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International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.2, pp. 1787-1791
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.2, pp. 1787-1791

... The most common, only acceptable operating regime employed in practical power supplies is the fundamental operating regime, which demonstrates the stable and periodic nature of the system. With Iref=4A and Iref=5A, it was observed that the system enters in to period doubling operation without TDFC. ...
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Maxim MAX471 Current-Sense Amplifier

... The current at OUT indicates magnitude. The SIGN output indicates the current’s direction. Operation of the SIGN comparator is straightforward. When Q1 (Figures 1 and 2) conducts, the output of A1 is high while A2’s output is zero. Under this condition, a high SIGN output indicates positive current ...
Chapter 30
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... Answer: There is 8 times as much magnetic field energy in the large solenoid as in the small solenoid. The B-field is the same in both solenoids (same n = turns/length so same B =µo n I) so both solenoids contain the same energy per volume u = U/vol = B2/(2µo). The larger solenoid has 8 times the vo ...
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... An electron and a proton moving with same speed enter the same magnetic field region at right angles to the direction of the field. For which of the two particles will the radius of the circular path be smaller? ...
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... where V is the voltage amplitude. If V , R, C, and L are fixed and the frequency of the AC generator is variable, we can change the reactances of the inductor and capacitor by changing the frequency of the generator. As the frequency of the generator changes, so does the impedance Z of the circuit a ...
Superconducting point contacts weakly connecting two
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... First, the properties of a single superconducting point contact will be discussed. Special attention will be paid to the resistive superconductive region, and its current-voltage characteristic. The point contact will be treated using a two-fluid model in which the total current is the sum of an ide ...
Ohm`s Law and Resistance
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... electricity if too much demand is placed on that system. The purpose is to protect the component parts from damage from overloading. If too many electrons pass through the wiring inside the wall, or through a jumper, the wire will overheat just like the filament inside a light bulb. However, the fil ...
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... the switching operation of load tap changers (LTC). Existing methods and techniques for dynamic measurements on load tap-changers are based on measuring current and/or voltage on the primary side of the transformer and short-circuiting the secondary side to minimize the inductance in the circuit. St ...
Direct Current (DC) Circuits 1
Direct Current (DC) Circuits 1

... In this part of the lab you will put known values of resistance into the circuit and use this equation to calculate R. You will use this circuit to measure individual resistors as well as series and parallel combinations of resistors. PHYS 0212 DC Circuits 1 ...
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Driving LEDs with a PIC Microcontroller

... The multiplexer can be digitally controlled by the microcontroller. Each LED is assigned an address which allows it to be selected by the PIC, in order to determine the current passing through the diode for current regulation or to assist in failure recognition. ...
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DC Fundamentals, 6-3

... a. Yes. If the resistance is held constant, a 50% applied voltage reduction decreases the circuit current by a like amount. b. Yes, provided that the circuit resistance is decreased by a like amount. c. Yes, provided that the circuit resistance is increased by a like amount. ...
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... combinations for each of the power sources at a time. • Thus, this theorem is useless for analyzing an unbalanced bridge circuit), and it only works where the underlying equations are linear (no mathematical powers or roots). • The requisite of linearity means that Superposition Theorem is only appl ...
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... Rectifier circuits are used to convert an ac voltage into a dc voltage. The current always flows in the same direction through the load resistor of a rectifier circuit. However, its magnitude changes: ...
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... The BCR205W is an easy to use LED Controller requiring a minimum supply voltage that is only 0.2 V higher than the forward voltage of the LEDs. This enables the possibility to connect the maximum amount of LEDs in series with available supply voltage. The LED current is supplied via an external tran ...
Design of a high performance CMOS charge pump for phase
Design of a high performance CMOS charge pump for phase

... directly, causing the phase error to worsen. According to research, this interference is proportional to the value WLC OX , where W and L are the width and length of the MOSFET, respectively. Therefore, a smaller sized MOS switch is recommended in order to reduce the effects of clock feedthrough and ...
IGC70T120T8RQ High Speed IGBT in Trench and Fieldstop Technology
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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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