Bottlehead Forum

General Category => Technical topics => Topic started by: ALL212 on January 14, 2018, 12:04:12 PM

Title: Bottlehead transformer mounting
Post by: ALL212 on January 14, 2018, 12:04:12 PM

Is the isolation of the main transformer for electrical or mechanical reasons?  I've torn apart some older amps and have never come across the isolation that BH puts into this.

Just wondering...

Thanks,
Aaron

Title: Re: Bottlehead transformer mounting
Post by: Paul Joppa on January 14, 2018, 02:45:29 PM

Isolating the transformer core from the chassis and using one terminal to ground it to the safety ground reduces the leakage and magnetically-induced currents (a kind of ground loop) in the plate itself; this in turn reduces hum and/or buzz.

Title: Re: Bottlehead transformer mounting
Post by: ALL212 on January 14, 2018, 03:39:14 PM

Thanks Paul!