GB F5X Amp final build Cases

[EUVL]

See update here for the adaptor screws :
F5X -- the EUVL Approach - The Build Thread


Patrick

 

[starcat]

Hi guys, is a new GB planned for this? Thanks

 

[EUVL]

No, but what are you after ?
Case only, case with PCBs and matched FETs, or fully finished ?
Where is your location ?

You can send PM.


Patrick

 

[Lbud4]

Waiting for Morde to test. He already has new PCBs for that.

The diodes under test are 3-pin TO220.
It has a lower forward voltage, which reduces dissipation in the regulator heatink.
You should then run the regulator as pure cap multiplier (without the Zener).
The amp will see a fraction of a volt more rail voltage.
So no issue.

If you want to try in parallel, contact Morde for PCBs and details.


Patrick

Just want to check and see if there is any update on the diodes and your findings.

 

[EUVL]

He did not bother to change in the end.

This is what I chose back then :
https://www.st.com/en/diodes-and-rectifiers/ferd20m60.html

But you may also use any TO220 Schottky diodes, or even LT4320.
Just make sure voltage is >50V, and current >10A.
I have a PCB for LT4320 (not proven) but I do not like a switcher on my power amps.


Patrick

 

[Morde]

I have been lazy and also a house building project ongoing so I haven't changed the rectifier diodes yet. The new PCBs designed by Patrick are waiting in my drawers...
The amp works perfectly with the original diodes, just a little bit on the hotter side. If I remember correctly the regulator sinks were at ~65 deg C after one hour.

 

[EUVL]

Thx for the update.


Patrick