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汉王PDF转换RTF文档
汉王PDF转换RTF文档

... flowing through external source impedances (Figures 1a and 1b). The combination of high source impedance plus input capacitance (amplifier input capacitance plus stray capacitance) creates a parasitic pole that produces an underdamped signal response. Reducing input capacitance or placing a small ca ...
lm4880.pdf
lm4880.pdf

... not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters ...
Transistors.
Transistors.

AD9762 Data Sheet
AD9762 Data Sheet

Aalborg Universitet Wang, Xiongfei; Blaabjerg, Frede; Loh, Poh Chiang; Pang, Ying
Aalborg Universitet Wang, Xiongfei; Blaabjerg, Frede; Loh, Poh Chiang; Pang, Ying

CIRCUIT #1, To measure generator open circuit voltage:
CIRCUIT #1, To measure generator open circuit voltage:

... The resistor RL can be chosen so as to consume maximum power from the generator. As indicated in the text, maximum power is transferred to RL when RL = Req. To accomplish this the test box contains a variable load resistor. The load resistor, RL, must be adjusted until it equals Req. This is done b ...
FEATURES DESCRIPTION D
FEATURES DESCRIPTION D

... The level shift function is particularly useful when the output of the OPA360 is DC-coupled to the video load. However, it is also helpful when sag correction is employed. The offset helps to shift the video signal closer to the positive rail, so that with even a small 33µF coupling capacitor, the o ...
Switching Regulator Fundamentals (Rev. A)
Switching Regulator Fundamentals (Rev. A)

PowerPoint Presentation - Interfacing Methods and Circuits
PowerPoint Presentation - Interfacing Methods and Circuits

AN11045 Next generation of NXP low VCEsat transistors
AN11045 Next generation of NXP low VCEsat transistors

... small compared to a conventional BJT. The control losses for the load path are equal to IC(T2)  VI. In many applications where MOSFETs have been used, the BISS-transistor-based solution can be considered. ...
HGTG10N120BND 35A, 1200V, NPT Series N
HGTG10N120BND 35A, 1200V, NPT Series N

... Operating frequency information for a typical device (Figure 3) is presented as a guide for estimating device performance for a specific application. Other typical frequency vs collector current (ICE) plots are possible using the information shown for a typical unit in Figures 5, 6, 7, 8, 9 and 11. ...
Problem B - Geneva Area City Schools
Problem B - Geneva Area City Schools

BD63860EFV
BD63860EFV

... temperature rises above 175°C (typ.), the motor output is forced open. When the temperature returns to 150°C or less (typ.), the IC automatically resumes normal operation. However, even if TSD has engaged, the IC may become damaged if heat continues to be absorbed from an external source. ○ Over-cur ...
TPS40020 数据资料 dataSheet 下载
TPS40020 数据资料 dataSheet 下载

... 690 mV. Using a top side N-channel MOSFET for the primary buck switch results in lower switch resistance for a given gate charge. The device controls the delays from main switch off to rectifier turn on and from rectifier turn off to main switch turn on in a way that minimizes diode losses (both con ...
Capacitor Self
Capacitor Self

... The constant voltage (CV) and constant current (CC) controls on the DC power supply were investigated. By adjusting the CC control, the current available from the DC power supply is adjusted. A 1 k 1/4 Watt carbon resistor was examined in terms of its color code (nominal value and tolerance) and me ...
Precision, 200-μA Supply Current, 3-V to 36
Precision, 200-μA Supply Current, 3-V to 36

IQ2616601665
IQ2616601665

Varistors MLA Automotive Datasheet
Varistors MLA Automotive Datasheet

... specified in IEC 61000-4-2 or other standards used for Electromagnetic Compliance (EMC). The MLA Automotive Series is typically applied to protect integrated circuits and other components at the circuit board level. The wide operating voltage and energy range make the MLA Automotive Series suitable ...
3: Electrical Measurements Review
3: Electrical Measurements Review

... A voltmeter measures the potential difference across or between the two selected points. A good voltmeter is designed to draw only a small current so it must be equivalent to a large resistance. Modern DDMs typically have input impedances greater than 1 MΩ. Voltmeters with even larger resistance (TΩ ...
full text pdf
full text pdf

... In the flyback converter, it is necessary to provide a good magnetic coupling between the primary and secondary windings. Failure to meet this requirement results in voltage spikes on the transistor, the elimination of which with the use of additional snubber circuit requires dissipation of the ener ...
Methods of Analysis
Methods of Analysis

... Nodal Analysis • Circuit variables = node voltages • Steps to determine node voltages – Select a reference node, assign voltages v1, v2,…, vn-1 for the remaining n-1 nodes – Use Ohm’s law to express currents of resistors – Apply KCL to each of the n-1 nodes – Solve the resulting equations ...
ADA4922-1 数据手册DataSheet 下载
ADA4922-1 数据手册DataSheet 下载

... power is the voltage between the supply pins (VS) times the quiescent current (IS). The power dissipated due to the load drive depends upon the particular application. For each output, the power due to load drive is calculated by multiplying the load current by the associated voltage drop across the ...
DC and AC Load Line
DC and AC Load Line

MEMS inertial sensor: 2-axis - +/
MEMS inertial sensor: 2-axis - +/

uncorrected page proofs
uncorrected page proofs

< 1 ... 350 351 352 353 354 355 356 357 358 ... 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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