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TPS40057-Q1 数据资料 dataSheet 下载
TPS40057-Q1 数据资料 dataSheet 下载

Electrical Safety in the O.R.
Electrical Safety in the O.R.

... This is incorrect whenever current is flowing through the ground wire. Unless the ground wire is a superconductor (not possible at room temperature) there will be voltage difference between the chassis and ground whenever current is flowing through the ground wire. Let’s assume the neutral wire conn ...
TPS6211x 17-V, 1.5-A, Synchronous Step
TPS6211x 17-V, 1.5-A, Synchronous Step

... rectification is used to increase efficiency and to reduce external component count. To achieve highest efficiency over a wide load-current range, the converter enters a power-saving, pulse frequency modulation (PFM) mode at light load currents. Operating frequency is typically 1 MHz, allowing the u ...
Step Response
Step Response

... solution to move a certain portion of its way between its initial value and its final value. The solution moves exponentially towards its final value. For example, after five time constants (5t) the current has moved to within 1% of its final value. This defines what we mean by “a long time”. A circ ...
Impedance Estimation of Photovoltaic Modules for Inverter Start
Impedance Estimation of Photovoltaic Modules for Inverter Start

... where, τF corresponds to a time when the oscillations have died down. Voltage build-up on Cinv can be written as Isc × t vcinv ∼ ...
Testing Ethernet Ports including Power Over Ethernet (802.3at and
Testing Ethernet Ports including Power Over Ethernet (802.3at and

... Ethernet ports without overvoltage protection Ethernet port basic insulation level Ethernet ports designed to be compliant to criteria “a” (1500 Vrms) will withstand a longitudinal impulse of 2.1 kV. Criteria “c” (2.4 kV) ports will withstand a longitudinal impulse of 2.4 kV, Annex C. Current multi- ...
EMG2016 - Faculty of Engineering
EMG2016 - Faculty of Engineering

... This in turn causes a small dip in the power in the down-stream of the waveguide system. In this condition, the cavity is said to be in resonance with the signal frequency. The resonant frequency can be calculated by solving Maxwell’s equations with the dimensions of the cavity defining the boundary ...
Optocoupler
Optocoupler

WT 1600 Total Solution Numerical, Waveform, and Trend Displays
WT 1600 Total Solution Numerical, Waveform, and Trend Displays

... Current rms, mean, AC-----Accuracy figures are specified with line filter turned ON for 2 mA or less on a 5 A input element, for 200 mA or less on a 50 A input element, for 10/(scaling value ) A or less on a external input. Add (0.006 × I2)% at 5 A input element. Add (0.00006 × I2)% at 50 A input el ...
4 Series Circuits
4 Series Circuits

Guide for Electric Service and Meter Installations
Guide for Electric Service and Meter Installations

AC Circuits - Part I
AC Circuits - Part I

Peak holder employing field
Peak holder employing field

... transistor 26, the required back-bias is developed rapidly. The high input impedance of ?eld eifect transistor 48 will result in keeping the peak from decaying for long periods of time. As an example, a peak value has been held for as long as 15 minutes with less than a 1 percent loss. ...
Intro to Arduino Zero to Prototyping in a Flash!
Intro to Arduino Zero to Prototyping in a Flash!

... This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License. ...
TPS62000 数据资料 dataSheet 下载
TPS62000 数据资料 dataSheet 下载

... The TPS6200x is a step down converter operating in a current mode PFM/PWM scheme with a typical switching frequency of 750 kHz. At moderate to heavy loads, the converter operates in the pulse width modulation (PWM) and at light loads the converter enters a power save mode (pulse frequency modulation ...
LM1084 5A Low Dropout Positive Regulators (Rev. G)
LM1084 5A Low Dropout Positive Regulators (Rev. G)

... Stability consideration primarily concerns the phase response of the feedback loop. In order for stable operation, the loop must maintain negative feedback. The LM1084 requires a certain amount series resistance with capacitive loads. This series resistance introduces a zero within the loop to incre ...
MC74HC4316A - Quad Analog Switch/Multiplexer/Demultiplexer
MC74HC4316A - Quad Analog Switch/Multiplexer/Demultiplexer

... achieve fast propagation delays, low ON resistances, and low OFF−channel leakage current. This bilateral switch/multiplexer/ demultiplexer controls analog and digital voltages that may vary across the full analog power−supply range (from VCC to VEE). The HC4316A is similar in function to the metal−g ...
Step Response
Step Response

... solution to move a certain portion of its way between its initial value and its final value. The solution moves exponentially towards its final value. For example, after five time constants (5t) the current has moved to within 1% of its final value. This defines what we mean by “a long time”. A circ ...
LM1084 - Texas Instruments
LM1084 - Texas Instruments

... Stability consideration primarily concerns the phase response of the feedback loop. In order for stable operation, the loop must maintain negative feedback. The LM1084 requires a certain amount series resistance with capacitive loads. This series resistance introduces a zero within the loop to incre ...
Circuit Theoretic Classification of Parallel Connected
Circuit Theoretic Classification of Parallel Connected

... B. Equivalent Circuits for DC–DC Power Converters DC–DC converters are devices for processing power. For most practical purposes, a regulated output voltage or current is required of a converter, mandating the use of some feedback control to keep the converter unaffected by load and input disturbanc ...
How the DSP5 Switch Works Grounding Issues Battery MUST Be
How the DSP5 Switch Works Grounding Issues Battery MUST Be

Sergé`s famous letter
Sergé`s famous letter

Installation and Operating Instructions
Installation and Operating Instructions

... Although the battery charger is designed to operate with a battery, it can be connected to loads such as dc-to-dc power supplies or inverters. Ripple content is designed to be below 200 mVac rms, without the battery connected, on resistive load. The battery charger is designed to connect to a high c ...
Electric Current, Resistance, and Semiconductors
Electric Current, Resistance, and Semiconductors

... Electric Current, Resistance, and Semiconductors • Transistors can also be made with the opposite sequence of semiconductors, resulting in a pnp transistor. • The basic function of a transistor is to act as an electronic switch that controls the flow of current in a circuit. • Consider the schemati ...
A3952 - Allegro Microsystems
A3952 - Allegro Microsystems

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Multimeter



A multimeter or a multitester, also known as a VOM (Volt-Ohm meter or Volt-Ohm-milliammeter ), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common but analog multimeters are still preferable in some cases, for example when monitoring a rapidly varying value. A multimeter can be a hand-held device useful for basic fault finding and field service work, or a bench instrument which can measure to a very high degree of accuracy. They can be used to troubleshoot electrical problems in a wide array of industrial and household devices such as electronic equipment, motor controls, domestic appliances, power supplies, and wiring systems.Multimeters are available in a wide range of features and prices. Cheap multimeters can cost less than US$10, while laboratory-grade models with certified calibration can cost more than US$5,000.
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