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1 - A1.net

... 5 What is the maximum length of a cable segment using 10BASE-T? ...
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... that the e.m.f per cell is raised from 1.8 to 2.2V. Determine the maximum number of carbon lamps of a parallel bank, which may be switched on in series with the circuit, so that the current from the 200V mains does not exceed 10A at the commencement of charging. If the circuit remains unaltered, cal ...
BAŞKENT UNIVERSITY
BAŞKENT UNIVERSITY

... In the event of a short-circuits, i. E. U = 0, the total voltage thus already drops across the internal resistance. Variable Resistor (Potentiometer) A 3 pinned variable resistor is like next figures, made of a carbon strip and a slipping pin. So if you have an “A” ohm variable resitor you have two ...
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Video Transcript - Rose

... The magnitude is 19.5 and the phase angle is 22.6°. The open circuit voltage is the Thévenin equivalent voltage. Now we need to find the impedance ZTH. The circuit has only independent power supplies. We can turn off the power supplies then find the equivalent impedance ZTH. To turn off the current ...
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TEP 4.1.05 -00 Kirchhoff`s laws TEP 4.1.05

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TEP 4.1.05 -00 Kirchhoff`s laws TEP 4.1.05

... Before switching on the power supply, make sure that both adjustments of current and voltage are tuned down to zero. After switching on the power supply first tune the current until the green LED goes out. Then carefully tune up the voltage to a maximum of 3 V. Measure the current in the unbranched ...
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MUR480EG, MUR4100EG - SWITCHMODE Power Rectifier

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...  While the op-amp output should be 0 V  when the input is 0 V (or equal), In actual operation there is sometimes some voltage present at the output. This voltage is known as offset voltage. The manufacturer specifies an input offset voltage for the op-amp. ...
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... The behavior of materials with different vapor melting points is shown in the attached diagram which highlights the arcing characteristics and how the voltage transient is generated and calculated. However, the higher vapor melting point material which is used for long life and in the case of a circ ...
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... D. None of these Effective values of alternating current and voltage are the ones ordinarily referred to when speaking of alternating quantities. Alternating voltages and currents are constantly changing in value, within a certain range, from instant to instant even if the load is constant. It is no ...
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... In the standard implementation, the input voltage, Vin, is applied to the VIN pin of the integrated circuit (IC) and to the inductor. The IC turns on its internal MOSFET, Q1, and current starts to flow from Vin through L1, the SW pin of the IC, Q1, and an internal sense resistor. The control portion ...
Electricity Continued SHORT versionR2014
Electricity Continued SHORT versionR2014

< 1 ... 855 856 857 858 859 860 861 862 863 ... 984 >

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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