question about dual coil setups

[Cremater]

So I have an igo w3 RDA that I am running dual micro coils in. I am studying up on the safe way to build coils but I cannot seem to find information on if these coils would be inseries or parallel.
The base has 4 coil posts and a single positive post in the center. So which is it, series, parallel or something else altogether? Or am I totalling not seeing the obvious here?
Any help would be great, thanks.

 

[Baditude]

Because both coils are connected to the same positive post, they would be considered series. The ohm meter takes its resistance reading from the center post.

Two 1.2 ohm coils together will read out as a 0.6 ohms on a meter. Remove one of those coils and the meter will read 1.2 ohms.

 

[Cremater]

Ah, thank you so much baditude. I have been racking my brain over this for hours lol.

 

[The Ocelot]

Welcome Cremater!

Nifty name.

 

[furie4]

Welcome Baditude. RDA's are great for flavor/dripping. Just keep the ohm's at 1.5 or above. You can go lower but only if you're using an unregulated mechanical mod

 

[Bunnykiller]

Because both coils are connected to the same positive post, they would be considered series. The ohm meter takes its resistance reading from the center post.

Two 1.2 ohm coils together will read out as a 0.6 ohms on a meter. Remove one of those coils and the meter will read 1.2 ohms.

you lost me on that one Bad...... series?? when both coils are set up with one lead each going to positive and the other leads go to neg makes it parallel ( - post ---coil---+post----coil--- -post ), series is ( -post ---coil------coil----+post)

get some rest Baditude... those 2 am postings are gettin to ya

 

[Bunnykiller]

lol just a thought.. a single 7 wrap coil is actually 7 single wrap coils in series

 

[realsis]

I thought dual coils run in parallel, not series??? One lead each going to the same positive post. Now I'm confused...

 

[slappy3139]

All atty coils connect to same positive and same negative (ground), so it is a parallel circuit inside of your atty. A series circuit has a series of resistance loads between the positive and negative terminals, ie your mod and it's switches and contacts are in series with your atty, that's why you have voltage drop.

 

[slappy3139]

Because both coils are connected to the same positive post, they would be considered series. The ohm meter takes its resistance reading from the center post.

Two 1.2 ohm coils together will read out as a 0.6 ohms on a meter. Remove one of those coils and the meter will read 1.2 ohms.

Er, actually Bad, you just described a parallel circuit[emoji2]

 

[Shootist]

you lost me on that one Bad...... series?? when both coils are set up with one lead each going to positive and the other leads go to neg makes it parallel ( - post ---coil---+post----coil--- -post ), series is ( -post ---coil------coil----+post)

get some rest Baditude... those 2 am postings are gettin to ya

Yeah Bad got that one completely wrong. It is NOT in Series!!!!!!!


It is in Parallel.

So to the OP if each of your coils read the same resistance, whether they are both 1 ohm or 1.5 ohm, you HALF that for a final, END, resistance. So two 1 ohm coils in parallel would be .5 ohms as read/seen by the Mod. And two 1.5 ohm coils would be .75 ohms.

 

[Bunnykiller]

I thought dual coils run in parallel, not series??? One lead each going to the same positive post. Now I'm confused...

dual coils are "normally" set up in parallel to get the lower ohms needed for hi wattage on a mech... but you can set them up in series mode for increased resistance, but that is counter intuitive for mechs....

 

[Cremater]

I hadn't had time to get back to this thread until now, but I did realize Baditude's mistake on if it was series or parallel during a practice build when I hooked it up to an ohm meter. The resistance was cut in half and so I knew it was actually in parallel rather than series.
Glad so many others caught that as well. I am ESPECIALLY glad that I have an ohm meter and am doing quite a few practice builds on a base before I even think of firing one. I was looking to build a 1.8 ohm circuit and so built two .9 ohm circuits (poorly) and came out with a .3ohm build.
Lesson learned, even if you think your getting good advice, check and double check before you fire it!

Thanks all!