http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108076561-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B20-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B44-00 |
| filingDate | 2017-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108076561-B |
| titleOfInvention | LED drive |
| abstract | The present invention discloses a kind of LED drive.In LED drive, adjusting control circuit receives pulse-width modulation signal and clock signal and exports dim signal and sampled signal.The opening time of sampled signal is less than the clock cycle of clock signal.First error amplifier receives back voltage, reference voltage and dim signal and exports offset voltage.Second error amplifier receives offset voltage and ramp signal and voltage pulse output.Drive control device receives dim signal and pulse voltage and exports control signal.Output stage receives control signal and input voltage and generates output voltage to light emitting diode string.Minimum voltage selecting unit selects minimum light-emitting diodes tube voltage.Switch unit is controlled by sampled signal and selectivity is connected so that first error amplifier receives minimum light-emitting diodes tube voltage. |
| priorityDate | 2016-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 15.