N. Billerica, MA - Sherbourn Technologies has been delivering the world's first and only 7 channel amplifier utilizing 7 individual toroidal transformers AND, two power cords, for nearly two years.

In this video, we cut a 30-pound toroid transformer from a Parasound amplifier using a 60,000 PSI waterjet. Music by David ...

HF radios often use toroidal transformers and winding them is a rite of passage for many RF hackers. [David Casler, KE0OG] received a question about how they work and answered it in a recent video ...

However much care is taken, it is very difficult to keep all traces of transformer-induced hum out of the signal circuitry. It is highly irritating to find that despite the cunning use of low-noise ...