Ac Driven Light-Emitting Diodes
First Claim
1. A circuit (2, 41, 71, 91, 111) comprising at least two parallel-connected light-emitting diodes (4, 5, 46-53, 74-77, 96, 97, 118-121) of opposite pole in a first parallel branch (12, 42, 72, 92, 112) and comprising at least two parallel-connected light-emitting diodes (6, 7, 56-63, 78-81, 98, 99, 122-125) of opposite pole in a second parallel branch (13, 43, 73, 93, 113), and also comprising a capacitor (8) and a coil (9), characterized in that the first parallel branch (12, 42, 72, 92, 112) has the capacitor (8) and the second parallel branch (13, 43, 73, 93, 113) has the coil (9).
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Accused Products
Abstract
The invention relates to a circuit (2) comprising at least two parallel-connected light-emitting diodes (4, 5) opposite poled in a first parallel branch (12) and comprising at least two parallel-connected light-emitting diodes (6, 7) opposite poled in a second parallel branch (13), and also comprising a capacitor (8) and a coil (9). According to the invention, the first parallel branch (12) has a capacitor (8) and the second parallel branch (13) has the coil (9). On account of the capacitive parallel branch (10) and the inductive parallel branch (11), idle currents arise which are phase-shifted with respect to one another. The idle currents compensate one another and light changes of the oppositely-poled diode pairs take place at different points in time. A light current is thun smoothed.
43 Citations
16 Claims
- 1. A circuit (2, 41, 71, 91, 111) comprising at least two parallel-connected light-emitting diodes (4, 5, 46-53, 74-77, 96, 97, 118-121) of opposite pole in a first parallel branch (12, 42, 72, 92, 112) and comprising at least two parallel-connected light-emitting diodes (6, 7, 56-63, 78-81, 98, 99, 122-125) of opposite pole in a second parallel branch (13, 43, 73, 93, 113), and also comprising a capacitor (8) and a coil (9), characterized in that the first parallel branch (12, 42, 72, 92, 112) has the capacitor (8) and the second parallel branch (13, 43, 73, 93, 113) has the coil (9).
- 9. A housing (142) for a light-emitting diode (141), comprising two electrically conductive supply rods (143, 144) and comprising a light-emitting diode chip (149) in a reflector cup (145) at an upper end (151) of one supply rod (143), wherein an electrically conductive connection (147) extends from a surface of the chip (149) to the second supply rod (144), characterized in that a second chip (150) is arranged on the second supply rod (144).
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16. A circuit (2, 41, 71, 91, 111) comprising light-emitting diodes (4-7, 46-53, 56-63, 74-81, 96-99, 118-125) connected in pairs, and also comprising a capacitor (8) and a coil (9), wherein the diodes (4-7, 46-53, 56-63, 74-81, 96-99, 118-125) of each diode pair (10, 11, 82, 83, 84, 85, 94, 95, 114, 115, 116, 117) are connected in parallel and are of opposite pole, with a first diode pair (10, 82, 83, 94, 114, 115) in a first parallel branch (12, 42, 72, 92, 112) and a second diode pair (11, 84, 85, 95, 116, 117) in a second parallel branch (13, 43, 73, 93, 113), characterized in that the first parallel branch (12, 42, 72, 92, 112) has the capacitor (8) in series with the first diode pair (10, 82, 83, 94, 114, 115) and the second parallel branch (13, 43, 73, 93, 113) has the coil (9) in series with the second diode pair (11, 84, 85, 95, 116, 117).
Specification