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apparatus for conversion between ac and ac, between ac and dc,or between dc and dc, and for use with mains or similar powersupply systems (568024) 568024
control or regulation thereof (568024) 568024
conversion of dc or ac input power into surge outputpower (568024) 568024
conversion or distribution of electric power (568024) 568024
electricity (568024) 568024
generation (568024) 568024
general tagging of cross-sectional technologies spanning over several sections of the ipc (99951) 99951
general tagging of new technological developments (99951) 99951
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (99951) 99951
physics (91841) 91841
technologies or applications for mitigation or adaptation againstclimate change (85260) 85260
circuit arrangements or systems for supplying or distributingelectric power (73237) 73237
systems for storing electric energy (73237) 73237
basic electric elements (61009) 61009
climate change mitigation technologies related to buildings,e.g. housing, house appliances or related end-userapplications (59259) 59259
electric techniques not otherwise provided for (55790) 55790
controlling (54456) 54456
regulating (54456) 54456
basic electronic circuitry (54215) 54215
systems for regulating electric or magnetic variables (50588) 50588
control or regulation of electric motors, electric generatorsor dynamo-electric converters (45872) 45872
controlling transformers, reactors or choke coils (45872) 45872
pulse technique (42484) 42484
performing operations (36263) 36263
transporting (36263) 36263
electric heating (30005) 30005
electric lighting not otherwise provided for (30005) 30005
emergency protective circuit arrangements (29955) 29955
electric solid state devices not otherwise provided for (28874) 28874
semiconductor devices (28874) 28874
casings or constructional details of electric apparatus (23046) 23046
manufacture of assemblages of electrical components (23046) 23046
printed circuits (23046) 23046
vehicles in general (22923) 22923
technical subjects covered by former uspc (20585) 20585
electric equipment or propulsion of electrically-propelledvehicles (18754) 18754
electrodynamic brake systems for vehicles, in general (18754) 18754
magnetic suspension or levitation for vehicles (18754) 18754
measuring (18100) 18100
testing (18100) 18100
inductances (16534) 16534
magnets (16534) 16534
selection of materials for their magnetic properties (16534) 16534
transformers (16534) 16534
measuring electric variables (15239) 15239
measuring magnetic variables (15239) 15239
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (15164) 15164
technical subjects covered by former us classification (15001) 15001
electric communication technique (13010) 13010
blasting (12908) 12908
heating (12908) 12908
lighting (12908) 12908
mechanical engineering (12908) 12908
weapons (12908) 12908
calculating (10250) 10250
computing (10250) 10250
counting (10250) 10250
climate change mitigation technologies related totransportation (10051) 10051
electric digital data processing (8911) 8911
dynamo-electric machines (6794) 6794
climate change mitigation technologies in the production orprocessing of goods (6734) 6734
information storage (6456) 6456
static stores (5941) 5941
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (5881) 5881
pictorial communication, e.g. television (5629) 5629
amplifiers (5623) 5623
machine tools (5068) 5068
metal-working not otherwise provided for (5068) 5068
processes or means, e.g. batteries, for the direct conversionof chemical into electrical energy (4681) 4681
cladding or plating by soldering or welding (4657) 4657
cutting by applying heat locally, e.g. flame cutting (4657) 4657
soldering or unsoldering (4657) 4657
welding (4657) 4657
working by laser beam (4657) 4657
advertising (4322) 4322
cryptography (4322) 4322
display (4322) 4322
education (4322) 4322
seals (4322) 4322
transmission (4213) 4213
arrangements or circuits for control of indicating devicesusing static means to present variable information (4090) 4090
cinematography (3751) 3751
electrography (3751) 3751
holography (3751) 3751
photography (3751) 3751
human necessities (3589) 3589
electric switches (3486) 3486
emergency protective devices (3486) 3486
relays (3486) 3486
selectors (3486) 3486
impedance networks, e.g. resonant circuits (3458) 3458
resonators (3458) 3458
control or regulating systems in general (3428) 3428
functional elements of such systems (3428) 3428
monitoring or testing arrangements for such systems orelements (3428) 3428
current collectors (3184) 3184
line connectors (3184) 3184
vehicles, vehicle fittings, or vehicle parts, not otherwiseprovided for (3028) 3028
electrophotography (2927) 2927
magnetography (2927) 2927
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English (481165) 481165
Chinese (108675) 108675
French (72870) 72870
German (69691) 69691
Japanese (33997) 33997
Korean (17708) 17708
Russian (10118) 10118
Spanish (3910) 3910
Swedish (2325) 2325
Portuguese (2104) 2104
Italian (1686) 1686
Finnish (1575) 1575
Danish (951) 951
Dutch (868) 868
Polish (711) 711
Norwegian (508) 508
Ukrainian (405) 405
Romanian (381) 381
Czech (139) 139
Slovak (119) 119
Turkish (111) 111
Bulgarian (93) 93
Hungarian (90) 90
Indonesian (48) 48
Latvian (48) 48
Slovenian (43) 43
Hebrew (32) 32
Estonian (28) 28
Greek (27) 27
Croatian (26) 26
Serbian (16) 16
Lithuanian (12) 12
Icelandic (10) 10
Arabic (6) 6
Moldavian (6) 6
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03/2020
The utility model discloses a direct-current surge drive circuit which comprises a signal input end, a signal output end, a voltage stabilization filter circuit, a transformer, a rectification... 
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS | CONTROL OR REGULATION THEREOF | CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER | GENERATION | ELECTRICITY
Patent
by YU NA
07/2019
The utility model discloses a direct-current input power supply, which comprises a shell and a control circuit, the control circuit comprises a PWM control circuit, a second circuit unit, an input... 
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS | CONTROL OR REGULATION THEREOF | CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER | GENERATION | ELECTRICITY
Patent
03/2019
The invention belongs to the technical field of power supplies, and particularly relates to an input surge current suppression circuit for suppressing input starting impact currents... 
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS | CONTROL OR REGULATION THEREOF | CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER | GENERATION | ELECTRICITY
Patent
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