I have 250ft/lbs adjustable torque wrench. I need to torque a device to 450ft/lbs. I can buy a torque adapter extension.
I have no problem with the math to compute the torque, what I don't see is how do I get the length of the of the torque wrench?
I know from the center of the socket, but I...
I found a page about, "The “Four Times the Impedance” Rule for Broadband RF Transformer Windings: Where Does it Originate?
Way too much math for me, but the last two pages explain why 4 times...
>Glad to have helped you clarify your problem, as your post was quite ambiguous.
LOL, my explaining to you about the use of AsubL in transformer calculations did nothing clarify anything in my original post.
I'm sorry, you didn't understand, but, rather than my question being ambiguous, it...
...you get the minimum inductance of the 100Ω winding, 320uH. Now the ferrite binocular core I'm using has an AsubL of 12,000. The formula is N=1000 * sqrt of (desired 'L'(mH) / AsubL(mH/1000turns) So converting 320uh to mH we get 0.32mH.
Then crunching the numbers, 1000 * sqrt (.32/12000) =...
Also, rereading, I see you wrote,
>So try 36 primary to 4 secondary turns
A 9:1 impedance ratio transformation, requires a 3:1 turns ratio.
So far I have wound a 5 to 15 turn transformer, the primary inductance is about 20% high.
I will try a 4 to 12 turn ratio today, I suspect I will have...
> Remember, now you have the opportunity to learn more!
LOL, I'm plenty aware of single turn untuned loops, multiturn Tuned loops, BOG antennas,
Yagi's, Phased antennas, etc. But sure, I'm always learning new things.
>You're planning a FET preamp, why not just a 1:1 transformer for isolation...
I'm setup with two fiberglass poles 70ft apart, the original plan was for a DKAZ antenna, but heard it had low output on LW signals so decided to start with a Superloop antenna with a variable termination, and then later switch it over to a DKAZ. I later got info that the DKAZ is OK on LW, but...
I have wound 100s of transformers, they all work, but as they say fray the end of a coax and you will receive may signals,
But does that make it a good antenna?
Mikek
...about B/H curves. The answer I ended up with is that our measurement current was so small that the H field line slope was still very shallow (10*). It wasn't until you got to much higher H field (more current flow) that the slope got up to say 45* instead of 10*. An exaggerated drawing to...
I have a 4" vertical thin wall aluminum spillover tube, I want the spill over tube to have two adjustments besides the full height. There is not a lot of room to make these adjustments, but probably just enough depending on solution. I have include some relevant info in the drawing. My first...
Acetone, Hexane, bits made from plumbing parts, 90C operation, 10kV electricity....
Hope you have
A) Life insurance
B) Your garage is a long way from your house
C) A video recorder running so that investigators can see what the big bang was...
The hexane is only for cleaning between runs of...
...Polyvinyl Chloride.
Looks to me a bit like a domestic plumbing adapter so could easily get VERY flexible at 90C
Even more flexible at 90*C, than room temp, to the point I'm concerned it might deform under the heat. Also it is not good with acetone, has a rating of, 'severe affect' which...
The rubber boot I was so happy to find may not be the right material. I find it is called Elastomeric Polyvinyl Chloride.
I can't find and specifications for Elastomeric Polyvinyl Chloride, all I get are hits for PVC.
Would there be any difference in max temp before deforming between...
...I have thought it will be much cheaper to use 8.5" O.D, aluminum pipe and
coat the inside with an epoxy, that will insulate and hold up to oils @ 90*C.
We will test the Por-15 and ask the company how it works with aluminum.
Any recommendations for an Epoxy that will be a good candidate for...
Good for 10kV?
I expect so, but will have to spend the $24 to get one and test. The flat bottom is a good design for us, it will
be easier to drain. I think I can put a drain on the flat part.
The previous test vessel we built had a resistance over 200MΩ,with emulsion in vessel, the limit of...
The outer tube and plug will slide down when the weight of the fluid is added.
Your welded ring looks to be in the wrong place.
Probably should add more info. I expect a tripod will be welded to the outside of 8" pipe support it standing upright.
Then the 4" pipe could slid down, thus the...
I have made another drawing with an Oring seal.
Sorry for my drawing skills, I hope it gets the point across.
I would not be able to engineer a proper Oring seal, so that
would need to be farmed out. But, I want to get a concept that
would do the job.
This is ignoring how The 4" pipe will be...
