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4.1_Overview_presentation
4.1_Overview_presentation

... reverses polarity at light loads ...
Vout Vdd Vss 50 ohms - + 2 pF 500 ohms 500 ohms
Vout Vdd Vss 50 ohms - + 2 pF 500 ohms 500 ohms

... increasing transistor length. The output resistance parameter 2 will stay the same as before for minimum length transistors (Lmin=0.13µm), but will decrease with increasing L (drawn L, not effective L). Since the output resistance is proportional to 1/ 2, the output resistance increases with increas ...
Evaluate: MAX1973/MAX1974 MAX1973/MAX1974 Evaluation Kit General Description Features
Evaluate: MAX1973/MAX1974 MAX1973/MAX1974 Evaluation Kit General Description Features

... or 1.8V, or can be adjusted from 1.25V to VIN by adding external feedback resistors. The output of the MAX1974 circuit (OUT2) is a selectable preset of 1.5V or 1V, or can be adjusted from 0.75V to VIN by adding external feedback resistors. Each output can deliver 1A. The MAX1973 circuit also feature ...
In contrast to thermocouples, Pt100 resistances (platinum RTDs with a
In contrast to thermocouples, Pt100 resistances (platinum RTDs with a

... In the present design, accurate temperature injection of 1 mA was accomplished using a LT1460-2.5 voltage reference source (Linear Technology) that gave a 2.5 V voltage output from the FAC-6628 ±15 V-1 A dual power supply (Promax) with 0.075 nominal accuracy. This output voltage was coupled to the P ...
MC34268 800 mA, 2.85 V, SCSI−2 Active Terminator, Low
MC34268 800 mA, 2.85 V, SCSI−2 Active Terminator, Low

... Dropout Voltage Regulator The MC34268 is a medium current, low dropout positive voltage regulator specifically designed for use in SCSI−2 active termination circuits. This device offers the circuit designer an economical solution for precision voltage regulation, while keeping power losses to a mini ...
Amplifier IC Generates a Negative Voltage
Amplifier IC Generates a Negative Voltage

... output of a positive precision voltage reference. This approach typically requires a positive reference, the op amp, and two supply rails to generate the negative output. Another approach to generate the negative supply rail uses a charge-pump inverter. This method requires a voltage reference, a ch ...
Review for Exam #1
Review for Exam #1

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Representations of any two different signals

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Experiment 1: Multimeter Measurements on DC Resistive Circuits
Experiment 1: Multimeter Measurements on DC Resistive Circuits

... will have this feature so be careful to estimate the expected current when using other meters. Ammeters have very low resistance that typically is less then 0.5 Ω. A common mistake is to connect When making current measurements, make certain the ammeter is connected in series with the circuit compon ...
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Full-Wave (Bridge) Rectifier

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NTE823 Integrated Circuit Low Voltage Audio

... With Pin1 and Pin8 open the 1.35kΩ resistor sets the gain at 20 (26dB). If a capacitor is put from Pin1 to Pin8, bypassing the 1.35kΩ resistor, the gain will go up to 200 (46dB). If a resistor is placed in series with the capacitor, the gain can be set to any value from 20 to 200. Gain control can a ...
Current and Resistance
Current and Resistance

... Solution: The cross-sectional area is A =  r2 A = 3.1416 (0.5 103 m)2 = 7.85 107 m2 The resistivity of Al is 2.82 10 8  m Resistance per unit length is R/l = /A ...
MCL2 UK - Fil Control
MCL2 UK - Fil Control

... MAIN FUNCTION: To control the linear motion of two textile yarns when assembling. When a yarn breaks or stops, the MCL2 will inform the user (flashing LED) that a position is defective. It can also activate a yarn cutter or stop the position giving a LOW signal to an automate. Any kind of material a ...
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... Operating Region of Transistor • Active region, middle region – normal operation of transistor Emitter diode – FB and Collector diode – RB • Breakdown region – transistor will be destroyed • Saturation region – rising part of curve, VCE between zero and few tenth of volt Collector diode has insuffi ...
MJE802
MJE802

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Phys 345 Electronics for Scientists
Phys 345 Electronics for Scientists

... A R R   vC (t )  e e RC  Be RC dv   vc (t ) so : C C  dt R Boundary condition: at t=0, vC(t)=0 so:   Be 0  B dvC dt t ...
Experiment 15: Ohm`s Law
Experiment 15: Ohm`s Law

... internal resistance so that only a minuscule amount of current can flow through the voltmeter. This keeps the voltmeter from becoming a significant path for current around the element being measured. Resistors are labeled with color-coded bands that indicate resistance and tolerance. The first two c ...
ACS755xCB-150 - Allegro Microsystems
ACS755xCB-150 - Allegro Microsystems

... proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory. ...
figure 10-1
figure 10-1

... when the gate terminal is biased negatively relative to the source terminal. When the voltage at the gate with respect to the source (Vgs) is about –5 Volts, the MOSFET will be “ON” and will conduct between source and drain with Rds of approximately 0.5 Ohms. Most MOSFETS cannot withstand a Vgs volt ...
ACS754SCB-200 - Allegro Microsystems
ACS754SCB-200 - Allegro Microsystems

... IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device. Noise (VNOISE). The product of the linear IC amplifier gain (mV/G) and the noise floor for the Allegro Hall effect linear IC (≈1 G). The no ...
Unit 2
Unit 2

... Series and Parallel Circuits Series Circuit In the diagram, two resistors are connected in a series circuit with a battery. The total resistance (RT) for the whole circuit is very simple. It's just R1 plus R2. Using these two facts, we can work out the voltage across each resistor. Suppose R1 = 1Ω a ...
RB721Q-40 - Digi-Key
RB721Q-40 - Digi-Key

... No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Up ...
Electronics Letters
Electronics Letters

< 1 ... 803 804 805 806 807 808 809 810 811 ... 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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