Ultra-low-voltage boosting system and control method thereof
A technology of boosting system and control method, which is applied in control/regulating systems, instruments, regulating electrical variables, etc., can solve problems such as unsolved positive and negative bipolar input sources, difficulty in boosting multiples and boosting efficiency, etc. Achieve the effect of improving conversion efficiency, large boost multiple, and reducing switching loss
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[0024] The present invention will be further described below by specific embodiment:
[0025] Such as figure 1 As shown, the ultra-low voltage boost system includes an open-circuit voltage sampling and holding device 102, a polarity detection and control signal generator 103, a primary switching tube 104, a flyback transformer 105, a rectifier bridge 106, an energy storage element 107 and a single-chip microcomputer 108, The open-circuit voltage sampling and holding device 102 is connected with the output source of weak energy or the transducer 101, and the open-circuit voltage sampling and holding device 102 is also connected with the single-chip microcomputer 108, the polarity detection and control signal generator 103 and the flyback transformer 105 in addition. connection, the single-chip microcomputer 108 is used to output the sampling signal SAMP and the holding signal HOLD; the first-stage switching tube 104 is connected with the polarity detection and control signal ge...
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