| 摘要 |
Light sources (1) for replacing fluorescent lamps (100) are provided with terminals (11, 12) for exchanging alternating current signals having frequencies of at least kHz with drivers (5), with rectifiers (13) having inputs coupled to the terminals (11, 12) via capacitors (14), and with light emitting diodes (15) coupled to outputs of the rectifiers (13). The rectifiers (13) rectify the alternating current signals and the capacitors (14) provide safety to persons installing the light sources (1). Preferably, the light sources (1) have different ends where the different terminals (11, 12) are located. Each terminal (11, 12) may comprise two pins (21, 22, 23, 24) interconnected via fuses (31,32). Drivers (5) for replacing fluorescent ballasts (500) are provided with inputs (51, 52) to be connected to voltage sources (6)and with outputs (53, 55) for exchanging the alternating current signals with the light sources (1). The drivers (5) may comprise switching circuits (61) for producing the alternating current signals, outputs of the switching circuits (61) being coupled to outputs (53, 55) of the drivers (5) via reactive circuits (62, 63, 66) with inductors (62), capacitors (66) and transformers (63). |
| 主权项 |
1. A light source comprising:
first and second terminals configured for exchanging with a driver an alternating current signal of at least 1 kHz, the light source having a first end where the first terminal is located and a second end where the second terminal is located, the first terminal comprising two first pins and the second terminal comprising two second pins, a rectifier with a first input coupled to the first terminal and with a second input coupled to the second terminal, and at least one light emitting diode coupled to outputs of the rectifier, wherein the first input of hte rctifier is coupled to the first terminal via a capacitor. |
