Roundup of switched mode buck converter voltage regulators
A full round up of switched mode buck converter voltage (and current) regulator modules. From the very simple (and very…
Experimental welding without welding equipment just solar panels
I noticed that my 80W solar panel produces a sustainable arc when shorted out. I wondered if could weld metal…
Mppt solar charge controller #13 – conductance, digital filtering and algorithms
Starting to think about MPPT algorithms - P&O (perturb and observe) is simple to understand, but can oscillate around the…
Comparing a 100w led with 2x 55w h4 car headlight bulbs
Most people are familiar with regular H4 car headlight bulbs. Here I compare regular H4 main beams with a 100W…
Exploding diode
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
Mppt solar charge controller #12 – reverse polarity protection explosions
It's not acceptable for commercial products to explode just because the consumer connects things up the wrong way round. Reverse…
How to light up leds without resistor math
Want to light up LEDs without all that resistor math? Just cheat, and use a 1k resistor on everything. It…
Mppt solar charge controller #11 – new pwm dial, 80w panel the sprinkler
I've fitted a new potentiometer with a nice visible numbered dial which makes it much easier to see the relationship…
Microchip pic12f683 as a variable frequency charge pump part 2
The charge pump circuit is mounted onto a strip of prototyping board ready for attaching to the MPPT Solar Charge…