Older Folks and Vaping Front Porch - Part 2
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Still don't grasp the difference in an arty between parallel dual and series dual.
I think you may have explained once but i probably was trying to picture it then may have seen a device or so on a page and started to look at that.
Or as usual other thoughts were swirling around.
Here are two coils in series:
2Ohms + 2Ohms = 4 Ohms
Here are two coils in parallel:
1 / (1/2 Ohms + 1/2 Ohms) = 1 Ohm (simple case: 2Ohms / 2 = 1 Ohm)
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Sorry, I received a warning from admin. I think I may just boot myself from the forum. Or refrain from posting.
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Are you kidding, or did you really receive a warning about something?
I'm sending you a Private Message, because one of the rules is that we're not supposed to discuss administrative policies that are "off topic" to the discussion.
Thanks PapaSloth but as usual Im not getting how that translates to posts on an atty.
Do you have one positive and a negative = or one positive and two negatives = or two positives and two negatives ?
The wire ends have to go one end to a positive and one to a negative ?
So a set up i have two coils - both ends of the wire going to one positive and one negative each so its parallel - Well the were two 1Ω and came out at 1Ω total.
Not sure (not that i want to just wondering ) how a series circuit in that set up would be made.
Do I have two wires going into the same negative post and the other ends going into the same positive post ?
Do you have one positive and a negative = or one positive and two negatives = or two positives and two negatives ?
The wire ends have to go one end to a positive and one to a negative ?
So a set up i have two coils - both ends of the wire going to one positive and one negative each so its parallel - Well the were two 1Ω and came out at 1Ω total.
Not sure (not that i want to just wondering ) how a series circuit in that set up would be made.
Do I have two wires going into the same negative post and the other ends going into the same positive post ?
All positive posts are wired together and all negative posts are wired together, so it doesn't really matter how many of them you have.
If you wanted to wire them in series with only two posts, it would look like this:
The two 2Ω coils are joined to each other and then one end to a negative and the other end to a positive that makes it series.
So for the parallel you divide one by the other ,,, its not half of one plus half of the other ?
I thought my two 1Ω was 1/2 = 1/2 = 1 but that doesn't work for the 2Ω + 2Ω = 1Ω or it would be 2Ω.
So for the parallel you divide one by the other ,,, its not half of one plus half of the other ?
I thought my two 1Ω was 1/2 = 1/2 = 1 but that doesn't work for the 2Ω + 2Ω = 1Ω or it would be 2Ω.
Also, take a look at this. This is the only way to wire two 1Ohm coils and get a 1Ohm result:
Current only flows from red to black, so only one coil is actually in the circuit. No current flows through the other coil, so you can remove it completely without making any change to the setup.
Current only flows from red to black, so only one coil is actually in the circuit. No current flows through the other coil, so you can remove it completely without making any change to the setup.
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So, if I wanted to build 2 coils in series using one positive and 2 negative posts, I could put one coil between the positive and one of the negative posts, then another coil from that negative to the 2nd negative post. Is that right?
Two 1Ohm coils in parallel should total to 0.5Ohms, and two 1Ohm coils in series should total to 2Ohms. The only way you can combine two 1Ohm coils and get 1Ohm total is if one of them isn't in the circuit (see my picture in the previous message). Here's the actual formula for calculating resistance for parallel coils:
Most of the coils we make for vaping are "balanced" and both R1 and R2 are the same value. So, it usually works out that you can just divide R1 by 2 to get the resistance for dual coils in parallel, but the formula is more general than that. For example, if you had a 1Ohm coil in parallel with a 3Ohm coil, the total resistance would be 1(1/1 + 1/3), which is 0.75Ohms.
I think you're over-thinking this, Wolf.
If the coils are in series, you add them to each other. (Although why you'd want to is beyond me. Why fasten two 2Ω coils together to get 4 Ω when you can just wind a 4 Ω coil?)
If the coils are in parallel AND essentially the same resistance, divide by the number of coils - i.e. 2. So yes, your two 1Ω in parallel should be 1/2 Ω. Any value other than that, and you have a wiring error.
If the coils are in series, you add them to each other. (Although why you'd want to is beyond me. Why fasten two 2Ω coils together to get 4 Ω when you can just wind a 4 Ω coil?)
If the coils are in parallel AND essentially the same resistance, divide by the number of coils - i.e. 2. So yes, your two 1Ω in parallel should be 1/2 Ω. Any value other than that, and you have a wiring error.
I'm afraid not, only one coil will be live:
To wire them in series, just ignore one of the negative posts entirely, and wire it like this:
Yeah, I noticed retired1 did a lil' edit on your other post. But hey, ya must be special in dat da mods normally delete da whole 'offending' post!
Tried to warn ya'll!
Stick 'round and wear out dat rocker!
Honestly, don't let it bother you Canno, and don't let it stop you from posting. I went my whole life without every getting warned or banned on a discussion board, but I picked up two warnings during my first two weeks here (frankly, I'm surprised it was only two). If they really REALLY meant you to stop, they'd start giving you infractions instead of warnings. A warning is just a friendly nudge.
I'm afraid not, only one coil will be live:
To wire them in series, just ignore one of the negative posts entirely, and wire it like this:
OK. So, the little circle in the middle here:
is NOT a negative post. That's what threw me off.
Thanks.
Now i have no idea how my two coils ended up at 1Ω.
Hang on - ok I know they were 8 wraps each 2.5mm so -- oh wait I used the coil engine dual coils and put resistance at 1Ω and it said 8 wraps and i was thinking each coil was 1Ω and the two together in parallel would get me to 1Ω.
So what was the resistance of each of my two coils to get to the 1Ω total.
Sure this must be easier once you have grasp on it.
Hang on - ok I know they were 8 wraps each 2.5mm so -- oh wait I used the coil engine dual coils and put resistance at 1Ω and it said 8 wraps and i was thinking each coil was 1Ω and the two together in parallel would get me to 1Ω.
So what was the resistance of each of my two coils to get to the 1Ω total.
Sure this must be easier once you have grasp on it.
OK. So, the little circle in the middle here:
is NOT a negative post. That's what threw me off.
Thanks.
Right, the little circle is not actually wired to anything, so it's neither positive nor negative. It's actually at 2.1V, half way between 0V and 4.2V.
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