Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Willabe on February 07, 2013, 09:09:40 pm

Title: Fusing for 2 PTs in 1 build?
Post by: Willabe on February 07, 2013, 09:09:40 pm

I'm wondering about what is the best way to fuse 2 PTs on 1 build?

I want to use 2 Hammond 229 series simi-torides for Sluckeys Warbler. 1 for the HT B+ and the other for the heaters at 12acv since it's all 12 - - 7's.

I want to fuse both the primaries and secondaries on both PT's. I'm going to buy some PCB fuse holders, 5mm x 20 mm for the secondaries which will be inside the chassis.

But for the 2 primaries I'm thinking you have to use a fuse for each, because their separate?

If not I have a few IEC pannel sockets I bought from Doug's store that have a 5mm x 20mm fuse holder built in that I could use.

Here's the link for the Warbler build with the schemos;

http://www.el34world.com/Forum/index.php?topic=10681.msg145523#msg145523 (http://www.el34world.com/Forum/index.php?topic=10681.msg145523#msg145523)


                Brad       :think1:

Title: Re: Fusing for 2 PTs in 1 build?
Post by: sluckey on February 07, 2013, 09:33:08 pm

I would keep it simple on this project.... One fuse.

Title: Re: Fusing for 2 PTs in 1 build?
Post by: PRR on February 08, 2013, 12:30:21 am

> fuse both the primaries and secondaries on both PT's.

Why? Are you dropping pennies through the slots?

One fuse. 0.5A if it holds, else 1A.

Title: Re: Fusing for 2 PTs in 1 build?
Post by: Willabe on February 09, 2013, 12:04:29 am

Ok, thanks guys.


             Brad     :icon_biggrin: