PULSE WIDTH RESTRICTION CIRCUIT FOR PWM SIGNAL

PROBLEM TO BE SOLVED: To provide a pulse width restriction circuit of a PWM signal which can prevent a signal having an extremely small pulse width from being impressed for input to a driver or the like, and can easily generate two PWM signals having different on/off timings. SOLUTION: It is charact...

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Bibliographische Detailangaben
Hauptverfasser:	TSUBOUCHI KOSUKE, KINOSHITA OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS PULSE TECHNIQUE REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a pulse width restriction circuit of a PWM signal which can prevent a signal having an extremely small pulse width from being impressed for input to a driver or the like, and can easily generate two PWM signals having different on/off timings. SOLUTION: It is characterized in that time constant circuits 12, 13 which generate from a first signal SG11 inputted as a PWM signal, a second signal SG12 having more moderate gradient in a rise and fall than that of the SG11; and a gate circuit 14 which has a hysteresis property in a threshold value to discriminate input signal levels, and outputs a third signal SG13 delayed of the second signal SG 12 outputted from the constant number circuit; are provided. COPYRIGHT: (C)2003,JPO