Led lenser m5 vs fenix tk41 vs $10 homebuilt 100w flashlight
A completely unfair comparison between the LED Lenser M5, the Fenix TK41 and my $10 homebuilt 100W LED flashlight.
Dual complementary opto-isolator dcoi mosfet driver #6 – holy grail
In preparation for my next MOSFET tutorial, I'm using the DCOI driver with an added bootstrap capacitor to drive the…
Dual complementary opto-isolator dcoi mosfet driver #5 – circuit diagram
I've finally got round to drawing the circuit diagram for the DCOI MOSFET driver, so here it is with an…
Testing a few cheap led ammeters bought on ebay
I just love these cheap LED voltmeters and ammeters you can get on eBay. Here I wire a bunch of…
Monster 7,500 lumens 100w led flashlight for under $10
Help support Julian's LED videos on Patreon: https://www.patreon.com/julian256 I discovered that due to a lucky co-incidence of voltage and internal…
How to use the xl6006 sepic led driver module #2
After a fair bit of experimentation, I've found that the 12v supply can be used as a shut-off signal for…
How to use the xl6006 sepic led driver module #1
Sure Electronics make this excellent SEPIC LED driver module, but there's some confusion over how to drive the enable input.…
V7 energy saving led spot light gu10 7w
energysavingled.com sent me this 7W GU10 LED spotlight for review. I was interested primarily in the safety aspects of this…
Sequencing 30 high power leds with arduino and led drivers #4
Finally, my 30 LEDs are flashing the desired sequence. Numerous minor issues.
Sequencing 30 high power leds with arduino and led drivers #3
Using an Arduino to sequence 30 high power 3W LEDs with three different LED drivers