The Yellow Sheet Tube Rectifier Modification
Good morning everyone... I hope all of you are having a good day and are safe.
I've received my 10A10 diodes this morning and let me just say they look great. These diodes are rated 1000V at 10A with very little voltage drop. Yes I know, they are overkill, but they are only six dollars for 10 diode's and that's less than a dollar per diode.
There is a lot of heat being generated inside these tube amplifiers because of the tubes and transformers and many other things along with a small amount of heat that's being generated by a much smaller diode.
To me, it's better to have a little overkill than to have less to make sure voltages stay stable on those tubes.
I will be mounting 2 of these diodes on a terminal strip next to the rectifier tube. The other diodes I'll be using for other projects or repair.
Down below I found a really good video on this subject and it gives a lot of information as to why this modification is necessary and why I am doing this mod.
Have a good day and clear skies everyone and stay safe my friends.
Tom
Dynaco VTA-ST70 Rectifier tube protection mod:
Dynaco VTA-ST70 Vacuum Tube Power Amp Troubleshoot and Repair:
Good morning everyone... I hope all of you are having a good day and are safe.
I've received my 10A10 diodes this morning and let me just say they look great. These diodes are rated 1000V at 10A with very little voltage drop. Yes I know, they are overkill, but they are only six dollars for 10 diode's and that's less than a dollar per diode.
There is a lot of heat being generated inside these tube amplifiers because of the tubes and transformers and many other things along with a small amount of heat that's being generated by a much smaller diode.
To me, it's better to have a little overkill than to have less to make sure voltages stay stable on those tubes.
I will be mounting 2 of these diodes on a terminal strip next to the rectifier tube. The other diodes I'll be using for other projects or repair.
Down below I found a really good video on this subject and it gives a lot of information as to why this modification is necessary and why I am doing this mod.
Have a good day and clear skies everyone and stay safe my friends.
Tom
Dynaco VTA-ST70 Rectifier tube protection mod:
Dynaco VTA-ST70 Vacuum Tube Power Amp Troubleshoot and Repair:
Last edited by Tom Pickett on Wed Apr 28, 2021 3:26 pm; edited 1 time in total