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Mini Tutorial MT-212
Mini Tutorial MT-212

... is referenced to the same reference voltage the input may be dc coupled. Care should be taken if gain is taken in the circuit. The frequency response requirements on the op amp are determined by the maximum signal input frequency. There must be enough open-loop gain for the diodes to be biased. Thus ...
Impedance and Ohm`s Law
Impedance and Ohm`s Law

... and currents in a circuit when impedance or admittance are used.  A resistor’s voltage and current are in phase.  Voltage leads current through an inductor by 90o.  Current leads voltage through a capacitor by 90o. ...
07LAB5_rev - University of Guelph Physics
07LAB5_rev - University of Guelph Physics

AD8022 Dual High Speed, Low Noise Op Amp Data
AD8022 Dual High Speed, Low Noise Op Amp Data

... The AD8022 consists of two low noise, high speed, voltage feedback amplifiers. Each amplifier consumes only 4.0 mA of quiescent current, yet has only 2.5 nV/√Hz of voltage noise. These dual amplifiers provide wideband, low distortion performance, with high output current optimized for stability when ...
Technology 奇 力 科 技 preliminary VAS1220 15A Synchronous
Technology 奇 力 科 技 preliminary VAS1220 15A Synchronous

Experiment No 2: BJT Characteristics Theory
Experiment No 2: BJT Characteristics Theory

... in Active region. Reverse Active mode is rarely used (it is used as input stage in TTL gates in digital circuits). The transistor can be considered as a two port network. Three configurations are possible depending upon which terminal acts as input port, output port, and the common terminal. They ar ...
Ham Radio Kit Building Class
Ham Radio Kit Building Class

... This is Kirchhoff’s Voltage Law: the voltage added to the circuit by the battery is equal to the sum of the voltages consumed by the resistors. Here, some of the voltage from the battery is lost in each of the two resistors, and the sum of the voltage lost in the resistors is equal to the voltage of ...
Topology Selection: Input
Topology Selection: Input

... Output Swing: Sweep input from -0.2 to 1.4 and see where output saturates ...
Designing A Very High Output Resistance Current Source
Designing A Very High Output Resistance Current Source

... by the ‘6-pack’ current mirror the output impedance fell dramatically being limited by the output resistance of the current sink supplying I1. Accordingly, and purely in the spirit of scientific enquiry, the circuit of Fig 10, was developed. It contains four lettered sub-circuits. Two of these, A an ...
Notes
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Siemens 6ES7332-5HD01-0AB0 Datasheet
Siemens 6ES7332-5HD01-0AB0 Datasheet

... Short-circuit current ...
07LAB5 - University of Guelph Physics
07LAB5 - University of Guelph Physics

... circuits. It is natural to ask if the two circuit types could be combined to perform subtraction or to find the difference between two voltages. A method of obtaining the difference between two voltages using one amplifier uses the circuit illustrated in Fig 5.1. ...
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Feb 2001 New UltraFast Comparators: Rail-to-Rail Inputs and 2.4V Operation Allow Use on Low Supplies
Feb 2001 New UltraFast Comparators: Rail-to-Rail Inputs and 2.4V Operation Allow Use on Low Supplies

LM1558/LM1458 Dual Operational Amplifier
LM1558/LM1458 Dual Operational Amplifier

... bias network and power supply leads. Otherwise, their operation is completely independent. The LM1458 is identical to the LM1558 except that the LM1458 has its specifications guaranteed over the temperature range from 0§ C to a 70§ C instead of b55§ C to a 125§ C. ...
LP2980-ADJ Micropower SOT, 50 mA Ultra Low
LP2980-ADJ Micropower SOT, 50 mA Ultra Low

... Note 5: The output PNP structure contains a diode between the VIN and VOUT terminals that is normally reverse-biased. Reversing the polarity from VIN to VOUT will turn on this diode (see Application Hints). Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature rang ...
Document
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Electronics Letters
Electronics Letters

DM74LS14 Hex Inverter with Schmitt Trigger Inputs
DM74LS14 Hex Inverter with Schmitt Trigger Inputs

74LS02
74LS02

... 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N14A ...
78ET-2
78ET-2

... Compare methods of obtaining speed regulation of three-phase induction motors generally used in tankers by means of : (1) rotor resistance, (2) cascade system, and (3) pole-changing. Give examples where each system may be employed with advantage. Describe one type of single-phase capacitor motor and ...
class c amplifiers
class c amplifiers

... off with the negative VBB supply. The ac source voltage has a peak value that is slightly greater than VBB + VBE so that the base voltage exceeds the barrier potential of the base-emitter junction for a short time near the positive peak of each cycle as illustrated in Figure 2(b). During this short ...
LM150/250 LM350
LM150/250 LM350

Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits
Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits

Unit 7: MOSFET-Output Motor Controller
Unit 7: MOSFET-Output Motor Controller

... higher currents, where the lower gate resistance losses would more than outweigh the higher switching losses. The TPCA8016 would allow operation at higher voltages (up to 40 or 50 volts?), but with lower currents due to the higher “on” resistance. Gate driver circuit: Standard logic circuits don’t w ...
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Wilson current mirror



A Wilson current mirror is a three-terminal circuit (Fig. 1) that accepts an input current at the input terminal and provides a ""mirrored"" current source or sink output at the output terminal. The mirrored current is a precise copy of the input current. It may be used as a Wilson current source by applying a constant bias current to the input branch as in Fig. 2. The circuit is named after George R. Wilson, an integrated circuit design engineer who worked for Tektronix. Wilson devised this configuration in 1967 when he and Barrie Gilbert challenged each other to find an improved current mirror overnight that would use only three transistors. Wilson won the challenge.
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