Wide-dynamic high-accuracy and edge time adjustable impulse wave producing method,Time-delay stable plasma medium-frequency power supply

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2 results about "Pulse wave" patented technology

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A pulse wave or pulse train is a kind of non-sinusoidal waveform that includes square waves (duty cycle of 50%) and similarly periodic but asymmetrical waves (duty cycles other than 50%). It is a term common to synthesizer programming, and is a typical waveform available on many synthesizers. The exact shape of the wave is determined by the duty cycle of the oscillator. In many synthesizers, the duty cycle can be modulated (sometimes called pulse-width modulation) for a more dynamic timbre.

Wide-dynamic high-accuracy and edge time adjustable impulse wave producing method

ActiveCN102723931ASimplify complexityLower slew rateElectric pulse generatorWave shapePulse wave

The invention discloses a wide-dynamic high-accuracy and edge time adjustable impulse wave producing method which is characterized by including the following steps: (1) arranging an impulse generator; (2) building an impulse wave model according to waveforms of impulse signals generated by the impulse generator; (3) determining the amplitude modulation position according to the impulse wave model built in the step (2); (4) arranging an amplitude modulator; (5) setting a field programmable gate array (FPGA) waveform processing unit; (6) arranging a state machine and a direct digital frequency synthesizer (DDS) cooperating with the state machine in work; and (7) leading the state machine and the direct digital frequency synthesizer to cooperate in work and leading details of impulse waveforms after fine adjustment to be completely displayed. The wide-dynamic high-accuracy and edge time adjustable impulse wave producing method uses the method of amplitude for time, leads impulse edges and impulse width to be subjected to wide-dynamic and high-accuracy adjustment completely through the digital measures, simplifies complexity of a signal source analog channel circuit, saves cost and reduces production debugging operation difficulty.

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Owner:UNI TREND TECH (CHINA) CO LTD

Time-delay stable plasma medium-frequency power supply

InactiveCN109412426AStable output voltageReduce duty cycleEfficient power electronics conversionElectronic switchingIntermediate frequencyTime delays

The invention discloses a time-delay stable plasma medium-frequency power supply. The time-delay stable plasma medium-frequency power supply comprises a three-phase 18 pulse wave controllable rectifying circuit, a rectifier filter time-delay starting circuit, a filter energy storage circuit, an IGBT drive circuit, an LC series resonant circuit, a medium-frequency transformer, a variable capacitorand an EMC management circuit, wherein the first output end of the three-phase 18 pulse wave controllable rectifying circuit is connected with the input end of the filter energy storage circuit, the second output end of the three-phase 18 pulse wave controllable rectifying circuit is connected with the input end of the rectifier filter time-delay starting circuit, the first output end of the filter energy storage capacitor is connected with the input end of the IGBT drive circuit, the output end of the IGBT drive circuit is connected with the input end of the LC series resonant circuit, and the output end of the LC series resonant circuit is connected with the input end of the medium-frequency transformer; the input end of the EMC management circuit is connected with the output end of a three-phase alternating current power supply serving as a power supply, and the first output end of the EMC management circuit is connected with the input end of the three-phase 18 pulse wave controllable rectifying circuit. According to the time-delay stable plasma medium-frequency power supply, the stability of a time-delay circuit can be improved.

Owner:CHANGSHA QIUDIANBING INFORMATION TECH CO LTD

2 results about "Pulse wave" patented technology

Wide-dynamic high-accuracy and edge time adjustable impulse wave producing method

Time-delay stable plasma medium-frequency power supply

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