{"product_id":"drok-12v-480w-adjustable-ac-to-dc-buck-converter","title":"DROK 12V 480W Adjustable AC-to-DC Buck Converter","description":"\u003cp\u003e\u003cstrong\u003eThe DROK 12V 480W adjustable AC-to-DC buck converter delivers a stable, variable DC output from 0–12V with up to 40A continuous current for bench, CCTV, automotive and DIY electronics projects.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact, fan-cooled switching power supply accepts 110–220VAC input (selectable) and converts it to a regulated DC output with 0.1V precision. Built with an LED display, potentiometer control, heat sink and protective circuitry, it’s designed to power devices that require precise low-voltage DC — from single-board computers and LED arrays to motors and CCTV cameras — provided the connected load does not exceed the unit’s 40A limit.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I set the correct input voltage so I don’t damage the unit?\u003c\/h3\u003e\n\u003cp\u003eBefore connecting to AC mains, identify your local supply and move the input-voltage selector to 110V or 220V accordingly. The selector switch is located on the right side of the enclosure. Failure to switch to the proper input voltage can permanently damage the converter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLocate the slide switch on the right side of the case.\u003c\/li\u003e\n  \u003cli\u003eSet to 110V for regions with ~110–120VAC mains; set to 220V for ~220–240VAC mains.\u003c\/li\u003e\n  \u003cli\u003eConfirm wiring: L = live, N = neutral, ⏚ = ground.\u003c\/li\u003e\n  \u003cli\u003ePower on and verify the LED display shows expected output before connecting sensitive equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protections and cooling features prevent overheating or short circuits?\u003c\/h3\u003e\n\u003cp\u003eThe DROK unit includes multiple safety layers: a heat sink for passive dissipation, an automatic cooling fan that activates under heavier load, and built-in protections to guard attached devices. These measures reduce thermal stress and help avoid damage from overloads and short circuits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThermal control: large aluminum heat sink plus automatic fan activation.\u003c\/li\u003e\n  \u003cli\u003eElectrical safeguards: over-current, over-voltage and short-circuit protection.\u003c\/li\u003e\n  \u003cli\u003eLED screen provides real-time output monitoring to detect abnormal behavior.\u003c\/li\u003e\n  \u003cli\u003eNote: motors and inductive loads may have high starting currents that require soft-start protection or separate current-limiting measures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I adjust output voltage and what devices can I power?\u003c\/h3\u003e\n\u003cp\u003eOutput voltage is changed using the built-in potentiometer; the LED readout displays voltage to 0.1V accuracy. The converter supports a wide set of nominal voltages commonly needed for electronics, and the maximum continuous output current is 40A (480W total), so match your load accordingly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVoltage range: 0–12V DC, selectable points include 3V, 5V, 6V, 9V and 12V.\u003c\/li\u003e\n  \u003cli\u003eVoltage resolution\/precision: 0.1V on the LED display.\u003c\/li\u003e\n  \u003cli\u003eCurrent capacity: up to 40A continuous; actual current equals load draw.\u003c\/li\u003e\n  \u003cli\u003eTypical uses: CCTV systems, lab bench power, car\/RV electronics, LED strips, single-board computers and certain low-voltage motors (if starting current is compatible).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat wiring and installation details should I follow for safe operation?\u003c\/h3\u003e\n\u003cp\u003eWire the AC side to ground (⏚), N (neutral) and L (live). On the DC side, connect V+ for positive and V- for negative. Mount the unit in a ventilated location and avoid enclosing it where the fan cannot expel heat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAC input terminals: ⏚ (ground), N (neutral), L (live).\u003c\/li\u003e\n  \u003cli\u003eDC output terminals: V+ (positive), V- (negative).\u003c\/li\u003e\n  \u003cli\u003eDo not exceed 40A continuous or allow short circuits; install fuses or breakers appropriate to your load.\u003c\/li\u003e\n  \u003cli\u003eFor inductive loads, provide a soft-start or inrush protection to prevent damage from high starting currents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Engineers, hobbyists and technicians who need a high-current, adjustable DC source for development benches, CCTV installations, automotive retrofits or lab testing will find the DROK 12V 480W buck converter useful. It suits anyone who requires compact, visible voltage control and robust protections, provided connected devices draw no more than 40A and any high inrush currents are managed externally.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I run a 40A motor with this power supply?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can if the motor's starting (inrush) current does not exceed the supply's limits; otherwise add a soft-start or inrush limiter. Continuous draw must remain ≤40A.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to change any settings before first use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — set the input selector to your local AC mains (110V or 220V) before powering on to avoid damage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DROK","offers":[{"title":"Default Title","offer_id":48413621518493,"sku":"B0B18JVDGP","price":70.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/drok-front-panel-led-display_52bf677a-cb19-4fa8-9351-c37b60c67fd4.jpg?v=1781274589","url":"https:\/\/nexoltic.com\/products\/drok-12v-480w-adjustable-ac-to-dc-buck-converter","provider":"Nexoltic","version":"1.0","type":"link"}