Dhananjay Gadre] happened across a useful little trick the other day. Take any old 1N4148 or 1N914 glass-package signal diode ...

The Treedix multifunction USB cable tester quickly identifies which cables still work and which ones belong in the recycling bin.

But just as important as spotting the real thing is recognizing when something’s not. Below, expert designers and antiques ...

I've often wondered how to tell if a vintage item I find is actually valuable or just a cool piece to decorate my home. The ...