Let every maker create his own cheap digitally controlled workbench power supply
Already have an account? Log in.
To make the experience fit your profile, pick a username and tell us what interests you.
Most of a workbench power supplies designed by hobbists and makers use the next topology
Pontiometers are used for setup current and voltage. Sometimes it's OK. But sometimes, when you need adjust voltage or curren precisely it's not the best idea to use resistive potentiometers.
You can replace few components in this circuit by one MCU and you get somthing like this
In this way you can add digital control even to the power supply based on LM317
Can confirm this from my experiments as well.
What's a better part these days?
Hi Oleksiy.
I am struck by your project. If you need a partner I can be useful.
I have experience working with some SoC ST. I have also worked with PCB design including power supply with buck converter. Could help with the design of the PCB.
OLEKSIY
hesam.moshiri
Lithium ION
skrodahl
bjorn
FYI: ACS712 is a horrible part. It is noisy so the resolution is low and it is End of Line.
https://hw-by-design.blogspot.com/2018/08/psu-chinese-current-sensing-modules.html