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Basic Techniques for Accurate Resistance Measurement
Basic Techniques for Accurate Resistance Measurement

... measurement you save a piece of wire, but this setup assumes that the voltage drop in the two leads is identical—this is often but not always the case. If the voltage drop is uneven, you will encounter errors when using this technique. While most users are usually measuring between the 0 and 100,00 ...
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... Note 1: LED backlight is LED lightbar type(18 pcs of LED). Note 2: Definition of “LED Lifetime”: brightness is decreased to 50% of the initial value. LED Lifetime is restricted under normal condition, ambient temperature = 25℃ and LED lightbar current= 150mA ...
ADS7056 Ultra-Low Power, Ultra-Small Size, 14
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... the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7056 complies with the JESD87A ...
User`s Manual CPS1000E-DE
User`s Manual CPS1000E-DE

... 1. INPUT VOLTAGE Meter: This meter measures the AC voltage that the EPS is receiving from the utility wall outlet. The EPS is designed, through the use of automatic voltage regulation, to continuously supply connected equipment with stable, 220 output voltage. In the event of a complete power loss, ...
Digest template
Digest template

... place in the world connected to Internet. The designed circuit is then physically connected in lab from real components. Some of these components can be controlled (it is possible to set their parameters). Such example can be the voltage source, where the user can specify the desired voltage as need ...
Appendix A Decibels
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comparison of honey comb and bridge link type configuration of
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Most Often Asked Questions About Current and Voltage Transformers

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Voltage and vibration fluctuations in power transformers

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< 1 ... 934 935 936 937 938 939 940 941 942 ... 2646 >

Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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