Control method and drive circuit of LED illuminating lamp for refrigerators

• Main Authors: WANG YIJI, TAO SHA, LI QIANYING, WEI KUNTING
• Format: Patent
• Language: English
• Published: 30.12.2015
• 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 invention discloses a control method and drive circuit of an LED illuminating lamp for refrigerators, belongs to the field of illuminating devices for refrigerators, and aims to solve the problem that the service life of a conventional LED illuminating lamp for refrigerators is short. The control method of the LED illuminating lamp for refrigerators comprises the step of controlling the working power of an LED lamp set through a pulse signal output by a single chip microcomputer port. The drive circuit of the LED illuminating lamp for refrigerators provided by the invention comprises the LED lamp set, a triode Q1 and the single chip microcomputer, wherein a collector of the triode Q1 is connected with the cathode of the LED lamp set through a resistance R1; a base of the triode Q1 is connected with an output port of the single chip microcomputer through a resistance R2; an emitter of the triode Q1 is connected with a common port. Through the adoption of the control method of the LED illuminating lamp for refrigerators provided by the invention, the service life of the LED illuminating lamp is prolonged, and energy conservation is facilitated.