oliverb
Member
I need to build a battery backup circuit for my Oregon WMR 928 weather station.
The weather station itself runs at 12v max 300mA and the weather server runs at 5v max 800mA.
I would like to run it from a 12v sealed lead acid battery so the circuit must have trickle charge built in for this type of cell.
I first thoughts are to get rid of the 2 ac adaptors that came with the devices and build a new combined 12 & 5v PSU using voltage regulators. The trouble is where do I connect my battery?
Have uploaded a pic of my basic thoughts without any major details.
Any ideas, suggestions or circuits would be appreciated.
Brett
The weather station itself runs at 12v max 300mA and the weather server runs at 5v max 800mA.
I would like to run it from a 12v sealed lead acid battery so the circuit must have trickle charge built in for this type of cell.
I first thoughts are to get rid of the 2 ac adaptors that came with the devices and build a new combined 12 & 5v PSU using voltage regulators. The trouble is where do I connect my battery?
Have uploaded a pic of my basic thoughts without any major details.
Any ideas, suggestions or circuits would be appreciated.
Brett