Resistance

[john john whaur ye gon]

Had a wee go at some ss simple claptons today pleased with. Spent a bit of time, looking at the net, trying to find the resistance of flat ribbon ss, for making if i have the term correct a fused clapton wtih a flat multiple core or a mix with round in ss.then wrap in round ss. Does anyone have anything giving a coil making site like steam engine, that allows calcs with flat ribbon,unless i am doing something wrong i cant find on steam engine,they do have flat but i cant get it into clapton build will have another look or are they the same guge for guage, even if i could find the 0hms per foot i could try and match ribbon sizes to round. Crazy wire size in awg to 25 wondered if that was same resistance as awg 25 round. I have tried various form searches not a sausage.

 

[Richard Winter]

Had a wee go at some ss simple claptons today pleased with. Spent a bit of time, looking at the net, trying to find the resistance of flat ribbon ss, for making if i have the term correct a fused clapton wtih a flat multiple core or a mix with round in ss.then wrap in round ss. Does anyone have anything giving a coil making site like steam engine, that allows calcs with flat ribbon,unless i am doing something wrong i cant find on steam engine,they do have flat but i cant get it into clapton build will have another look or are they the same guge for guage, even if i could find the 0hms per foot i could try and match ribbon sizes to round. Crazy wire size in awg to 25 wondered if that was same resistance as awg 25 round. I have tried various form searches not a sausage.

Hi John, my coil calculator does flat ribbon wire but doesn't do Clapton coils.
www.vapinghardware.com/calculators/coil-wrap-calculator

 

[Deleted member 54254]

Use the wire wizard on steam-engine.

 

[nwhornet]

Flat/ribbon is like for like with the equivalent round wire AWG. When trying to work out resistance you need to allow for extra length due to wider pitch with flat/ribbon plus wrap wire. The wrap itself makes little to no difference to resistance but does affect ramp up/cool down.

 

[john john whaur ye gon]

Okay thanks,Must be missing something in Steam Engine, When looking At wire Wizard.got the calcs for round wire cores and round clapton cores
So flat Awg has same resistence per foot as round in same Awg, but due to it being flat, i assume my ohms may be slightly lower than if round. ie if i was building with round core and got say 0.2 ohms using flat it would be lower ie below 0.2 ohm heading towards 0.1 ohm so have to keep in mind amount of turns in coil.although less turns but bigger/equivelant size due to flat profile? Or am o i way out with this? Okay bed for work will visit again in morning

 

[Richard Winter]

Okay thanks,Must be missing something in Steam Engine, When looking At wire Wizard.got the calcs for round wire cores and round clapton cores
So flat Awg has same resistence per foot as round in same Awg, but due to it being flat, i assume my ohms may be slightly lower than if round. ie if i was building with round core and got say 0.2 ohms using flat it would be lower ie below 0.2 ohm heading towards 0.1 ohm so have to keep in mind amount of turns in coil.although less turns but bigger/equivelant size due to flat profile? Or am o i way out with this? Okay bed for work will visit again in morning

Do you know the width and thickness of the wire you are using.

 

[nwhornet]

Okay thanks,Must be missing something in Steam Engine, When looking At wire Wizard.got the calcs for round wire cores and round clapton cores
So flat Awg has same resistence per foot as round in same Awg, but due to it being flat, i assume my ohms may be slightly lower than if round. ie if i was building with round core and got say 0.2 ohms using flat it would be lower ie below 0.2 ohm heading towards 0.1 ohm so have to keep in mind amount of turns in coil.although less turns but bigger/equivelant size due to flat profile? Or am o i way out with this? Okay bed for work will visit again in morning

For a given length the resistance stays the same. Variation comes when winding a flat coil as pitch is greater, so increasing the length. A 6 wrap flat 26awg will be slightly higher than round 26awg as the flat coil will be longer.

 

[john john whaur ye gon]

For a given length the resistance stays the same. Variation comes when winding a flat coil as pitch is greater, so increasing the length. A 6 wrap flat 26awg will be slightly higher than round 26awg as the flat coil will be longer.

Got it many thanks.

 

[john john whaur ye gon]

Do you know the width and thickness of the wire you are using.

Sorry still looking about. Might be a bit till i try, Was going to try something with couple of round cores and an outer wrap next weekend, before i try the flat.
I like temp control and ss, but with it having a low resistance lots of calculations to try and get something i can use in a single rda, but double up for a dual without being far to low.,
But thinking, the thicker the made clapton wire it will take less turns on a jig to achive size and ohms, than a finer single wire or simple wire claptoned.
Been looking at i think it was the wire company or crazy wire company who i buy the round wires off on large spools at good prices, they give dimensions but no ohms per foot. Time will tell and trial and error to help understand and get it correct

 

[Richard Winter]

My calculator, when selecting flat ribbon will ask for the width and thickness of the wire then it will work out the number of turns needed for a given resistance and inner dimension.
It doesn't cater for Clapton coils (not finished designing it get) but to give you a pretty good result, you can ignore the wrap and just input the core or cores your using . The wrap is pretty insignificant in comparison to the core and won't alter the number of wraps needed to achieve your resistance.
I did think that the Crazy Wire Company did mention the ohms per meter on their spools but this may of been on the round wire gauges, been a while since I last looked.