Patent ID: 11895955
Assignee: SHENZHEN NUMBER ENERGY SAVING CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H  Y | IPC A  H

Claim 9:
10. The combined LED lighting system for plant growth of claim 6, wherein
the LED constant current power supply comprises an EMI filter and rectifier circuit, a critical conduction mode power factor correction (CRMPFC) circuit, an LLC half-bridge resonant circuit and an output rectifier and filter circuit,
a commercial power is filtered and rectified by the EMI filter and rectifier circuit and enters the CRMPFC circuit to form a high-voltage DC electrical signal, which enters the LLC half-bridge resonant circuit,
a switch of the LLC half-bridge resonant circuit is controlled by the PWM signal received by the constant current control circuit, and
a resonant signal output by the LLC half-bridge resonant circuit is rectified and filtered by the output rectifier and filter circuit and connected with an LED.