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CMOS Differential Amplifier with Active Load: CMRR and Mismatch
CMOS Differential Amplifier with Active Load: CMRR and Mismatch

MP-50 Current monitoring probe
MP-50 Current monitoring probe

... conductor within the “sensing” window of the probe and measuring the probe’s output voltage with an RF detector. Calibration of the probe permits the conversion of the voltages measured to current. Current measurements can be made over the frequency range shown in the transfer impedance curve furnis ...
TPS63030-Battery
TPS63030-Battery

... 1 INTRODUCTION When powering a microelectronic circuit from batteries designers must take into account the fact that the battery voltages changes with its state of charge. Lithium Ion batteries typically have a useable voltage range between 4.2V and 3V. Therefore, the output of these batteries canno ...
A LED Exercise
A LED Exercise

... you didn’t, look at the two situations again and see if you can find the answer to this one before you read on. Hopefully you saw that the answer to this question is still 40 mA because in effect we doubled the voltage across the resistor by adding another 4 V to the supply giving us 8 V across it, ...
Thermometry - Texas A&M University
Thermometry - Texas A&M University

... K=Boltzman Constant q=electron charge JE1, JE2 = Emitter current densities ...
diode
diode

2006 VCAA Physics Exam 1 Solutions
2006 VCAA Physics Exam 1 Solutions

... a transistor amplifier. For a correctly biased transistor amplifier only AC signals are fed to the input. To ensure this a capacitor (CIN) acts as a decoupler to filter out the DC component from a signal. Another capacitor (COUT) ensures only amplified AC signals at the output. Capacitor CE filters ...
don`t replace your garage door opener to get rid of
don`t replace your garage door opener to get rid of

Basic Electric Circuits Series Circuits
Basic Electric Circuits Series Circuits

... Basic Electric Circuits Series Circuits ET 150 ...
RPR-220 : Optical Sensors
RPR-220 : Optical Sensors

AKSHAYA COLLEGE OF ENGINEERING AND TECHNOLOGY
AKSHAYA COLLEGE OF ENGINEERING AND TECHNOLOGY

... i. IC = β IB + (1+ β)ICO ii. In the cut-off region: i. IC = (1+ β)ICO ICBO is the collector current when the emitter current is zero. ICBO is ...
Create PDF - HighFinesse
Create PDF - HighFinesse

... The purest source current up to 200 A ...
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Frequency response of feedback amplifiers
Frequency response of feedback amplifiers

... • The frequency of oscillation for the Astable Multivibrator shown before is ...
BDW94CF PNP Epitaxial Silicon Transistor B D
BDW94CF PNP Epitaxial Silicon Transistor B D

... or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. ...
Connect the bipolar junction transistor (BJT) into the circuit shown in
Connect the bipolar junction transistor (BJT) into the circuit shown in

... 4. Calculate the base current I B  1 RB V 5. Calculate the collector current I C  2 RC I 6. Calculate the current gain of the BJT   C IB 7. Is IB greater than or less than IC? 8. Repeat steps 2-7 with VCC set to 15 volts. Compare the two calculated values for β. 9. Now, remove RB and observe the ...
Advanced Computer Architecture
Advanced Computer Architecture

Kirchhoff`s Voltage Law (KVL)
Kirchhoff`s Voltage Law (KVL)

06 Control Methods
06 Control Methods

ElectricalCircuits
ElectricalCircuits

... Rule # 1 means that the voltage across all resistors in parallel must equal the source voltage V  V1  V2  V3 ...
university of california at berkeley - Berkeley Robotics and Intelligent
university of california at berkeley - Berkeley Robotics and Intelligent

... made earlier and adjust if necessary. Set a value for VBAT and run a DC simulation sweeping the temperature from -40C to +85C. Plot VREF. Ideally the output should look parabolic with a slope of zero near 25C. You will likely need to make adjustments. If you need to make adjustments, think about wha ...
EMT3
EMT3

... COLLECTOR TO BASE VOLTAGE : VCB (V) EMITTER TO BASE VOLTAGE : VEB (V) ...
High Voltage Power Supply Using the TPS61040
High Voltage Power Supply Using the TPS61040

Practical 2P12 Semiconductor Devices
Practical 2P12 Semiconductor Devices

... Investigation of the electrical characteristics of a bipolar transistor You are provided with a BU406 power transistor, a prototype board, a power supply, a 1 kΩ resistor, three DMM’s and some lengths of wire. The BU406 is an npn transistor and its circuit symbol is shown in fig. 1. It can be consid ...
Chapter 5
Chapter 5

< 1 ... 919 920 921 922 923 924 925 926 927 ... 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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