Esptronics 10 Pcs 9 Watt DOB White Color for LED Bulb Direct On Board Electronic Components Electronic Hobby Kit
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DOB is short for "driver-on-board". In conventional LED lighting systems the driver is typically separated from the LED assembly and fabricated on an FR4 printed circuit board (PCB). This configuration is based on the consideration that LED drivers have been dominantly designed as switching mode power supplies.
