Electronics > Beginners

Is it ok to use two step downs in parallel?

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jeroen79:

--- Quote from: Sway07 on October 17, 2021, 12:34:06 pm ---Again I'm really sorry for asking stupid questions, but is there a benefit to having all grounds tied together? Or is it fine to have the input grounds tied together and have the outputs grounds separated
--- End quote ---
Depends on what exactly you want to make.
Often when parts of a circuit communicate with each other it will by something referenced to ground.

Sway07:

--- Quote from: jeroen79 on October 17, 2021, 01:13:28 pm ---
--- Quote from: Sway07 on October 17, 2021, 12:34:06 pm ---Again I'm really sorry for asking stupid questions, but is there a benefit to having all grounds tied together? Or is it fine to have the input grounds tied together and have the outputs grounds separated
--- End quote ---
Depends on what exactly you want to make.
Often when parts of a circuit communicate with each other it will by something referenced to ground.


--- End quote ---
The only communication between the two will be with a HDMI cable. I want to make a sort of a laptop powered by a RPI 400. So my goal is to power both the RPI 400 and the repurposed screens controller board from the 16 or so volts the charger provides.
I used to use two power adapters and I wanted to improve it by only using one. I also want to add two power banks in the future to make it fully portable. But that is a job for future me to handle :D

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