Every true tech geek worth his or her weight in solder and flux has been foaming at the mouth over a new infomercial on TV. It’s for a device called Cold Heat: a soldering iron that reportedly stays ...

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 ...

The image of the electrical engineer or hacker bent over and using a soldering iron on a circuit board is a classic visual cliché on TV and movies (Figure 1). Figure 1 The electrical engineer working ...

A soldering iron should have a feel and a grip that makes it easy to hold in your hand, as if it were a large pen. For electronics, you want a slim, needle-like tip to aid in getting the heat (and ...