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Zener diode voltage regulator File
Zener diode voltage regulator File

... Simple emitter follower series pass regulator The Zener diode will generally need a minimum of around 10mA for a small Zener to keep its regulated voltage. The resistor should then be calculated to provide the base drive current and the minimum Zener current from a knowledge of the unregulated volt ...
SNC 1PW - TeacherWeb
SNC 1PW - TeacherWeb

... Purpose: To determine the relationship between current, voltage and resistance in an electric circuit. Materials: ammeter power supply ...
The first test of a transistor
The first test of a transistor

... multimeter. This option sets the terminals of the multimeter so as to forward bias the junction and then to read the voltage across it. For a silicon transistor like the 2N2219 you expect to find a forward voltage of 0.6 or 0.7 volts. Test both the basecollector and the base-emitter junctions of you ...
TS7000 Datasheet
TS7000 Datasheet

semi-conductors-16
semi-conductors-16

... 12. What is an amplifier? Explain the action of a NPN transistor amplifier in the CE mode. Does an amplifier violate energy conservation? Draw the frequency response curve of (a) practical transistor amplifier and (b) ideal amplifier. Two amplifiers are connected one after the other in series (casca ...
pnp transistor in reverse active mode
pnp transistor in reverse active mode

... linear).  The  emitter-­‐base  is  reverse  biased  and  the  base-­‐collector  is  forward  biased.  This   is  not  very  efficient  because  of  the  doping. Emitter-­‐base  is  reverse  biased=>  minority   carrier  concentration  decays  f ...
Normal Distribution Problems
Normal Distribution Problems

... Normal Distribution Problems A constant or DC current source that outputs 1 amp is connected to a resistor of nominal resistance of 1 ohm. If the resistance value can vary according to R ∼ Normal(1, 0.01), what is the probability that the voltage across the resistor will be between 0.9 and 1.1 volts ...
UHF Power Module  IW2792
UHF Power Module IW2792

... IW2792 is a small UHF power module capable of delivery about 3W within the optimal frequency range from 430 to 500 MHz, it can be also suitable from 400 to 530 MHz with a little output power reduction (it has been tested in our laboratory with 2.4 - 2.5W output power). The power supply is +5V with m ...
University of North Carolina, Charlotte Department of Electrical and Computer Engineering
University of North Carolina, Charlotte Department of Electrical and Computer Engineering

generators - ingles-escrito-uah-08
generators - ingles-escrito-uah-08

SHUNT REGULATOR
SHUNT REGULATOR

... The problem with them is that sometimes the measured values of voltage and current don't agree with the calculated values. It seems like a mystery: does circuit analysis not always work? Of course it does! The problem is likely to be in the power supply you're using. Circuits like the one in Figure ...
universitetet i oslo
universitetet i oslo

... These opamps have a 1 MHz Gain Bandwidth Product (GBW). At what frequency will the total voltage gain in this circuit be reduced by 3 dB? At 10 kHz the signal output from opamp U1 is measured in AA to be 0,5 volt. How large is the signal on the inverting input to this opamp? (- in the connection poi ...
The unijunction transistor
The unijunction transistor

BASIC ELECTRONIC COMPONENTS
BASIC ELECTRONIC COMPONENTS

OpAmp Output Protection (posted 16 June, 2016)
OpAmp Output Protection (posted 16 June, 2016)

Electricity
Electricity

... Dynamic ...
KIRCHOFF`S VOLTAGE LAW: EXAMPLE 1
KIRCHOFF`S VOLTAGE LAW: EXAMPLE 1

... The voltage drops across both resistors were equal even though the currents were different. The voltage  drop is ALWAYS the same across two resistors in parallel.  Notice that IR1 + IR2 = I. This means that current is conserved. We will learn later that this is an application of  Kirchhoff’s Current ...
darlington - UniMAP Portal
darlington - UniMAP Portal

... AMPLIFIER COMPONENTS ...
EUP2644  TFT LCD DC-DC Converter with Integrated LDO, OP-AMP and GPM Switch
EUP2644 TFT LCD DC-DC Converter with Integrated LDO, OP-AMP and GPM Switch

... allowing the use of small inductors and capacitors. The step up converter uses fixed-frequency, current mode control architecture which provides fast load-transient response and easy compensation. A 3.3A peak current limit for the internal switch protects power supply fault condition. The GPM provid ...
ELEC 361 Measurement and Analysis Differential Amplifier
ELEC 361 Measurement and Analysis Differential Amplifier

... 8. Set the resistor values so that this current source produces the same current as the ‘tail’ resistor in the basic circuit. 9. Measure the small-signal impedance of the current source. 10.Replace the ‘tail’ resistor with this current source, measure the new differential gain and common-mode gain. ...
Building a Simple Circuit
Building a Simple Circuit

Reference Directions in Voltage and Current Division
Reference Directions in Voltage and Current Division

... the current measured by the meter, i m . (a) Suppose v s = 15 V . Determine the value of the resistance R that causes the value of the current measured by the ammeter to be i m = 5 A. (b) Suppose v s = 15 V and R = 24 Ω. Determine the value of the current measured by the ammeter. (c) Suppose R = 24 ...
Sheet (3)
Sheet (3)

... 1) The input voltage to the cycloconverter is 120V (rms). 60Hz. The load resistance is 5Ω and the load inductance is L=40mH . The frequency of the output voltage is 20Hz. If the converters are operated as semiconverters such that 0≤α≤π and the delay angle is αp = 2π/3 , Determine : a) The rms value ...
Document
Document

... output conductance and the channel doping. Low channel doping is required to get more inversion layer electrons, but that can lead to large output conductance and punchthrough effect. To prevent the punch-through and the output conductance effect larger channel doping densities are typically used. T ...
Electric Current and Potential Difference
Electric Current and Potential Difference

... Electrical resistance is the opposition to the movement of electrons as they flow through a circuit. An ohmmeter is used to measure the resistance. It is placed in series across a load. A resistor is an electrical device that reduces the current in a circuit. Resistors have may uses. Light weight ca ...
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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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