{"product_id":"high-power-dc-step-down-power-module-12v-to-9v-3-7v-lcd-digital-display-led-constant-current-board","title":"High Power DC Step-down Power Module 12V To 9V 3.7V LCD Digital Display LED Constant Current Board","description":"\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eProduct parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eInput voltage: DC5.3-32V (minimum input of 4V to achieve step-down, but when the input is lower than 5.3V, the voltage and current measurement is not accurate, the input needs to be DC)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOutput voltage: DC1.2-32V (The input voltage must be higher than the output voltage, the minimum differential voltage is 0.8V)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOutput current: can work stably at 8A for a long time, and can reach 12A under enhanced heat dissipation\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOutput power: natural heat dissipation 120W (within 8A), enhanced heat dissipation 160W\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eVoltage display: resolution 0.05V, range 0-32V\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eCurrent display: resolution 0.01A, range 0-12A\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eConversion efficiency: about 96%\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eWorking current: about 25mA\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eSoft start: Yes (large power with load module may fail when starting)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eInput reverse connection protection: Yes\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOutput anti-backflow: no (if charging the battery, first power on the module and then connect the battery, and ensure that the battery voltage is lower than the output voltage; if there are conditions, please connect the anti-backflow diode in the output positive pole)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eShort circuit protection: Yes\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eSize: length * width * height 82 * 52 * 32mm\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eWeight: 80g\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. The factory default output voltage and current of the module is about 18V\/7A. Because the module is a buck module, you need to lower the output voltage below the input voltage to work. If you find that the output voltage cannot be adjusted after receiving the module, please First turn the CV voltage counterclockwise counterclockwise to adjust the potentiometer for more than 20 turns, and then use the module to adjust the voltage normally;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Directly short-circuit the output to adjust the current value, which will cause a large spark to cause danger. It is recommended to lower the output voltage to below 10V before shorting the output terminal, and the CC current potentiometer rotates 10 times or more to the bottom counterclockwise. Then short the output, turn the CC potentiometer clockwise to slowly increase to the desired current value.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eHighlights:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Crystal case, beautiful design, good touch and touch texture;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Press the button to control the output to turn off, and you can set the power-on default to ON or OFF;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e3. LCD can display input and output voltage, output current output power;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e4. Input end anti-reverse protection, reverse connection will not burn;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e5. High efficiency over 95%, high current, low heat, output voltage 1.2-32V can be adjusted freely, constant current value 0-12A can be adjusted, suitable for high-power LED constant current drive, lithium battery battery charging, etc.!\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eFunction Description:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. The module has IN\/OUT, ON\/OFF two buttons: IN\/OUT button switches input voltage and output voltage display, long press can switch output current output power display; ON\/OFF button control output is ON or OFF, long press can Set the default output status of the next power-on to be ON or OFF.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. CC sets the potentiometer for the current. It rotates clockwise to increase the set current. When the load current reaches the set current, it enters the constant current state, the CC constant current indicator (red) lights up; the right CV is the voltage setting. The potentiometer rotates clockwise to increase the output voltage. The OUT indicator is an output status indicator that lights up when there is voltage at the output, otherwise it is off.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eInstructions:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Use as a normal buck module with overcurrent protection\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(1) Adjust the CV constant voltage device so that the output voltage reaches the voltage you want.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(2) Firstly rotate the CC current adjustment potentiometer counterclockwise for more than 10 turns, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potential clockwise. The output current reaches the overcurrent protection value you want to set. (For example, if the current value displayed by the multimeter is 2A, then the maximum current can only be 2A when you use the module, and the red constant current indicator will be on when the current reaches 2A, otherwise the indicator will be off)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Use as a battery charger\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eModules without constant current function cannot be used to charge the battery. Because the voltage difference between the battery and the charger that consumes electricity is too large, the charging current is too large, causing damage to the battery. Therefore, the battery should be used at the beginning. Stream charging, automatically switch back to constant voltage charging when charging to a certain extent.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(1) Determine the float voltage and charge current of the rechargeable battery you need; (If the lithium battery parameter is 3.7V\/2200mAh, then the float voltage is 4.2V, and the maximum charge current is 1C, which is 2200mA)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(2) Under no-load conditions, the multimeter measures the output voltage, and adjusts the constant voltage positioner to make the output voltage reach the float voltage; (If charging the 3.7V lithium battery, adjust the output voltage to 4.2V)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(3) Firstly rotate the CC current adjustment potentiometer counterclockwise for more than 10 turns, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potential clockwise. The device causes the output current to reach a predetermined charging current value;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(4) Connect the battery and charge it.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(Steps 1, 2, and 3 are: input terminal is connected to the power supply, and the output terminal is not connected to the battery at no load)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e3. As a high power LED constant current drive module\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(1) Determine the operating current and maximum operating voltage at which you need to drive the LEDs;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(2) Under no-load conditions, the multimeter measures the output voltage, and adjusts the constant voltage position device to make the output voltage reach the maximum working voltage of the LED;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(3) Firstly rotate the CC current adjustment potentiometer counterclockwise for more than 10 turns, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potential clockwise. The device causes the output current to reach a predetermined LED operating current;\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(4) Connect the LED and test the machine.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e(Steps 1, 2, and 3 are: input is connected to the power supply, and the output is not connected to the LED light.)\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003ePackage included:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e1 x High Power DC Step-down Power Module With Case\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/55\/29\/dd14a62d-a43a-402a-81fa-cbfe3e05fcd0.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/B9\/27\/4e6cc278-a26b-40c6-b20e-366097e627d8.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/75\/84\/e84c4acd-afcd-4982-bc9d-3f991375ef7f.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/54\/51\/d527a310-edbf-4125-9fd6-b2da904a4883.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/65\/0B\/38cda762-ba81-4beb-9883-e13af091a54b.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/8E\/F7\/f20e615b-9e4f-45b5-bb14-34a0b0a73a62.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/87\/93\/e645ec5a-8a9c-4d0e-a1a4-91054572456d.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/11\/23\/fb5534a3-72f7-4294-97f8-bcf671e60923.jpg\"\u003e","brand":"Shopify","offers":[{"title":"Default Title","offer_id":14579022659628,"sku":"1320707","price":537.02,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/dd14a62d-a43a-402a-81fa-cbfe3e05fcd0_55d66bdf-73a9-4b85-b3e3-cb73531fe18c.jpg?v=1582105151","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/high-power-dc-step-down-power-module-12v-to-9v-3-7v-lcd-digital-display-led-constant-current-board","provider":"Electronic Pro ","version":"1.0","type":"link"}