Hi there
I am wanting to build a new psu for 2 class d amps that I have to get rid of the bricks that I am currently using.
I have seen on eBay and other sites a number of circuits for this purpose that would allow me to mask use of some toroidal transformers I have from older projects.
My questions are as follows...
Can I plug one amp into the +dc and the other into the - dc?
How can I get only + dc out of one of these boards?
Is there a better option?
Look forward to hearing from you.
Neil
I am wanting to build a new psu for 2 class d amps that I have to get rid of the bricks that I am currently using.
I have seen on eBay and other sites a number of circuits for this purpose that would allow me to mask use of some toroidal transformers I have from older projects.
My questions are as follows...
Can I plug one amp into the +dc and the other into the - dc?
How can I get only + dc out of one of these boards?
Is there a better option?
Look forward to hearing from you.
Neil
You'll need to provide more information to get the help you seek. What are the outputs of the bricks you're using, and what are the transformers you have?
Probably not a good idea.
The amps are able to take between 10 and 30 volts dc.
The bricks are 12v 5amp Dc.
I have two toroidal transformers available one at 18volts and one at 24volts off the secondaries.
The bricks are 12v 5amp Dc.
I have two toroidal transformers available one at 18volts and one at 24volts off the secondaries.
So, please correct me if I am wrong...
I parallel up the secondary's to give me a higher current output
Run it through a rectifier to give me dc voltage.
Stick a nice fat smoothing cap across the dc and that's about it.
Is that right?
I parallel up the secondary's to give me a higher current output
Run it through a rectifier to give me dc voltage.
Stick a nice fat smoothing cap across the dc and that's about it.
Is that right?
That's basically it.
You need to keep in mind things like phase when paralleling secondaries, and peak voltage and ripple voltage when smoothing the dc.
You need to keep in mind things like phase when paralleling secondaries, and peak voltage and ripple voltage when smoothing the dc.
Great thanks sofaspud.
Ill keep an eye on the phases but the data sheet has that in.
I have 4 rubicon 10000uF 50v caps kicking around. Do you think they'll do for smoothing?
Ill keep an eye on the phases but the data sheet has that in.
I have 4 rubicon 10000uF 50v caps kicking around. Do you think they'll do for smoothing?
Yes. But be aware that the 24V transformer will likely be over 30V after rectification and smoothing.
I'd would at least start with two. That should be plenty. More could be added if necessary, but then I might try CRC filtering or regulation before that.
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