Hello,
I am working on my first DIY amplifier (class D) and I am sure how to split power supply.
The three stage of my 5.1 amp are :
I am still at a stage where I test component channel per channel, so I don't know if all channel with one toroidal transformer (for preamp) is viable ?
Bonus question : How do you know the power requirement of preamp ? I took a 50VA transformer by pure guessing.
Thank you.
I am working on my first DIY amplifier (class D) and I am sure how to split power supply.
The three stage of my 5.1 amp are :
- 3x NE5532 preamp board : One toroidal 12-0-12 transformer wired in parallel.
- 3x TPA3116 amp board : One 24VDC SMPS wired in parallel.
- 3x UPC1237 protection module : One 24VAC transformer with three separate winding.
I am still at a stage where I test component channel per channel, so I don't know if all channel with one toroidal transformer (for preamp) is viable ?
Bonus question : How do you know the power requirement of preamp ? I took a 50VA transformer by pure guessing.
Thank you.
You can always run multiple supplies off one transformer. I think the SOTA today is to run a seperate pair of mini regulators for each individual chip.
Three 5534s at a typical 4mA each needs around 12 mA or so of current, or <0.5VA, so unless I'm missing something your 50VA guess has them covered by 100 times or so.
Three 5534s at a typical 4mA each needs around 12 mA or so of current, or <0.5VA, so unless I'm missing something your 50VA guess has them covered by 100 times or so.
Ok thank you.
So I should have no problem running the three 5532's in parallel with the same toroïdal.
I still doesn't understand well which components need to be separate and which can have common power. At first, my 3 UPC1237 were on the same transformer's winding in parallel and they didn't seem to enjoy it... It fried a TPA3116 board, it look like the AC had flow to the output of the amp board.. I have never worked with alternative current in electronic before (I am not an expert in electronic anyway).
So I should have no problem running the three 5532's in parallel with the same toroïdal.
I still doesn't understand well which components need to be separate and which can have common power. At first, my 3 UPC1237 were on the same transformer's winding in parallel and they didn't seem to enjoy it... It fried a TPA3116 board, it look like the AC had flow to the output of the amp board.. I have never worked with alternative current in electronic before (I am not an expert in electronic anyway).