Dumb battery question

McCracken

McCracken

Logan Can't See This
Joined
Jul 9, 2005
Location
With your mom at a nice seafood dinner
I have 4 D batteries set up in this order. What should the voltage be?

Screenshot_20170807-162716.png
 
shawn said:
Get rid of the line at the top of the page going back to the device. Then the voltage between the two bottom lines should be 6V.

As it's drawn, it looks like it might catch fire.
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Agreed. The fuck is going on there?
Anyways, series circuit you add the voltage and parallel you add the current, pretty much...
If they are all nut to butt you're getting 6v.
 
McCracken said:
Fine damn it . I'll just have to take a picture of the actual device. It does have three wires though. One common at the top and the bottom two are split between the two rows.
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The bottom bus bar should likely be divided, then you'd have a 6 volt string with a 3 volt center tap. The two wires at the bottom of the drawing would be ground and 6V.
 
6 vdc between the 2 wires at the bottom.
3 vdc between the bottom right wire and the top wire.***

**Im guessing a bit here because I cant see the back side of the top connection bar
 
Ron said:
6 vdc between the 2 wires at the bottom.
3 vdc between the bottom right wire and the top wire.***

**Im guessing a bit here because I cant see the back side of the top connection bar
Click to expand...
This.

somebody was clever and wanted access to both 3v and 6v w/o having a resistor later.
So the answer is: There are 2 answers.

The beauty of DC. "ground" is relative.
Think of it like Brown = Ground, Black #1 = 3v, Black #2 = 6v.

But you can also get 3v by comparing black to black o_O

The better question is, who the fawk let this guy use 2 wires the same color for 2 different voltages.
 
That's basically how CUCVs get 12v and 24v on the same truck.
 
Alright you bunch of grab asses. This is from one of my childhood toys. It's Robotix!

hbxjmpf48cnx3jlshpla.jpg


The problem is that the motors won't work. I connected everything and it's trowing 3.2V. I was wondering if maybe it wasn't throwing enough at the motor to turn it.
 
Clean the corrosion off of the terminals with a torch :flipoff2:

Do the motors turn freely?

Nominal voltage on a D Battery is 1.5, but I'd guess it should be closer to 2 volts if its a "good" battery. What voltage is it putting out under load?
 
I had one of those.
The motors sucked ballz. Wimpy.

Where are you measuring from, and is it w/ any kind of load?
As mentioned, do the motors spin freely?
 
RobMcBee said:
lol he said batteries are for amateurs....

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Shoulda used a hedge trimmer motor so that it would reciprocate. But hey, happy wife, happy life, right?
 
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