Ok to run shore power without battery?

wa8yxm wrote:


I'd need to haul some serious test gear into his rig to make an "Diagnosis" but.


so his 12 volts... might just be poor filtering of a supply with lots of ripple. Or it may be a very smart converter that says "Well I do not sense a battery so I'll go with the lower voltage"

not really a simple multimeter would do, if you really wanted to see a wavelength a simple oscilloscope will work.

He told us the model number and that's what that converter is supposed to put out as an output, from the manufacture, with no battery. We are not talking generics here but rather an actual test procedure from the manufacturer for that model.

but why the heck are we talking about RMS here, that is to get the average power from an ac power form and compare it to a DC voltage, there is no DC RMS, we do get DC ripple that is introduced from components and old unfiltered systems when they are plugged in or failing but that usually presents as a higher or lower overall voltage, and same thing you need a oscilloscope to see the ripple, so a manufacture isn't going to use that as a simple test the consumer can do as while you don't need an expensive one not many people have purchased a oscilloscope for their home tool box.