rin67630
Solar Enthusiast
Build from - 4x surplus computer mains adapters 24v / 5A and a DPS 5020 + USB communication module
The 4 mains adapters are connected in a 2P-2S configuration to provide 48V-10A power to the programmable power supply.
This one, being a buck converter, can provide more than 10A at lower voltages e.g. up to 18A at 13,6V.
The DPS 5020 are pretty good and reliable modules that are able to be set up to even very low CC values and maintains these accurately.
Beside that, the power supply can be programmed over an (optically isolated) USB-port.
You may also purchase the Bluetooth variant for a completely wireless communication.
Total BOM cost ~60$
I could purchase the computer mains adapters 24v / 5A for ~$4 each. You probably will find in your vicinity an electronic surplus store, that sells this kind of power supplies for old computers as well. They are very common and of an excellent quality.
The DPS 5020 in the USB communication version is sold at your favorite Chinese outlet for around $40.
The provided PC application is not that exciting, but GitHub is full with corresponding software. In the following weeks I will surely program a battery loader with different charging profiles using a cloud service as a remote display with trend charts to monitor the loading process.
The 4 mains adapters are connected in a 2P-2S configuration to provide 48V-10A power to the programmable power supply.
This one, being a buck converter, can provide more than 10A at lower voltages e.g. up to 18A at 13,6V.
The DPS 5020 are pretty good and reliable modules that are able to be set up to even very low CC values and maintains these accurately.
Beside that, the power supply can be programmed over an (optically isolated) USB-port.
You may also purchase the Bluetooth variant for a completely wireless communication.
Total BOM cost ~60$
I could purchase the computer mains adapters 24v / 5A for ~$4 each. You probably will find in your vicinity an electronic surplus store, that sells this kind of power supplies for old computers as well. They are very common and of an excellent quality.
The DPS 5020 in the USB communication version is sold at your favorite Chinese outlet for around $40.
The provided PC application is not that exciting, but GitHub is full with corresponding software. In the following weeks I will surely program a battery loader with different charging profiles using a cloud service as a remote display with trend charts to monitor the loading process.
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