Would a 660 vct transformer work for the SPP? I know it's a little more than what's recommended.
Edcor XPWR178-120
https://www.edcorusa.com/xpwr178
Edcor XPWR178-120
https://www.edcorusa.com/xpwr178
I cannot contribute as to where your b+ will come out at or wether it will be too high, but that will work as a power transformer. There is no direct current going through the power transformer.
Direct current will be absorbed by the OUTPUT TRANSFORMER, which will need to have a correct air gap to deal with this. But, the power transformer will only see an AC load. No air gap will be needed, nor would you want one.
Direct current will be absorbed by the OUTPUT TRANSFORMER, which will need to have a correct air gap to deal with this. But, the power transformer will only see an AC load. No air gap will be needed, nor would you want one.
1108,
Do you already have this power transformer?
Please refer to post #574 of following thread - 660vct will be on the high side probably:
http://www.diyaudio.com/forums/tubelab/148694-tubelab-simple-p-p-58.html
The Hammond PT rknize mentions (Hammond 373CZ is 650 vct).
Do you already have this power transformer?
Please refer to post #574 of following thread - 660vct will be on the high side probably:
http://www.diyaudio.com/forums/tubelab/148694-tubelab-simple-p-p-58.html
The Hammond PT rknize mentions (Hammond 373CZ is 650 vct).
Do not give up hope.
Link for PSUD2 mentioned by PDL earlier:
PSUD2
However I have no experience with this software... I am assuming you can simulate with different values of B+ - give it a try - by changing some values of components you might get in the ballpark of running some JJ EL84s with your PT.
Link for PSUD2 mentioned by PDL earlier:
PSUD2
However I have no experience with this software... I am assuming you can simulate with different values of B+ - give it a try - by changing some values of components you might get in the ballpark of running some JJ EL84s with your PT.
Last edited:
PSUD...
I have used this software to design several power supplies including the one for my TSE with type 45 tubes and my SSE. It was easier than trying to work with formulas that I learned 50 yrs ago with the actual build results being within a couple of volts of what the program predicted. Take a little time to learn how to feed-in/change different component values and you should come up with a circuit that will let you use the PT you have.
I have used this software to design several power supplies including the one for my TSE with type 45 tubes and my SSE. It was easier than trying to work with formulas that I learned 50 yrs ago with the actual build results being within a couple of volts of what the program predicted. Take a little time to learn how to feed-in/change different component values and you should come up with a circuit that will let you use the PT you have.
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- More Vendors...
- Tubelab
- SPP Transformer question