Another PD4045 question

[noseoil]

I got the power panel yesterday & labelled the pigtails sticking out the back for later on, so I know which fuse works for which circuit. I was using a multi-meter to test resistance at the fuse holder & bare wire end for labels.

One thing I'm curious about, I tested continuity at the battery connections ("power in" minus & plus) and was surprised to see continuity between the hot & ground. The battery "in" lug (hot-black) is the one with the buss bar attached. The one immediately to the left of it is labelled "battery negative" (white) in the picture with the three lugs in a row on the board. Just wondering why there would be any connection between these lugs, as I would expect a "0" between hot & ground at the battery input. What am I missing here?

[Dale M.]

What was meter reading (value).... What you were probably seeing was resistance feedback through components, its a common factor in electronics.... Usually through voltage reference and control circuits....

You can probably take any device and remove batteries and put ohm meter across battery terminals and get some sort of reading (with switch on if it has one), there is truly no totally "open" circuit between battery terminals in electronic devices unless it has internal off/on switch and even then maybe not ...

Dale

[noseoil]

Dale, thanks for this explanation. I checked it again & found a slight continuity in one direction, but not in the other, so I think your guess is correct. I must have been measuring the residual resistance within the circuitry, not a short to ground as was my concern. My knowledge of electronics is extremely limited as you can see. All's well that ends well. Thanks again. tim

[Kharn]

You had to label the pigtails? Mine were printed with 001 to 012 depending on which fuse they corresponded to, not the easiest to see, but it was there.

[JeffofCT]

Does the PD 4045 act as a converter from 12v DC to 120V AC when not plugged into shore power?

[Kharn]

Does the PD 4045 act as a converter from 12v DC to 120V AC when not plugged into shore power?

No, it is solely AC to DC.

[GuitarPhotog]

Does the PD 4045 act as a converter from 12v DC to 120V AC when not plugged into shore power?

The device to change 12 VDC to 120 VAC is called an Inverter, just to keep the nomenclature straight.

<Chas>

[JeffofCT]

Does the PD 4045 act as a converter from 12v DC to 120V AC when not plugged into shore power?

The device to change 12 VDC to 120 VAC is called an Inverter, just to keep the nomenclature straight.

<Chas>

Sloppy on my part. I know.