{"product_id":"3a-dc-dc-converter-cnc-control-box","title":"DC-DC Step-Down Converter – 3A, 12V CNC Control","description":"\u003cp\u003eDC-DC buck (step-down) converter for generating 12V DC from the 36V supply in the How To Mechatronics CNC control box. The 12V circuit is used for the enclosure cooling fan and the optocoupler input circuitry.\u003c\/p\u003e\u003ch3\u003eRequired for this build\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNominal input: 36V DC\u003c\/li\u003e\n\u003cli\u003eOutput: regulated 12V DC\u003c\/li\u003e\n\u003cli\u003eOutput-current class: 3A\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e the exact converter module must tolerate the maximum real power-supply voltage and electrical transients with suitable margin. Some commonly advertised LM2596 modules have a 40V maximum input rating and should not automatically be considered suitable at a 36V nominal input. Set and verify output voltage before attaching the 12V load.\u003c\/p\u003e\u003cp\u003eSee the \u003ca href=\"https:\/\/howtomechatronics.com\/cnc\/how-to-make-a-cnc-control-box-complete-guide-grbl-cnc-motion-controller-htmcnc-2\/#h-bill-of-materials\"\u003eoriginal control-box guide\u003c\/a\u003e.\u003c\/p\u003e","brand":"HT Mechatronics","offers":[{"title":"Default Title","offer_id":68230792446083,"sku":null,"price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/3003\/7891\/files\/dc-dc_buck_converter.jpg?v=1793876461","url":"https:\/\/ht-mechatronics.com\/products\/3a-dc-dc-converter-cnc-control-box","provider":"HT Mechatronics","version":"1.0","type":"link"}