Trinity Amps Guitar Amp Forum
It is currently Tue Oct 27, 2020 8:12 pm

All times are UTC - 5 hours [ DST ]

Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: VRM temp
PostPosted: Sun Jul 28, 2019 4:22 pm 

Joined: Sun Jul 28, 2019 4:02 pm
Posts: 4
Hey y'all! First post from a Trinity amp fan and my first build (5e3 kit). Build went off without a hitch and the amp sounds incredible. I do have one question though. I opted to install VRM kit at the time of build, and everything seems to be working properly. All voltages are within 10% of what they should be, and I get a voltage change when adjusting VRM. However, when running the VRM at about 50% or so, the MOSFET gets so hot you can't touch it (think of how hot a power tube gets). I haven't actually measured the temp, but I will if need be.

I have the MOSFET installed on the side of the chassis according to the diagram. Like I said, the amp works perfectly, but I just wanted to know if this heat is normal. I've played it maybe 45 minutes continuously at the longest at somewhat bedroom volume.

Thanks for all your help everyone!

 Post subject: Re: VRM temp
PostPosted: Sat Aug 17, 2019 3:37 pm 
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7442
Location: Brighton, Canada
the MOSFET is acting like a big resistor so at low levels it gets hot. The only way to cool it down more, is to add a second heat-sink on the outside.
That would not be a bad thing but over time, there have been very few MOSFET failures due to heat.

Web: Facebook: Twitter: @trinityamps

Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 2 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group