The direct power flow from the DC adapter to the battery pack is prevented by two Schottky diodes ( 1N5822 ). In this condition, the gate of the p-channel MOSFET ( IRF9540 ) is high, so it will not conduct, and no power flow from the battery pack to the output. In normal condition, power from the mains is drawn by a DC adapter through the input DC jack to charge the 6 x 18650 batteries and to provide power to the two output DC Jacks through the DC-DC converter modules. The working of the circuit is broadly divided in two conditions: Double-Sided Tape ( Amazon / AliExpress )Ģ1. 18650 Insulation Gasket ( Amazon / AliExpress )Ģ0. Heatshrink Tube ( Amazon / AliExpress )ġ8. Voltmeter Display ( Amazon / AliExpress )ġ7. Heat Sink - 11x11x5 ( Amazon / AliExpress )ġ5. Heat Sink - TO220 ( Amazon / AliExpress )ġ4. DC Jack Male/Female ( Amazon / AliExpress )ġ3. Rocker Switch - 10 x15mm ( Amazon / AliExpress )ġ0. Schottky Diode - 1N5822 ( Amazon / AliExpress )ĩ. p-channel MOSFET ( Amazon / AliExpress )ħ. Buck-Boost Converter ( Amazon / AliExpress )Ħ. Buck Converter - XL4015 ( Amazon / AliExpress )ĥ. Pure Nickel Strip -0.15mm ( Amazon / AliExpress )Ĥ. 18650 Battery Holder ( Amazon / AliExpress )ģ. Note: You can get all types of modules in PCBWay StoreĢ. If you enjoy my work here on Instructables, consider joining my Patreon, it will be a great help for me to make more interesting projects in the future. Two Output Ports: 12V /2A and 5V/2A or 9V/2A
Automatic Switching ( by using MOSFET ) between the power supply and battery pack during the power failureĢ. I have already posted 3 Instructables ( V1, V2, and V4 ) on DIY Mini UPS, but this Instructables is the most advanced one which is designed by considering the feedback from the users of my earlier versions of UPS.ġ. Using a conventional UPS ( Bulky and Costly ) It is annoying if you are in an important meeting/webinar through Zoom, WebEx, or MS-Team, and there is an interruption due to power cuts.ġ. More and more of us are working from home these days, and that means your home's WiFi networks are more important than ever.Īnyone with a fixed-line connection will know that their WiFi drops whenever the power goes out. The pandemic COVID-19 outbreak forced companies to continue with work-from-home policy to maintain social distancing and for business continuity.
0 kommentar(er)
