| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F38-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B41-391 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F38-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B41-391 |
| filingDate |
1972-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1973-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_130af919a1eee852494c8891e5bc5842
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e51ac3acd688b39770bc66d70db22d8f |
| publicationDate |
1973-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3772565-A |
| titleOfInvention |
Lamp ballast device |
| abstract |
Electrical ballast provides regulation of the operating wattage for gaseous discharge lamps such as high pressure sodium lamps over the entire life of the lamp. Ballast comprises a high leakage reactance transformer having primary and secondary windings on different core portions with a magnetic shunt between the windings, slots in the core under the secondary winding, and a capacitor connected in series with the secondary winding. The transformer is constructed so that its leakage reactance is from two to four times the capacitive reactance provided by the series capacitor. The control of the leakage reactance is obtained by provision of a predetermined cross-sectional area of the magnetic shunt in combination with a non-magnetic gap. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8016433-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7926956-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3873910-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9425644-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7950807-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009035000-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11206722-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6144168-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008297736-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7847664-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5406175-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008246928-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008218701-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4016452-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010283571-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008218703-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4591763-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6225757-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8534847-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7976173-B2 |
| priorityDate |
1972-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |