blog post a few days ago, I got the intensity down for night vision for my red flashlight. But I wasn't quite happy with the level and wanted to reduce it even more. To do that I had to unsolder 6 of the 8 AMC7135 350 mA constant current ICs on the PCB of the AMC7135*8 2800mA 4-Group 5-Mode Circuit Board.
My measurements for the High, Medium, and Low settings are:
09 February, 2015
04 February, 2015
I then found this YouTube video describing how the controller circuit board could be replaced by one with more functions. As recommended I therefore ordered an AMC7135*8 2800mA 4-Group 5-Mode Circuit Board with 8 AMC7135 current regulators in parallel. The image shows the original circuit board as connected before the modification in the front in the image and the new one behind it.
The new board gave me the choice of one of 4-groups:
- 3-mode: Lo (5%) - Hi (100%) - Strobe
- 3-mode: Lo (5%) - Mid (30%) - Hi (100%)
- 2-mode: Lo (10%) - Hi (100%)
- 5-mode: Lo (5%) - Mid (30%) - Hi (100%) - Strobe - SOS