Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1977-05-19
1978-02-21
Shoop, William M.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 10BP, 320 35, H02J 900
Patent
active
040755045
ABSTRACT:
Apparatus for supplying electrical power to d.c. loads such as lights, pumps and the like in a recreational vehicle. A converter is connected to an a.c. power source external to the vehicle to convert a.c. power therefrom to d.c. power and to supply the d.c. power produced to the loads. The converter has a maximum d.c. current output rating. A chargeable battery supplies d.c. power to the loads when an external a.c. power source is unavailable. A battery charging circuit is supplied with d.c. power by the converter for charging the battery so it has sufficient stored energy to supply d.c. power to the loads. The converter supplies power to the battery charging circuit concurrently with the supply of d.c. power to the loads. The power demand on the converter both by the d.c. loads and the battery charging circuit is sensed and the supply of power to the battery charging circuit is interrupted when the demand reaches a predetermined level whereby charging of the battery is thereupon interrupted and all the d.c. power up to the maximum current output rating of the converter is made available to the d.c. loads.
REFERENCES:
patent: 3538415 (1970-11-01), Wilson
patent: 3842288 (1974-10-01), Bradshaw
patent: 4015171 (1977-03-01), Miller
Basler Electric Company
Shoop William M.
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