2results about How to "Improve voltage conversion efficiency" patented technology

The utility model relates to a kind of low-power low-cost power supply circuit and conference system host power, comprising: input processing module, input filter module, control module, push-pull drive module, voltage conversion module and voltage output module;The input end of input processing module is connected to external power supply, the input end of input processing module, input filter module, control module and voltage conversion module are connected to the output end, push-pull drive module is connected with the input end of voltage conversion module and the drive end of control module respectively, the input end of voltage conversion module is connected with the output end of voltage output module, and the output end of voltage output module outputs multiple groups of power supply signals.The power supply circuit of the utility model can significantly reduce electromagnetic interference, reduce output ripple, improve power stability and reliability, and can simplify circuit design, voltage conversion efficiency is high, and can meet the design requirements of conference host.

This invention belongs to the field of voltage regulator technology, specifically relating to an automatic tracking DC voltage regulator and its usage method, comprising a switching voltage regulator, a voltage follower circuit, a series voltage regulator, and a load connected in sequence; the output terminal of the switching voltage regulator is connected to the input terminal of the series voltage regulator; the voltage follower circuit includes a first resistor, a second resistor, a third resistor, and a first thyristor; one end of the first capacitor is connected to the output terminal of the switching voltage regulator, and the other end is connected to the emitter of the first thyristor; the collector of the first thyristor is connected to the voltage feedback terminal of the switching voltage regulator; the two ends of the second resistor are respectively connected to the output terminal of the switching voltage regulator and the base of the first thyristor; the two ends of the third resistor are respectively connected to the base of the first thyristor and the output terminal of the series voltage regulator; the two ends of the adjusting potentiometer are respectively connected to the voltage feedback terminal of the series voltage regulator and the output terminal of the series voltage regulator.