Sometimes you need random numbers — and properly random ones, at that. [Sean Boyce] whipped up a rig that serves up just that ...

You know just what to do. The ground pin of a LM7805 connects to the cathode of a TL431 programmable Zener diode pulled from an old scrapped TV. The diode is referenced to a voltage divider ...

At last, some 'spare' time this weekend, and I learned two things about SCR dc motor control: Permanent magnet dc motors need ...

A new family of 25 superjunction MOSFETs from Magnachip offers improved specific on-resistance, faster switching speeds, and ...