So Ive decided to go toroidal for my PSU for my soon to be DIY amp- I am fresh meat new know basically nothing. I found a transformer with proper V and A i need 40V 5A X2 so I can power two boards with it.. But I am having four boards in one chassis- 8 channels of amplification total.
I have seen many multichannel amps with this set up of two transformers- so can someone help an idiot out and explain or show how to do this simply. If i could find one that was 40V 5A with 4 outputs id just use that to make it easy but I haven't yet and im on a budget,
https://www.antekinc.com/as-4440-400va-40v-transformer/
I have seen many multichannel amps with this set up of two transformers- so can someone help an idiot out and explain or show how to do this simply. If i could find one that was 40V 5A with 4 outputs id just use that to make it easy but I haven't yet and im on a budget,
https://www.antekinc.com/as-4440-400va-40v-transformer/
The transformer has 2 off 40V AC outputs.
So make two supplies of 55 volts DC and use two amps per power supply.
Thats assuming each amp is 55 volts DC single rail.
If amps are 55 volts dc dual rail then:
Put transformer 40vac outputs in series and make a split rail supply to supply all your amps.
So make two supplies of 55 volts DC and use two amps per power supply.
Thats assuming each amp is 55 volts DC single rail.
If amps are 55 volts dc dual rail then:
Put transformer 40vac outputs in series and make a split rail supply to supply all your amps.
@nigelwright7557 basically everything you just said went over my head. I am new- just starting out, I believe the amps im going to use will need 40V 5A for proper power each the transformer i found has this X2 so two boards. I would have to use two PSU to power all 4 boards. This part im confused- Do I wire both transformers up the same way to mains wire ? IS there a special way to wire them so I can have my 4X 40V 5A?
These are the boards im using or similar
https://www.aliexpress.us/item/3256...!sea!US!3186929557&curPageLogUid=75EAid3hB5Ya
These are the boards im using or similar
https://www.aliexpress.us/item/3256...!sea!US!3186929557&curPageLogUid=75EAid3hB5Ya
As I am understanding what you have shown, I would say that 1 transformer can give 2 of the boards shown power, equaling 4 channels of audio for your system. Since you need twice as many channels, get one more transformer and do the same thing with it.
Nigel, Am i assuming wrongly that 40 volt secondary out would not be 'handled' by the input of the amp board? If that is so, then a lower voltage must be used.
Nigel, Am i assuming wrongly that 40 volt secondary out would not be 'handled' by the input of the amp board? If that is so, then a lower voltage must be used.
The boards expect DC input and you are buying just a transfomer?
If this confuses you I would suggest you do a bit of reading first - in all honesty it is also the best way to stay within your budget because it will prevent you from damaging any components (or yourself, your house or something similar).
If this confuses you I would suggest you do a bit of reading first - in all honesty it is also the best way to stay within your budget because it will prevent you from damaging any components (or yourself, your house or something similar).
@nigelwright7557
Please excuse my stupidity- 1200VA transformer im seeing would be $500USD+ way outside the scope of my budget,
Im open to other suggestions- I was trying to find a switching PSU but like I mentioned above Im still having issues find one.
I just want to power 4 boards one chassis one power cord
Please excuse my stupidity- 1200VA transformer im seeing would be $500USD+ way outside the scope of my budget,
Im open to other suggestions- I was trying to find a switching PSU but like I mentioned above Im still having issues find one.
I just want to power 4 boards one chassis one power cord
Thanks Nigel, I should have been more clear in my writing! AC/DC what's the difference?🤣 So anyway, yes it would be best just to get the beefy transformer that is needed in the first place and have it right from there. Just yesterday, I was looking at the AMB 011 power supply with 4 DC outputs, but I didn't notice the amp rating because I didn't need much of an amperage to begin with, and only one DC output at that (single rail).
Ill try to find one at 45v 8a- the smps I have found are "bricks" and have 3 pairs +/- one shy of what I need.
You can use this PSU, connect the DC output wires to a pair of terminal bus bars for more connections.
Since you only need 4 pairs of +/- connections, you can even use these connectors instead of bus bar.
wire connector
wire connector
O damn! I was about ready to throw an adult tantrum and give up. Head is killing me trying to get this started.
Can some just tell me simply how do I add two Toroidal to one chassis so I only need one power cord? The one I linked has two pairs inputs 115v I believe for one I just tie red red black black for 115v hot and neutral do I do the same with second one...
I share your feeling about all those wires coming together, but to keep it simple, yes, the wiring for the second transformer would be identical to the first. In this case, I would be tempted to use a buss bar just so that there isn't so much copper to deal with at any one point.