar Junction Transistors
Bipolar Junction Transistors

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Lecture13: LC & LCR Circuits, EM Oscillations

Chapter 21: AC Circuits
Chapter 21: AC Circuits

... Example (text problem 21.4): A circuit breaker trips when the rms current exceeds 20.0 A. How many 100.0 W light bulbs can run on this circuit without tripping the breaker? (The voltage is 120 V rms.) Each light bulb draws a current given by: ...
DOC
DOC

... right must be at the same potential as they are connected by conductors assumed to have negligible resistance. Similarly for all points inside the dotted ellipse on the left. So the three voltmeters are measuring the same voltage. ...
DC4201704708
DC4201704708

... Fig.2. Average current mode control using PI controller. Here for average current mode control voltage control loop and current control loop are used. Input current iL is compared with the reference current iref. The current reference iref is obtained by scaling down the line voltage by a resistive ...
RT8809 - Richtek Technology
RT8809 - Richtek Technology

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Precision Adjustable Current-Limited Power

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8 MHz Rail-to-Rail Operational Amplifiers AD8519/AD8529

... and VOUT is equal to VIN × R5 × (R4 || R1 + R2 + R3). Note that Node A should be VIN inverted or virtual ground, but in this condition, Node A is simply tracking VIN. Given a sine wave input centered around virtual ground, glitches are generated at the sharp negative peaks of the rectified sine wave ...
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VU1 Electricity 2009

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AD8519 数据手册DataSheet 下载

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EE 42/100 Lecture 10: Op-Amp Based Circuits

Insulated-Gate Transistors Simplify AC-Motor Speed Control
Insulated-Gate Transistors Simplify AC-Motor Speed Control

... IGT’s Miller-effect equivalent capacitance. Figure 3 illustrates a typical photovoltaic-coupler drive along with its transient response. In some applications, the photovoltaic element can charge a storage capacitor that’s subsequently switched with a phototransistor isolator. This isolator technique ...
CMOS analog integrated circuits based on weak inversion operations
CMOS analog integrated circuits based on weak inversion operations

Constant Current Control for DC-DC Converters
Constant Current Control for DC-DC Converters

... and capacitance. This will result in nonlinearities for signals that change more rapidly than this RC discharge time. This is especially important at light loads. Practically, this type of current controller is limited to relatively low bandwidth applications due to phase shift caused by the DC-DC c ...
LM3151/52/53 SIMPLE SWITCHER
LM3151/52/53 SIMPLE SWITCHER

... These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ...
Circuits
Circuits

... The voltmeter will read 12 V, since the potential difference across the resistor must be equal to the potential difference across the battery. As we will see later, if there were more than one resistor in the circuit, there would not necessarily be 12 volts across each. The power can be found by P = ...
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TRIAC



TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor.TRIACs are a subset of thyristors and are closely related to silicon controlled rectifiers (SCR). However, unlike SCRs, which are unidirectional devices (that is, they can conduct current only in one direction), TRIACs are bidirectional and so allow current in either direction. Another difference from SCRs is that TRIAC current can be enabled by either a positive or negative current applied to its gate electrode, whereas SCRs can be triggered only by positive current into the gate. To create a triggering current, a positive or negative voltage has to be applied to the gate with respect to the MT1 terminal (otherwise known as A1).Once triggered, the device continues to conduct until the current drops below a certain threshold called the holding current.The bidirectionality makes TRIACs very convenient switches for alternating-current (AC) circuits, also allowing them to control very large power flows with milliampere-scale gate currents. In addition, applying a trigger pulse at a controlled phase angle in an AC cycle allows control of the percentage of current that flows through the TRIAC to the load (phase control), which is commonly used, for example, in controlling the speed of low-power induction motors, in dimming lamps, and in controlling AC heating resistors.
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