Adjustable PWM signal generating circuit and electric welding machine

The utility model discloses an adjustable PWM signal generating circuit and an electric welding machine, which comprises a first waveform modulation module, a second waveform modulation module and a PWM modulation module, the first waveform modulation module can output a first square wave signal and...

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Bibliographische Detailangaben
Hauptverfasser:	WANG RUBEN, ZHANG XIAODONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PULSE TECHNIQUE SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The utility model discloses an adjustable PWM signal generating circuit and an electric welding machine, which comprises a first waveform modulation module, a second waveform modulation module and a PWM modulation module, the first waveform modulation module can output a first square wave signal and is provided with a first modulation part, and the second waveform modulation module is provided with a second modulation part; a first property type of a first square wave signal can be modulated through the first modulation part, the second waveform modulation module can output a second square wave signal, the second waveform modulation module is connected with the first waveform modulation module to enable the second square wave signal and the first square wave signal to have the same period, and the second waveform modulation module is provided with a second modulation part. The second property of the second square wave signal can be modulated through the second modulation part, the PWM modulation module is con