http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016044755-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d79cc5aeecabbee5006cf38933cd9e4d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B20-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B20-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-355 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B47-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-3725 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-375 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B33-0818 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B33-0845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B44-00 |
| filingDate | 2015-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5de7ec11b94ef32c7dd90fbbd10e37a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10f3ec2ba09886c66d3ca948fb454e3f |
| publicationDate | 2016-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2016044755-A1 |
| titleOfInvention | Dimming circuit and method for leds |
| abstract | The present disclosure relates to dimming circuit and method for LEDs. The dimming circuit obtains a DC voltage from an external AC power supply by using a TRIAC, an electronic transformer, and a rectifier bridge sequentially. The dimming circuit comprises a first power stage circuit, a second power stage, a first control circuit, and a second control circuit. The first power stage circuit has an input terminal configured to receive the DC voltage. The second power stage has an input terminal coupled to an output terminal of the first power stage and an output terminal coupled to an LED load. The first control circuit is configured to generate a first control signal in accordance with a first output voltage generated at the output terminal of the first power stage circuit, a first reference voltage and an upper threshold voltage to maintain an average value of the first output voltage to be consistent with the first reference voltage. The second control circuit is configured to generate a dimming signal in accordance with a first current and the first output voltage to control an operation of the second power stage circuit to maintain an output current of the second power stage circuit to be consistent with an expected driving current represented by the dimming signal. The first current is no less than a holding current of the electronic transformer. An input current of the first power stage circuit is maintained to be consistent with the first current by the first control signal when the first output voltage is in a continuously increasing state and is lower than the upper threshold voltage. The first output voltage decreases continuously and the input current is maintained to be consistent with a second current after the first output voltage reaches the upper threshold voltage. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018227995-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10582578-B2 |
| priorityDate | 2013-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.