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polytechnic of kota bharu
polytechnic of kota bharu

... by a single resistance in series with a single voltage source. It is especially useful for simplifying circuits with more than one power source to find the voltage drop across the load. EQUIPMENTS: ...
I need to indicate flow pulse signals (10,000 pulses/hour) at two
I need to indicate flow pulse signals (10,000 pulses/hour) at two

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C 272 Stereo Power Amplifier

... limiting distortion common in lesser designs. This also gives it an unusual characteristic compared to traditional amplifiers when measuring its continuous output power; the RMS output power remains the same at 150 watts with either an eight or a four-ohm load. This is not unusual for NAD however. N ...
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... What is the resistance of a resistor with the color code of Red-Green –Brown? What is the resistance of a resistor with the color code of Orange-Red –Yellow Circuit Symbols Battery This symbol is actually for TWO batteries. The long line is positive and the short line is negative. To connect the two ...
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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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