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Current and Resistance
Current and Resistance

C. a pn junction. - E
C. a pn junction. - E

Superposition Examples
Superposition Examples

... This example illustrates the use of superposition in solving for the dc bias currents in a BJT. The object is to solve for the collector current IC in the circuit of Fig. 9. Although no explicit dependent sources are shown, the three BJT currents are related by IC = βIB = αIE , where β is the curren ...
IR3M92N4
IR3M92N4

... Fig. 20 shows circuit diagram of non-insulated step up mode with transformer. Snubber circuit is not necessary and there is no loss of Lp leakage inductance in this mode compared to in flyback method. ※A step-up system is unidentified. ...
High PSR Low Drop-out Voltage Regulator (LDO)
High PSR Low Drop-out Voltage Regulator (LDO)

... and ro−pass are the transconductance and output resistance respectively of pass element and β is the result of voltage divider feedback network. As discussed previously in section II-B the performance of the error amplifier is directly correlated with the PSSR of the LDO system. The intuitive mode a ...
Current transformer selection guide
Current transformer selection guide

Circuits Note Packet - Hicksville Public Schools / Homepage
Circuits Note Packet - Hicksville Public Schools / Homepage

... Believe it or not, Thomas Edison did not invent the light bulb. When electric potential (voltage) is applied to a circuit, and there is resistance in the circuit, where does that potential energy go? What do we call that? Scientists noticed that with more resistance, wires would heat up more. So the ...
DC Motor Drives
DC Motor Drives

PDF Datasheet
PDF Datasheet

... An input bypass capacitor is recommended. A 0.1 μF disc or 1 μF solid tantalum on the input is suitable input bypassing for almost all applications. The device is more sensitive to the absence of input bypassiing when adjustment or output capacitors are used but the above values will eliminate the p ...
AD8428 数据手册DataSheet 下载
AD8428 数据手册DataSheet 下载

... The AD8428 is one of the fastest instrumentation amplifiers available. The circuit architecture is designed for high bandwidth at high gain. The AD8428 uses a current feedback topology for the initial preamplifier gain stage of 200, followed by a difference amplifier stage of 10. This architecture r ...
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3: Electrical Measurements Review

TIP145 / TIP146 / TIP147 PNP Epitaxial Silicon Darlington Transistor Features
TIP145 / TIP146 / TIP147 PNP Epitaxial Silicon Darlington Transistor Features

... Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support. Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor ...
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Resuscitation Will medical examination gloves protect rescuers from

TIP140T / TIP141T / TIP142T NPN Epitaxial Silicon Darlington Transistor T IP
TIP140T / TIP141T / TIP142T NPN Epitaxial Silicon Darlington Transistor T IP

... Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support. Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor ...
E701 ELECTRICAL MACHINES III
E701 ELECTRICAL MACHINES III

... 1. A 3 phase, 4 pole, 50 Hz Induction Motor takes 40A at full load of 1440 rpm, and develops a torque of 100Nm at Full load. The starting current at rated voltage is 200A. What is the starting torque? If a stardelta starter is used, what is the starting torque and starting current? Neglect magnetizi ...
R - Uplift North Hills Prep
R - Uplift North Hills Prep

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Effects of Electric Shock on Man

S280-80-13
S280-80-13

... that apply to this equipment. Additional statements, related to specific tasks and procedures, are located throughout the manual. DANGER: Hazardous voltage. Contact with hazardous voltage will cause death or severe personal injury. Follow all locally approved safety procedures when working around hi ...
SPEED REGULATOR FOR DC MOTORS
SPEED REGULATOR FOR DC MOTORS

... Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by ...
17227 2 - SK Engineering Academy
17227 2 - SK Engineering Academy

... of a power system. The grading is not possible to be achieved in long and thin networks and also it can be noticed that grading of settings may lead to longer tripping times closer to the sources, which are not always desired. These problems have given way to the concept of ‘unit protection’ where t ...
DPBT8105 Features Mechanical Data
DPBT8105 Features Mechanical Data

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
AAT4614 数据资料DataSheet下载
AAT4614 数据资料DataSheet下载

... The AAT4614 operates with input voltages ranging from 2.4V to 5.5V which, along with its extremely low operating current, makes it ideal for battery-powered applications. In cases where the input voltage drops below 2.4V, the AAT4614 MOSFET is protected from entering the saturated region of operatio ...
Dispersive Effects in Microwave AlGaN/AlN/GaN HEMTs With
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TPS40090 数据资料 dataSheet 下载
TPS40090 数据资料 dataSheet 下载

... component. In the event of such failure, the whole load current can be steered with catastrophic consequences into a single channel where the fault has happened. The dedicated circuit in the TPS4009x controller prevents it from starting up if any current sense pin is open or shorted to ground. The c ...
ADM4073 Low Cost, Voltage Output, High-Side, Current
ADM4073 Low Cost, Voltage Output, High-Side, Current

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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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