I was curious about this. I've searched other similar questions but they weren't quite the same. One mentioned the use of diodes but I would like to know if this would work first before adding diodes.
Can I hook 1 device (12v) to 2 different power sources supplying 12v each.... Would this fry the device?
Scenario: I have a 12v led light strip. It's currently hooked up to a 4.2v li-on battery hooked up to a transformer that outputs 12v. This circuit has an on/off switch.
Now i want to add a dc input to the light strip also. The dc adapter will be supply 12v directly to the light strip (bypassing the transformer).
I was wondering, if this dc power source is already supplying the 12v to the light strip, and i turned on the battery power source, would this fry the device? or would it still be a total of 12v going into the device and is safe to use? Which power source would it be pulling from, maybe split between both? What if both power sources are identical in voltage and amps?
Thank you, i'm afraid to experiment with this to see what happens haha.