The switching regulator uses the output stage to repeatedly switch the "on" and "off" states to produce an output voltage along with the energy storage components (capacitors and inductors). Its adjustment is achieved by adjusting the switching timing according to the feedback sample of the output voltage. In a fixed-frequency regulator, the switching timing is adjusted by adjusting the pulse width of the switching voltage, which is the so-called PWM control. In gated oscillators or pulse mode regulators, the width and frequency of the switching pulses remain constant, but the "on" or "off" of the output switch is controlled by feedback.
Depending on the arrangement of the switches and the energy storage components, the resulting output voltage may be greater or less than the input voltage, and a plurality of output voltages may be generated with a regulator. In most cases, the pulse (step-down) switching regulator is more efficient than a linear regulator to convert power at the same input voltage and output voltage requirements. Compensation type --- high precision AC compensation type power supply (single phase 0.5kVA and above, three-phase 1.5kVA and above) with compensation transformer, 110V output.
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