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ECE 2110 Lab Manual - Clemson University
ECE 2110 Lab Manual - Clemson University

... Ammeters are used to measure the flow of electrical current in a circuit. Theoretically, measuring devices should not affect the circuit being studied. Thus, for ammeters, it is important that their internal resistance be very small (ideally near zero) so they will not constrict the flow of current. ...
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... protection device. When the loads are located more than 30 meters away from the incoming-end protection device, it is necessary to provide for additional fine protection as close as possible to sensitive loads. The phenomena of wave reflection is increasing from 10 meters (see chapter 6.5) b the risk ...
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... Operating one-shots with values of the REXT outside recommended limits is at the risk of the user. For some devices it will lead to complete functional failure, while for other devices it may result in either pulse widths different from those values predicted by design charts or equations, or with m ...
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file (2.5 MB, doc)

... zero. Hence it is first converted in to a complete incidence matrix by adding the deleted row. The elements of each column of the new row is filled using the fact that sum of each column of a complete incidence matrix is zero. In the given matrix in first, third, fifth and the seventh column the sum ...
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... Gp/ω at the maximum is Ct/2. Thus, equivalent parallel conductance, divided by angular frequency gives Ct and τ directly from the measured conductance. The trap density is obtained by using the relation Dt = Ct/qA, where A is the diode area. By using the extracted value Ct in Gp/ω relation, CD can b ...
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... applications. Current-to-voltage converters are often used in current-mode circuits and optical sensors. The variation of a current signal can be over a wide range as it is not directly limited by the supply voltage VDD. If a current-to-voltage converter is involved in a current-mode circuit, the d ...
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... halves, with the iron core transformer operating at 60 Hz and the circuit to the right of the gap operating at a frequency (or frequencies) determined by C1, L1, L2 , and C2 . It should be noted that the output voltage of the iron core transformer drops to (approximately) zero while the input voltag ...
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... the feedback control and is proportional to the output load. This signal is compared to an internal reference (1.24 V); if the load decreases and the voltage on the STBY pin goes lower than the reference, the IC enters an idle state and its quiescent current is reduced. Once the voltage exceeds the ...
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... AT 121 – Ohms Law – Chapter 4 – Part 3 - 2008 Name :__________________________________ Date: ___________________________________ After completing this lab you will be able to: Explain the Relationship between voltage, current, and resistance Determine current flow, resistance, and voltage in a circu ...
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... filter. I. INTRODUCTION When ac and dc lines are in close proximity or on the same right of way, voltage and current can be induced on either ac or dc lines for both steady and transient conditions. The phenomenon is generally referred as ac/dc coupling and it has been investigated and discussed by ...
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... regardless of the direction of the data. The triggering mechanism for these accelerators is both level and edge sensitive. To prevent false triggering of the rise-time accelerators, and to take full advantage of them, signal rise/fall times of less than 2ns/V are recommended for both sides of the de ...
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... - DC, 0.5Hz to 100kHz broad bandwidth capability The WT300 series provides reliable current integration (Ah) and Energy (Wh) measurement for up to 10,000 hours (approx. 1 year). The D/A option is used to save and monitor the measurement results (WT310/WT310HC: 4ch, WT332/WT333: 12ch). An external re ...
wt300 series digital power meter
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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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