DUAL-INPUT, AUTOMATIC-SWITCHING POWER SUPPLY

A dual-input automatic-switching power supply (20) comprises a primary power input (A), a secondary power input (B) and a power output (22). Included are first and second DPST mechanical relays (K1 and K2) and a third DPDT mechanical relay (K3). A first relay input is connected to the primary power...

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Bibliographische Detailangaben
Hauptverfasser:	SKORJANEC, JOSEPH B, PULIZZI, MICHAEL B, NESBITT, CURT G
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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 BASIC ELECTRONIC CIRCUITRY CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PULSE TECHNIQUE SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A dual-input automatic-switching power supply (20) comprises a primary power input (A), a secondary power input (B) and a power output (22). Included are first and second DPST mechanical relays (K1 and K2) and a third DPDT mechanical relay (K3). A first relay input is connected to the primary power input and a corresponding first relay output is connected to a third input. A second relay input is connected to the secondary power input and a corresponding second relay output is connected to a different third relay input. The third relay output is connected to the power output. The relays i n combination provide a relay moving contact gap spacing, source to source, of at least three millimeters. A first under voltage control module (CM1) maintains the first and third relays in states causing the primary power inp ut to be connected to the power output as long as voltage from the primary powe r input remains above a preestablished primary voltage dropout level.