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2.1 Current Voltage Resistance and Power Word Document
2.1 Current Voltage Resistance and Power Word Document

... The components sit side by side and connect to more than one other component. The circuit below shows 2 identical lamps connected in parallel 12 V ...
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... gate pulses separated by 1200 to the thyristers gates with sufficient width time in order to turn on, also synchronism with the supply voltages, and can be varied along the positive half cycle of the thyrister anode cathode voltages. Fig. (1) illustrates the block diagram of the firing circuit, it m ...
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... 0.3µA by powering down the entire IC except for the CTRL voltage-detection circuitry. CCOMP is discharged during shutdown, allowing the device to reinitiate softstart when it is enabled. Although the internal N-channel MOSFET does not switch in shutdown, there is still a DC current path between the ...
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Evaluation Board User Guide UG-336

... By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the An ...
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... High speed switching and relatively large peak currents in a synchronous-rectified buck converter make the PCB layout a very important part of design. Switching current from one power device to another can generate voltage spikes across the impedances of the interconnecting bond wires and circuit tr ...
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... can plug the other end of the leads into the jacks of spooled wire and collect resistance data. Collect data for 5, 6, 7, 9, and 10 meter lengths of wires. After you have collected the resistances of the various lengths of wire, create a plot of R (y axis) versus L (x axis). In addition to the point ...
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electricity practice problems

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... rating only and functional operation of the device at these or any other condition s above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Absolute maximum ratings appl ...
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... There is a rule of thumb to select an ESR capacitor equal to the half of the calculated value with Equation 6. This rule will take into account the process variation of the capacitor plus some margin for a startup operation of the power supply at very low ambient temperature. The final check will in ...
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High Voltage Direct Current Transmission - ac

... Power Transmission was initially carried out in the early 1880s using Direct Current (d.c.). With the availability of transformers (for stepping up the voltage for transmission over long distances and for stepping down the voltage for safe use), the development of robust induction motor (to serve th ...
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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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