A USB Charger That Goes Up To 11 10


The good folks at Ntonpower have sent me this utterly ridiculous, and fantastically over-powered USB charger. It has ten frickin' ports each one capable of delivering 2.4 amps. So, what's it like? Straight up, it looks like a plastic toast rack. It's a chunky beast, but surprisingly lightweight. You won't have trouble lifting it, but […] Read More

AC DC AC DC AC DC AC DC


My solar panels deliver pure Direct Current electricity into my house. All my house has Alternating Current circuits. Therefore, I need an inverter to change the DC to AC. This is inefficient. Most of the electronic devices I own are powered by DC. So I plug little wall-warts into the AC sockets to convert back […] Read More

Let's get the IEC Power Symbol into Unicode


I've just launched a campaign to get the IEC Power Symbol into Unicode! A couple of months ago, I asked this question on HackerNews I was looking for the electrical "standby" symbol - AKA IEC5009 / IEEE1621. You know, the circle with the line through it. The one that's on every single bloody piece of […] Read More

How Our Solar Panels Have Performed After 1 Year


Last year, Liz and I took the plunge and had Solar Panels installed on the house we rent out. I've been tracking their progress, and so now it's time for our yearly update. We based our estimations on the Europa Solar Calculator which estimated that they would generate around 2,700 kWh per year. Annoyingly, we […] Read More

Universal Power Supplies


In 1998, Douglas Adams wrote a essay about the de facto Universal Power Supply - the in-car cigarette lighter. He was half right. We've settled on USB as the standard  - simply because it's ubiquitous. A few days ago, the ITU finally caught up with the rest of the world and endorsed micro-usb as the […] Read More