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Parallel Wiring
Parallel Wiring

... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
Chapter 28 Direct Current Circuits
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... If we now wish to discharge the capacitor we simply turn off the emf device. The resistor will then dissipate the energy stored in the capacitor. The equation for this is: ...
Analysis and Design of Controllable Class E Low dv/dt Synchronous
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... Figure 7 shows the normalized equivalent input resistance Ri/RLmin and the equivalent input reactance Ci/C1 versus Dmin when D is varied from Dmin to 1. After we known Ri and Ci, they will be transferred to the primary side of transformer by factor (N1/N2)2. ...
HMC722LC3C 数据资料DataSheet下载
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... The HMC722LC3C is an AND/NAND/OR/NOR function designed to support data transmission rates of up to 13 Gbps, and clock frequencies as high as 13 GHz. The HMC772LC3C may be easily configured to provide any of the following logic functions: AND, NAND, OR and NOR. The HMC722LC3C also features an output ...
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... uses the modulator input, i.e., the current controller output Uca, and calculates a duty ratio value for the PWM hardware module in TMS320LF2407A. The PWM hardware uses the duty ratio value and generates the appropriate PWM signal for the PFC switch. The software is implemented such that, when the m ...
Chapter 27
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... difference between b and a However, as the charge moves from c to d through the resistor R, it loses this electric potential energy U due to collide with atoms in the resistor R, producing an internal energy. If we neglect the resistance of the connecting ...
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... on’. In this condition the transistor is said to be fully ‘saturated’. General-purpose transistor The BC 639 is common general-purpose transistor. The diagram below shows the position of the legs when viewed from underneath the case. ...
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... manner intended, it is also necessary to keep a safety distance of 80mm (3.14 inch) above and below the device as well as a lateral distance of 25mm (0.98 inch) to other units while the device is in operation. air Depending on the surrounding temperature and output load delivered by the power supply ...
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... -CONTROLSGAIN CONTROL – Adjusts the amount of input signal that is fed to the GERMANIUM OD. The more the knob is rotated the harder the Germanium transistor and drive components are hit. BIAS CONTROL – Adjusts the current gain that is sent to the Germanium transistor. It works together with the volt ...
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... synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host. With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and ...


Slide 1
Slide 1

AD557: 英文产品数据手册下载
AD557: 英文产品数据手册下载

Procedures - Faculty of Engineering
Procedures - Faculty of Engineering

... vbe, ic ,ib and vce are incremental values which are not affected by the DC bias of the transistor. hfe is also known as the small-signal current gain. It is usually the most important parameter for a small-signal transistor amplifier circuit design. It is not the same as the hFE. From the definitio ...
Procedures - Faculty of Engineering
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AD5520 Per Pin Parametric Measurement Unit/Source Measure Unit
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... rating only; functional operation of the device at these or any other conditions 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. ...
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USN 10EE15/25  B. E. Degree First Semester End Examination (SEE), December 2010
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... (C) Braking torque is equal to operating torque (D) Operating torque is constant xix) Short pitched windings in alternators ...
How to Design a Boost Converter With the TPS61170 Application Report ......................................................................................
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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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