I have a few extra - laying around - power supplies that once were used to power cable boxes and the likes. they're in-line boxes that plug into 120 VAC and provide a steady regulated 12 VDC. One I have in hand at this moment is rated 100 ~ 120 VAC input; 12 VDC @ 2.67 amps Output. Amperage is not going to be my concern here. I want to provide 13.6 volts to maintain a car battery at float voltage.
I'd like to modify this by doing something to the circuitry. But have no idea (first) if it's easy enough to do and (second) if it's wise or unwise.
The box does not have screws, so I'll need to crack the case open one way or another. Haven't done that yet, but am willing if y'all think this is a possibly worth while endeavor. If not - I have a couple 18 VDC 1.1 amp boxes (comes from old printers) I suppose I could regulate down to 13.6 volts if need be. But I'd rather go with the higher amperage unit. Likely changing the voltage will lower the amperage, again, this is not the most important part of this project.
My goal: To keep a bench top car battery (in the garage) charged to normal operating voltage. I may run a car radio off of it - I may run some other electronics meant for automotive use. Having the necessary voltage would solve the problem of throwing a car battery charger on the battery and charging it up then disconnecting when done.
I'd like to modify this by doing something to the circuitry. But have no idea (first) if it's easy enough to do and (second) if it's wise or unwise.
The box does not have screws, so I'll need to crack the case open one way or another. Haven't done that yet, but am willing if y'all think this is a possibly worth while endeavor. If not - I have a couple 18 VDC 1.1 amp boxes (comes from old printers) I suppose I could regulate down to 13.6 volts if need be. But I'd rather go with the higher amperage unit. Likely changing the voltage will lower the amperage, again, this is not the most important part of this project.
My goal: To keep a bench top car battery (in the garage) charged to normal operating voltage. I may run a car radio off of it - I may run some other electronics meant for automotive use. Having the necessary voltage would solve the problem of throwing a car battery charger on the battery and charging it up then disconnecting when done.