Blog

2025
- August
2024
- September
- July
- May
- March
2023
- November
- August
- February
2022
- January
2021
- December
- October
- February
- January
2020
- November
- October
- April
- February
2019
- December
- November
- September
- July
- June
- April
- January
2018
- December
- November
  - Power LED lamp repair
    11/09/18
    My father bought a second hand high power lamp powered by 3 18650 cells.
    
    Unfortunately after installing the batteries there were no way to turn it off.
    
    I have opened up with: "worst case I will put a switch to it" in my mind.
    
    The circuit inside is simple:
- October
- September
- July
- June
- May
- March
- February
2017
- December
- November
- October
- September
- June
- May
- February
2016
- December
- November
- October
- August
- June
- May
- April
- March
- January
2015
- September
- June
- May
- April
2014
- December
- September
- July
- June
- May
- January
2013
- December
- October
- September
- August
- June
- May
- March
- February
2012
- November
- August
- June
- May
- April
- March
- February
- January
2011
- December
- November
- October
- July
- June
- May
- February
- January
2010
- December
- October
- September
- August
- June
- May
- April
- March
- February
- January
2009
- December
- October
- July
- June
- May
- April