US 9,812,861 B2
Power adapter and method of adapting power for electronic devices
Peiqi Zhou, Shanghai (CN); and Wei Yan, Shanghai (CN)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 14/350,401
Filed by Peiqi Zhou, Shanghai (CN); and Wei Yan, Shanghai (CN)
PCT Filed Oct. 8, 2011, PCT No. PCT/CN2011/001670
§ 371(c)(1), (2), (4) Date Mar. 25, 2015,
PCT Pub. No. WO2013/049955, PCT Pub. Date Apr. 11, 2013.
Prior Publication US 2015/0236505 A1, Aug. 20, 2015
Int. Cl. H02J 1/04 (2006.01)
CPC H02J 1/04 (2013.01) [Y10T 307/549 (2015.04)] 21 Claims
OG exemplary drawing
 
1. An electrical power adapter comprising:
a plurality of input ports each connectable to an electrical power source, each of the input ports having a power terminal;
an output port connectable to an electronic device and having a power terminal; and
a control circuit to control a flow of electrical power to the power terminal of the output port, the control circuit coupled to the power terminals of the input ports and comprising:
a logical OR circuit having at least two OR inputs and an OR output, a first OR input coupled to the power terminal of a second one of the input ports, a second OR input coupled to the power terminal of a third one of the input ports,
a logical AND circuit having at least two AND inputs and an AND output, a first AND input coupled to the OR output, a second AND input coupled to the power terminal of the first one of the input ports.