The invention is set for connecting L.E.D., bridging rectifier and AC/DC power transformer by using series connection method, also the main purpose is for saving energy and reducing the cost of electronic components. The first apparatus is built by first bridge rectifier, first L.E.D. group and first...http://www.google.fr/patents/US7408304?utm_source=gb-gplus-shareBrevet US7408304 - Apparatus for power circuit of light emitting diode
Apparatus for power circuit of light emitting diode
