Here is a simple but inexpensive inverter for using a small soldering iron (25W, 35W, etc) In the absence of mains supply. It uses eight transistors and a few resistors and capacitors. Transistors Q1 ...

Soldering to a PC board can be tricky: Too much heat can make the copper trace lift right off the board substrate. Use a soldering pencil rated at 15-25 watts, no more. (Watch the video; story ...

I've got a Bosch dishwasher that, like many Bosch dishwashers loves to melt the solder off the heater relay and requires repair every 12-18 months. (Bosch dishwasher engineers are completely ...

Element14, Farnell’s online community dedicated to engineering discussion and education, is supplementing classroom-based STEM with a free series of videos entitled ‘The Learning Circuit’. First ...

The cheapest PCBs – and therefore most common – are green solder mask with white silkscreen. It works, but it’s also incredibly boring. This is the way things were done up until a few years ago with ...

We've got a feast for your eyes today, and it's some of the most mesmerizing footage we've seen through a microscope this year. Robert Feranec, a hardware design engineer and educator who runs an ...