Variable-frequency resonance high-voltage adjustable power supply
A frequency conversion resonance and frequency conversion circuit technology, which is applied in electrical components, conversion devices that convert AC power input into AC power output and output power, etc. It can solve the problems of large size, high cost of isolation phase-shifting transformer, and inability to be used as a high-voltage power supply. , to achieve the effect of smooth voltage regulation and no harmonic interference
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[0016] In order to better understand the present invention, the embodiments of the invention will be described in detail below in conjunction with the accompanying drawings.
[0017] The invention provides a frequency conversion resonant high voltage adjustable power supply, the block diagram of the power supply circuit is as follows figure 2 As shown in , it includes a filter circuit 10 , a rectifier circuit 20 , a PWM frequency conversion circuit 30 , an isolated excitation circuit 40 and a resonant modulation circuit 50 . After the three-phase alternating current (commercial power) is input into the above-mentioned variable frequency resonant high voltage adjustable power supply, it is filtered by the filter circuit 10 and converted into direct current by the rectifier circuit 20 in sequence. A set frequency, and finally resonate with the capacitive load test circuit 60 through the resonant modulation circuit 50 to obtain an adjustable high-voltage power supply.
[0018] ...
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