In this video I am assembling a multiple fixed rail power supply kit. This power supply works with a 5-24V input either through a USB mini socket or a dc barrel jack (2.5mm center positive) and at the output you get +12V, -12V, +5V, -5V and +3.3V. My kit was missing 1 small heatsink and one of the electrolytics was a different value than specified on the PCB.
This is a short weekend video on how I changed the cold white led on my bedside reading lamp to a warm white one which is better for my eyes.
In this video I am repairing an old 19 inch lcd monitor (Iiyama ProLite E481S) who isn’t powering up anymore. As usual with these lcd monitors, the fault is caused by capacitors on the power supply board.
Today we’re going to be making a DIY lithium battery charger and more specifically aimed at charging 18650 cells. I sometimes take apart some of these laptop batteries to recover 18650 cells and I have a bunch so far that I kept. Every-time I salvage these cells I test them before deciding to keep them or not.
As you can imagine it takes time and I need to charge multiple cells at once. So I will be making a charger that can handle 4 x 18650 cells but the project is scalable and you can increase or decrease the number of cells it can handle according to your needs. As usual, links for all the items will be in the video description.
This video is about the 60W dummy load discussed in episode number #38 and #39 and if you haven’t watched those two videos I recommend you do, there will be links below. In this video I am doing a mod to change the range of the dummy load from 0.2A-9.99A to a new range of 20mA to 999mA.