Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: bruno on October 17, 2010, 10:20:59 am

Title: wiring a high voltage PT and heater voltage PT for the same amp...
Post by: bruno on October 17, 2010, 10:20:59 am

I want to wire two hammond transformers, the main high voltage PT has 180-0-180v tap and a 5v tap, but no 6,3v tap for heaters, so I'm going to have to buy a 6,3V small transformer for the heaters alone, question is... how do I wire it simultaneously with the high voltage PT, since I want to use the same power chord? Shell I just wire them to the same voltage entry point in parallel?

thanks

Title: Re: wiring a high voltage PT and heater voltage PT for the same amp...
Post by: RicharD on October 17, 2010, 10:57:51 am

Sounds to me like you've got it right.  Simply parallel your primaries and send your secondaries about their business.  Here's a link to my current project.  It has a separate PT for the phantom supply, a similar deal.  The powers supply is on the 4th page of the schematic.   :lipsrsealed:

http://www.sotxampco.com/MP4/MP4-KiCad-Schematic.pdf

Title: Re: wiring a high voltage PT and heater voltage PT for the same amp...
Post by: bruno on October 20, 2010, 11:26:34 am

Thanks ;)