High-power high-reliability circuit based on alternating-current direct-connection LED driven power supplies

The invention discloses a high-power high-reliability circuit based on an alternating-current direct-connection LED driven power supplies. According to the scheme, the high-power high-reliability circuit mainly comprises a surge-resisting piezoresistor, a high-power rectifier bridge, N alternating-current direct-connection LED driven power supplies, a resistor RC for determining LED drive current and N LED lamp strings. The N alternating-current direct-connection LED driven power supplies are connected in parallel, cooperatively drive the LED lamp strings and jointly bear current flowing across the LED lamp strings, alternating-current drive power supplies are evenly dispersed and arranged on an PCB to enable heat produced by the alternating-current direct-connection LED driven power supplies to be evenly distributed, the power and reliability of the alternating-current direct-connection LED driven power supplies are improved, and the service life of the alternating-current direct-connection LED driven power supplies is prolonged.