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Basic Circuits
Basic Circuits

... through each circuit component (lamps, carbon resistors, etc.). In a parallel circuit there are two (or more) paths for the flow of charge. When the current reaches the branch in the circuit, it splits. Some current travels through one branch and the remaining travels through the other branch. An am ...
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... • Suppose there is +10 mV (with respect to ground) on one input of a differential amplifier and –10 mV (with respect to ground) on the other input. Then the differential signal is 20 mV. If the diff amp has a gain of 10, the output will be 10  20 mV = 200 mV. • Now suppose that +100 mV (with respec ...
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Wide-temperature-range, high-stability TCXO for optical

Arrangement for Connecting Plural Self
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FAN6862R / FAN6862L Highly Integrated Green-Mode PWM Controller
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... The ADN8810 uses a serial peripheral interface (SPI) with three input signals: SDI, CLK, and CS. Figure 2 shows the timing diagram for these signals. Data applied to the SDI pin is clocked into the input shift register on the rising edge of CLK. After all 16 bits of the dataword have been clocked in ...
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... external RC timing network to set the desired full-scale frequency and a selectable pull-up resistor for the open collector output stage. Any full-scale input voltage range from 100 mV to 10 volts (or greater, depending on +VS) can be accommodated by proper selection of timing resistor. The full-sca ...
< 1 ... 1962 1963 1964 1965 1966 1967 1968 1969 1970 ... 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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