Hi all,
New to the forum and new to designing circuits and PCBs. I'm working on a project and I can't seem to figure out how exactly how to do what I'm trying to do. I'm hoping one of you can give me a hand understanding the concept behind a few things I just can't seem to wrap my head around. (P.S. Sorry if this isn't the right place to post this).
Basically, I'm designing a PCB for something that is battery powered but it's in a really tight space so it can't be removed for charging, it has to be charged in its spot. I have some 3.7v 18650 batteries that I am charging off of a TP4056. The batteries are constantly connected to their load and so I need to make a circuit that disconnects their load when the 5v is applied for charging. I'm told a MOSFET will do what I'm thinking but I can't seem to figure out exactly how.
The main thing that is throwing me off about this is how and where the v- comes into play. I've really never dove into this world but now that I have to here I am asking for assistance.
Ultimately this is a much larger design and this circuit has to be repeated 4 more times. (I need to fit this design in a pipe that is only 1.25" in diameter so it's about 7.5" total length after connecting (5) 18" PCBs.
Any advice is appreciated!
New to the forum and new to designing circuits and PCBs. I'm working on a project and I can't seem to figure out how exactly how to do what I'm trying to do. I'm hoping one of you can give me a hand understanding the concept behind a few things I just can't seem to wrap my head around. (P.S. Sorry if this isn't the right place to post this).
Basically, I'm designing a PCB for something that is battery powered but it's in a really tight space so it can't be removed for charging, it has to be charged in its spot. I have some 3.7v 18650 batteries that I am charging off of a TP4056. The batteries are constantly connected to their load and so I need to make a circuit that disconnects their load when the 5v is applied for charging. I'm told a MOSFET will do what I'm thinking but I can't seem to figure out exactly how.
The main thing that is throwing me off about this is how and where the v- comes into play. I've really never dove into this world but now that I have to here I am asking for assistance.
Ultimately this is a much larger design and this circuit has to be repeated 4 more times. (I need to fit this design in a pipe that is only 1.25" in diameter so it's about 7.5" total length after connecting (5) 18" PCBs.
Any advice is appreciated!