Battery or computer power supply for bench harness?
#1
On The Tree
Thread Starter
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I need to build a bench harness for my e38 ECM. There's oodles of computer power supplies sitting around, and those have a 12v output on certain wires. Would you use one of those, or would I be a lot better off using a 12v lantern or car battery?
Personally, I'd rather use the computer power supply, just for simplicity and low cost. But if there's any problem with electrical noise and inconsistency, I'd like to know that before I regret it.
Personally, I'd rather use the computer power supply, just for simplicity and low cost. But if there's any problem with electrical noise and inconsistency, I'd like to know that before I regret it.
The following users liked this post:
kipps (09-21-2020)
#3
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I would use a battery long before I would use a switching supply like in a computer. Just put a battery tender on it, you could even use a garden tractor or motorcycle battery. Personally I use a wall wart most of the time because of its portability but it is a quality one, that I did put an O-scope on and looked at the output and ripple
The following users liked this post:
kipps (09-25-2020)
The following users liked this post:
kipps (09-26-2020)