Dual power supply switching system operating in parallel for providing power to a plurality of LED display modules
View Patent ↗A dual power supply switching system for use in an electronic sign where independent suitably sized power supplies each capable of independently powering an entire plurality of LED display modules supply power on an alternating distributed basis to the plurality of LED display modules. A microcontroller having an odd or even address on each LED display module controls the connection of the respective LED display module to a particular power supply by controlling onboard solid state switches and, upon sensing an inadequate power source supply, switches to the other power supply to re-establish power to the LED display module.
1. A dual power supply switching system, comprising:
a. dual functioning power supplies, each being utilized in parallel fashion as a power source for a plurality of LED display modules and each also providing power for operation of and in association with other included components;
b. a self-contained microcontroller within each LED display module of the plurality of LED display modules which monitors the input line voltage as supplied by the power supplies;
c. solid state switches with reverse current protection within each LED display module of the plurality of LED display modules connected to the input lines at the LED display modules and controlled by the microcontroller; and,
d. an adjustable switching regulator within each LED display module of the plurality of LED display modules connected to the solid state switches and controlled by the microcontroller for regulated connection of one solid state switch to supply operating voltage for operation of one or more LEDs of an LED display module.