bryan1
Well-Known Member
Hiya Guys,
Well I've just about finished my new RE power board for the shed. I've madeup the K241 from Oatleys ( a wind genny controller) for my f&p genny and i've made my own 24 volt shunt regulator for the PV. Now the K241 has 2 led's, 1 for when the genny is charging and the second for when the genny is dumping the load. My PV shunt reg has a led to show when its dumping so now I just need a led to show when the pv is charging.
On reading up on opamps I reckon a low-side monitor would fit the bill, but I'm pretty green when it comes to opamp design, well on a new circuit I haven't encountered before. On reading a maxim app note(746) I reckon the below schematic would be the one to use. The app note does go on about high side switching but basically all I want when the PV start charging switch a led on simple.
The opamp can be powered from my nife bank (15 volts) and is totally isolated to my 24 volt batterybank. The resistor values are really only a guess as I dont have any formula to work with so if you guys could offer some help on this It will be appreciated.
Cheers Bryan
Well I've just about finished my new RE power board for the shed. I've madeup the K241 from Oatleys ( a wind genny controller) for my f&p genny and i've made my own 24 volt shunt regulator for the PV. Now the K241 has 2 led's, 1 for when the genny is charging and the second for when the genny is dumping the load. My PV shunt reg has a led to show when its dumping so now I just need a led to show when the pv is charging.
On reading up on opamps I reckon a low-side monitor would fit the bill, but I'm pretty green when it comes to opamp design, well on a new circuit I haven't encountered before. On reading a maxim app note(746) I reckon the below schematic would be the one to use. The app note does go on about high side switching but basically all I want when the PV start charging switch a led on simple.
The opamp can be powered from my nife bank (15 volts) and is totally isolated to my 24 volt batterybank. The resistor values are really only a guess as I dont have any formula to work with so if you guys could offer some help on this It will be appreciated.
Cheers Bryan