| 摘要 |
<p>PURPOSE: A safely radiating light emitting diode lighting circuit is provided to operate different LED devices normally by enabling a constant diode to maintain a certain current when one LED is a short circuit. CONSTITUTION: In a safely radiating light emitting diode lighting circuit, one constant current unit(110) supplies a constant current in spite of low voltage. A plurality of lighting units(111) are serially connected to the constant current unit. The constant current unit includes a plurality of constant diode groups which are connected in parallel with each other. A first light emitting diode(LED1) is serially connected to the one group of the constant current diode groups.</p> |
