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LD24AJTA 2 PCS Adjustable LED Driver Board 20W DC6~25V LED PWM Controller DC-DC Step-Down Constant Current Converter: Amazon.com: Industrial & Scientific
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IIVVERR 10 Pcs UC3843 SOP-8 Current Mode PWM Controller IC (10 Pcs UC3843 SOP-8 IC modo actual controlador PWM - - Amazon.com