LED light modulation circuit

• Main Author: WANG XIAODONG
• Format: Patent
• Language: Chinese; English
• Published: 10.12.2014
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model relates to the driving circuit technical field, and especially relates to an LED light modulation circuit comprising a power transformer connected with a 220VAC power supply; an output end of the power transformer is connected with an input end of a bridge rectifier; an output end of the bridge rectifier is connected with an input end of a reference voltage circuit; an output end of the reference voltage circuit is connected with a non inverting input end of a trigger circuit; an inverting input end of the trigger circuit is connected with a sampling circuit; and output end of the trigger circuit is connected with an input end of a reference potentiometer adjusting circuit; an output end of the reference potentiometer adjusting circuit is connected with a driving triode and a power triode; the driving triode and the power triode drive and are connected with an LED assembly; the reference voltage circuit is formed by an operational circuit and a voltage-stablizer, is energy saving, reliable,