Post Reply 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Multi meter
Author Message
Don Offline
Squonk and Toodle Club Member
Senior Staff

Posts: 13,454
Likes Given: 11,625
Likes Received: 18,248 in 8,808 posts
Joined: Dec 2013
Reputation: 213
Post: #11
RE: Multi meter
The formula is 1/R = 1/R1 + 1/R2 + ...

So for two 1.8 ohm coils you get 1/1.8 + 1/1.8 = 2/1.8 = 0.9

Or for 4 1.2 ohm coils 1/1.2+1/1.2+1/1.2+1/1.2 = 4/1.2 = 1/R so R=1.2/4 or 0.3 ohms

Basically identical dual coils halve the resistance, quad coils quarter it.

Going below about 0.25 ohms is only for those with the means to measure low resistances and high currents accurately - and high current cells of good quality. And very long drip tips - one of your pipe stems would be ideal for silly low resistances.

TVF tested battery info to be found here

[Image: 24291313393_16615b20b2_m.jpg]
20-05-2014 12:47 PM
Find all posts by this user Like Post Quote this message in a reply
[-] The following 3 users Like Don's post:
BOB (05-20-2014), Spasmod (05-20-2014), vapejuiceuk (06-04-2016)
18sixfifty Offline
too big for his britches

Posts: 807
Likes Given: 331
Likes Received: 823 in 431 posts
Joined: Sep 2013
Reputation: 10
Post: #12
RE: Multi meter
You can also check your atties by simply putting one lead on the positive post and one on the negative threads. If your meter doesn't zero say it's .1 or .2 or whatever you need to subtract that.  

If the natural tendencies of mankind are so bad that it is not safe to permit people to be free, how is it that the tendencies of these organizers are always good? Do not the legislators and their appointed agents also belong to the human race? Or do they believe that they themselves are made of a finer clay than the rest of mankind?
20-05-2014 04:00 PM
Visit this user's website Find all posts by this user Like Post Quote this message in a reply
[-] The following 2 users Like 18sixfifty's post:
BOB (05-20-2014), vapejuiceuk (06-04-2016)
Post Reply