SWITCHING CONTROL CIRCUITS AND METHOD OF ACTUATING A SWITCH HAVING REDUCED CONDUCTED EMI

SWITCHING CONTROL CIRCUITS AND METHOD OF ACTUATING A SWITCH HAVING REDUCED CONDUCTED EMI

The present disclosure provides a control circuit to power a load, the circuit generally comprising a first switch such as a TRIAC to switch on and off and power the load based upon user demand. The circuit is also comprised of a second connected in parallel with the TRIAC, the second switch switchi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEMIRE, Jimmy, SIMARD, Guillaume, CHAMPAGNE, Maxime
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
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The present disclosure provides a control circuit to power a load, the circuit generally comprising a first switch such as a TRIAC to switch on and off and power the load based upon user demand. The circuit is also comprised of a second connected in parallel with the TRIAC, the second switch switching to a conducting state at a zero-crossing of the source before becoming completely saturated. Once the second switch is saturated, the first switch switches from a non-conducting state to a conducting state, which minimizes conducted EMI generated in the circuit.