Hi all
I lie, it's about another tube PSU 🙂
I am interested in making a PSU like this below. I am reaching out to see if anyone has experience of any schematics that are known to work well, or any past projects about this. I would prefer to come up with a thru hole type only design and no smd
Commercially made example - click this line to see
I am also very interested in any collaboration regarding design and PCB. If there is a usable PCB design, I will order 20 or so and only have use for a few, so will make the rest available for cost plus postage to anyone who contributes to this. Also, I will be ordering parts for this from the better brands in small bulk lots, so will include things like vishay resistors and wima or nichion or whatever is considered upper shelf parts. Again, will make my extras available at cost plus postage to anyone who collaborates on this.
I lie, it's about another tube PSU 🙂
I am interested in making a PSU like this below. I am reaching out to see if anyone has experience of any schematics that are known to work well, or any past projects about this. I would prefer to come up with a thru hole type only design and no smd
Commercially made example - click this line to see
I am also very interested in any collaboration regarding design and PCB. If there is a usable PCB design, I will order 20 or so and only have use for a few, so will make the rest available for cost plus postage to anyone who contributes to this. Also, I will be ordering parts for this from the better brands in small bulk lots, so will include things like vishay resistors and wima or nichion or whatever is considered upper shelf parts. Again, will make my extras available at cost plus postage to anyone who collaborates on this.
Hard, it would require a different core lots of axillary components.
Check out the HA4061-AL. I ran some calculations on that core and it was close to what you are asking. Only trouble is that this core doesn't have the customary 12Vdc winding for feeding the primary controller, so you are left with building yet another supply that is mains referenced for running something like a UC3843.
Can be done however with a small 3VA PCB transformer and 7812.
Check out the HA4061-AL. I ran some calculations on that core and it was close to what you are asking. Only trouble is that this core doesn't have the customary 12Vdc winding for feeding the primary controller, so you are left with building yet another supply that is mains referenced for running something like a UC3843.
Can be done however with a small 3VA PCB transformer and 7812.
Would it be hard to make a line powered SMPS based on SG3525?
I can say this module will actually power a stereo 30W tube amp without issue (heatsink the FETs).
https://www.aliexpress.com/item/4001133292560.html
From the listing:
I don't need it to be smart 🙂
I can say this module will actually power a stereo 30W tube amp without issue (heatsink the FETs).
https://www.aliexpress.com/item/4001133292560.html
From the listing:
Tips:Our products do not provide any form of technology.
LMAO! Isn't that just fantastic?!I don't need it to be smart 🙂
Yeah well, line powered SMPS are really hard to implement properly.
You are better of buying a second hand Delta Electronika unit for 800USD or so that can do 300V 4A. I had one of those and they are indestructible.
You are better of buying a second hand Delta Electronika unit for 800USD or so that can do 300V 4A. I had one of those and they are indestructible.
Not exactly, Linear L2 TO-247 fets max out at 75W due to the TO247 package limitation. For 1200W you would have 1.5KW in and a 2000VA primary transformer. Now assuming you don't use a SCR or Triac to regulate on the primary side you would have to get rid of 1.5KW worst case.
The Fets alone would run 20x7.5=150USD if you want it variable between zero and 320V or so. Add 200USD for a cooling tunnel, 100 USD for an 19'' Enclosure. And about 3-400USD for the transformer.
You can build it cheaper if you use foldback current limiting.
At that price point for the parts of building a linear supply capable of that kind of power. One can see that 700-800USD for a second hand switch mode power supply made by one of the best if not the best manufacturer in the field is the most convenient choice.
Edit: your original requirement was for 320V 2A that, that could be done if you use foldback current limiting on the supply. But the cooler would be some cooling tunnel.
The Fets alone would run 20x7.5=150USD if you want it variable between zero and 320V or so. Add 200USD for a cooling tunnel, 100 USD for an 19'' Enclosure. And about 3-400USD for the transformer.
You can build it cheaper if you use foldback current limiting.
At that price point for the parts of building a linear supply capable of that kind of power. One can see that 700-800USD for a second hand switch mode power supply made by one of the best if not the best manufacturer in the field is the most convenient choice.
Edit: your original requirement was for 320V 2A that, that could be done if you use foldback current limiting on the supply. But the cooler would be some cooling tunnel.