FIG. 11 shows an example LED lighting system 20 in the topology 1, 3, 3 (1 PS 10×3 DRV 36 (361 and 362 and 363)×3 LED lighting source 40 (401 and 402 and 403) commutation policy ending configuration LED lighting source 402 connected to PS 10 through DRV 361.
FIG. 11 shows when the LED lighting source 401 becomes defective or inoperative. Thus, when the LS 48 sends information to the MCC 38 that the LED lighting source 401 is not adequate, the measurement of Vin permits the MCC 38 to determine whether there is adequate voltage level coming from the PS 10, while the measurement of Vout permits the MCC 38 to determine whether the adequate voltage transformation took place and the appropriate/correct voltage level the MCC 38 commands the OS 37 to disconnect from its LED lighting source 401, and to establish contact with the next available LED lighting source, LLS 402. When only the LED lighting source 401 become nonfunctional, the DRV 361 connected to the LLS 402.
In FIG. 11, the example LED lighting source 401 becomes non-functional or defective. The next spare LLS 402 replaces the initially selected LLS 401. This ensures LED lighting system 20 is operational, creating a new PPW 2:
PS 10>IS 35>DRV 361>OS 37>LED lighting source 402
