| 摘要 |
PURPOSE: A power supply circuit for LED leading lights is provided to add a direct current-direct current (DC-DC) converter circuit, thereby implementing the charging of a high voltage. CONSTITUTION: A power input unit (100) is provided in the input terminal of a commercial alternating current (AC) source. A switching mode power supply (SMPS) unit (200') receives a power source from the power input unit. The SMPS unit outputs a stable power to light emitting diode (LED) leading lights. A charge circuit (300') charges a storage battery. A redundant power supply unit (400) supplies a redundant power source to the LED leading lights. |
