What is the difference between a switching and linear power supply
●Linear DC regulated power supplies ("linear supplies") alter the output voltage to the required value through the power frequency (50/60 Hz alternating current) voltage transformer. After being lowered (or raised) to the appropriate AC voltage value, the waveform is rectified, filtered, and stabilized by a voltage regulation circuit, and is then output as a regulated direct current (DC). These types of power supplies have a common characteristic; the voltage transformer works in the linear range. The noise on the input is not amplified on the output. This makes for a quiet and stable output. But, there are drawbacks. The large static loss of the regulating element requires a large heat sink to cool the device and the physical size of a transformer that works in the power line frequencies (50/60 Hz) is large and heavy.
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Technical Documentation |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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October 24, 2017 |
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70 KB |
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