Hi there!
I am trying to design a system to charge an aux AGM battery from a vehicles alternator. When the AGM battery is flat it will draw a large current when connected to the running alternator. To protect the alternator from damage, I would like to limit the current draw from the AGM battery to around 60A or so. The alternator's output is regulated at 14.2VDC.
What would the easiest/best way be to implement such a current limitation?
I have looked at a circuit involving 2 transistors and 2 resistors (**broken link removed**), but I'm worried about the power dissipation that might be involved in the sense resistor (0.6V x 60A = 36W).
If you clever people could just give me some direction it would be great!
I am trying to design a system to charge an aux AGM battery from a vehicles alternator. When the AGM battery is flat it will draw a large current when connected to the running alternator. To protect the alternator from damage, I would like to limit the current draw from the AGM battery to around 60A or so. The alternator's output is regulated at 14.2VDC.
What would the easiest/best way be to implement such a current limitation?
I have looked at a circuit involving 2 transistors and 2 resistors (**broken link removed**), but I'm worried about the power dissipation that might be involved in the sense resistor (0.6V x 60A = 36W).
If you clever people could just give me some direction it would be great!