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... series circuit has a time constant of 600 μs, and the maximum current is 300 mA. What’s the value of the inductance? 3. Calculate the resistance in an RL circuit in which L = 2.50 H and the current increases to 90.0% of its final value in 3.00 s. 4. How much energy is stored in a 70 mH inductor at a ...
ECE1250F14_PracticeEx1p2soln
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OHM’S LAW

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Section 13.3: Alternating Current
Section 13.3: Alternating Current

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Ohm`s Law and Joule`s Law

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... going to be switching from high to low at a user set period (see Figure 1). This pulse width modulated signal will go into a resistive, capacitive or inductive load. As mentioned earlier, when the output is high the chip will be able to source approximately 7mA. To be able to drive some of our loads ...
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Circuits1 – VIR

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AI010 507(P)Industrial Electronics Lab
AI010 507(P)Industrial Electronics Lab

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Lecture 7 DC Circuit

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... In the first case, the resistance of the bulb is 1kΩ and in second case, it is 4.4 kΩ. It is not possible since ohm's law is not followed the increase in resistance is due to heating of the filament of the bulb when it is connected to 120 V mains None of these ...
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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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