Constant Voltage Alternators

[boscoe99]

[99yam40]

I have a feeling I was wrong on the phase to phase thing.

it looks like on that plug, the alligator clip would be hooked to ground from that u tube link I posted.
Did you watch that one about the kind of probes?
talks about the 1 M ohm probes being 1X, 10 M ohm being 10 X etc also
back when I was involved in the meter and relay/ testing group was in my 1st years as electrical apprentice.
Early 80s, so I am very rusty on this.

I would hook the probe to the hot wire and see what things look like, and then hook the clip to the ground to see if that cleans it up some

[boscoe99]

I watched both videos. Very informative.

When you mention that plug, are you referring to the picture of the wall outlet? The scope I have has the ground connected to the shield of the BNC cable. Therefore, I don't think the alligator clip needs to be attached when measuring 120 C volts. But we shall see. Will be running some tests this afternoon. Too cold and windy to be doing much outside.

[99yam40]

sorry about that, yes the duplex outlet, not plug

but then an old pug you have laying around you cut off something would be a good way to attach your prob to and shove into that outlet

[99yam40]

well did you hook it up to see if you could see anything?

[boscoe99]

I got it to indicate a sine wave from connecting just the tip of the probe to a hot lead from the wall outlet. Frequency seems to be correct as it is numerically displayed. But the voltage is suspect. It is not displaying a peak to peak or RPM voltage. Just divisions that are set in 50 volt increments. I am seeing a little over three divisions on both the up side and the down side of the wave.

Tried seeing the ripple wave of the 14 DC volt output from a belt alternator. Mumbo jumbo.

I have a lot to learn.