Hello,
this is my first post. I’ve discovered this forum years ago and gained lots of helpful information here. Thank you!
Maybe someone can advise me on this matter:
For education purposes I need mono or stereo amplifier modules that I can customize a bit for my needs.
I've decided to try this with the TPA3250. I've found some inexpensive assembled boards on the internet.
Now I'm looking for a suitable DC power supply, in the range of 18 - 30V and ~ 4A.
I'd prefer using a linear power supply instead of a switching PSU. But I'm also open to recommendations for quality switching PSU.
For me it's more important to keep it not too expensive because it is needed in a medium quantity (8 - 16 pcs.) for experiments with unconventional speaker setups, exciters/shakers, in the context of sound art installations.
Is there anything pre-built based on - for example - the LM338 or something similar? Or can anyone recommend and point out a schematic/layout from an open hardware manufacturer. There is probably already something written here that might help me with me questions.
Thank you very much.
this is my first post. I’ve discovered this forum years ago and gained lots of helpful information here. Thank you!
Maybe someone can advise me on this matter:
For education purposes I need mono or stereo amplifier modules that I can customize a bit for my needs.
I've decided to try this with the TPA3250. I've found some inexpensive assembled boards on the internet.
Now I'm looking for a suitable DC power supply, in the range of 18 - 30V and ~ 4A.
I'd prefer using a linear power supply instead of a switching PSU. But I'm also open to recommendations for quality switching PSU.
For me it's more important to keep it not too expensive because it is needed in a medium quantity (8 - 16 pcs.) for experiments with unconventional speaker setups, exciters/shakers, in the context of sound art installations.
Is there anything pre-built based on - for example - the LM338 or something similar? Or can anyone recommend and point out a schematic/layout from an open hardware manufacturer. There is probably already something written here that might help me with me questions.
Thank you very much.
A simple transformer, rectifier and smoothing caps is easiest way.
Although transformers can be quite expensive now.
An SMPS just uses a small transformer but is a bit more complex.
Ali express, ebay, RS Components, Farnell are good places to start.
Although transformers can be quite expensive now.
An SMPS just uses a small transformer but is a bit more complex.
Ali express, ebay, RS Components, Farnell are good places to start.
Just use a laptop power brick.
Dead cheap.
Unless you find you need more than 20V - try one first.
Otherwise, the Meanwell supplies seem to be popular.
It is not usual to regulate a power amp supply.
Dead cheap.
Unless you find you need more than 20V - try one first.
Otherwise, the Meanwell supplies seem to be popular.
It is not usual to regulate a power amp supply.
Thank you for your reply.
I couldn't check the TPA2350 board's circuitry yet since they are still out on delivery. The seller gave no further documentation so far.
So there is no further voltage regulation on the PSU side necessary?
I couldn't check the TPA2350 board's circuitry yet since they are still out on delivery. The seller gave no further documentation so far.
So there is no further voltage regulation on the PSU side necessary?
OK. Didn't know that. I'm more into synthesizer electronics.
So I'll try and use a power brick first or Meanwell. Maybe I'll also test additionally with a simple unregulated transformer-rectifier-capacitor-circuit.
Thank you both for your replies. It's very helpful to be able to carry on so quickly.
I've done exactly that experience recently with a generic TPA3255 board. I tried a 90W laptop charger from Lenovo - sounded dull and lifeless. Then I switched to a linear power supply from Teddy Pardo, it sounds fantastic.