There’s a really useful variant of the LM2596 voltage regulator called the LM2596HV which can handle 60 volts on its input. But be careful – some that I bought recently turned out to be fake. At about 50v, the regulator became unstable and died which could very easily destroy whatever you have connected to the [...]

Continue reading about Fake LM2596HV Voltage Regulator Buck Converter Modules bought on eBay

Using the Dual Complementary Opto-Isolator (DCOI) MOSFET driver to interface a microcontroller with high-side and low-side, N channel and P channel MOSFETs.

Continue reading about Practical MOSFET Tutorial #6 – DCOI Opto-Isolator Driver

Julian on January 2nd, 2014 sent me this 7W GU10 LED spotlight for review. I was interested primarily in the safety aspects of this product.

Continue reading about V7 Energy Saving LED Spot Light GU10 7W

Continue reading about 5A Auto Blade Fuse Repairs itself Automatically after it Blows

Julian on January 27th, 2013

Continue reading about How to Remove Snow from Solar Panels – Fast

Continue reading about 3rd generation Sanyo eneloop AA Battery Specification and Discharge Test

Julian on October 17th, 2012

Continue reading about Playing with Solar – Adding more Panels

Julian on September 28th, 2012

Continue reading about Playing with LEDs – 10W Floodlight with PIR

Julian on September 18th, 2012

Continue reading about Playing with Solar – Amorphous v Silicon Wafer

Julian on September 13th, 2012

Continue reading about Playing with Solar – Croc Clips and Banana Plugs