andybb said:If any of you guys need woodworking advice feel free to head over to our version of your site https://lumberjocks.com/
Also, here are the turns required for a 120V primary 60Hz transformer for a standard 900300 core from toroid...
Code:Transformer size Volts/turn 30 VA. 0.08 120 VA. 0.15 500 VA. 0.35 1000 VA. 0.585
No, ferrite cores saturate magnetically at even lower currents than metal powder cores (even though they are not going to be damaged by the heat)..gophert So I should either skip the transformer part of the mod or get a ferrite core toroid?
With a ferrite core of about the same size wrapped with 8AWG I should get a safe and smoother current flow or is it a lot of effort for little gain theoretically?
I recommend using the second fan if you feel the need to use the toroidal core.I do have a second fan to add to the case.
Not needed if you skip the core.Sorry, but that is Klingon to me without a little research as to what that means.
Using Youtube as a reference to do something is very sketchy at best. People can claim anything, like the guy saying he's an EE. You need to do more researching after finding something on Youtube.
Not needed if you skip the core.
you can wind the 8AWG around the same core as the existing wires without a problem. don't connect the existing wires to anything though. on the other hand, if that toroid came out of a Velodyne amplifier (usually a subwoofer), that piece of equipment is worth more dead (but complete) than the lathe is alive. Velodyne subwoofers, for instance are super expensive, and Velodyne doesn't sell repair parts, you actually have to send them the unit to have it repaired.even my rudimentary knowledge tells me running 8AWG into an 18AWG coil is a bad idea and is above my pay grade.
Now you tell me!You don't need the ferrite core to make the choke, a short length of 1 1/2" PVC pipe will work. And this will allow you to make any size choke you want.
There is already a schematic for one on this site, just search for it.
you can wind the 8AWG around the same core as the existing wires without a problem. don't connect the existing wires to anything though. on the other hand, if that toroid came out of a Velodyne amplifier (usually a subwoofer), that piece of equipment is worth more dead (but complete) than the lathe is alive. Velodyne subwoofers, for instance are super expensive, and Velodyne doesn't sell repair parts, you actually have to send them the unit to have it repaired.
if you know where you can find some scrapped CRT TVs or computer monitors, the deflection yoke (the coils on the neck of the CRT) has a rather large toroid core that with a bit of work can be removed from the yoke. most yokes are glued to the CRT with silicone compound, so they are not very difficult to remove. i've had a couple of them that were one solid piece of ferrite, but many are made of two halves with steel spring clips to hold the halves together. in some ways, the split ones can be more convenient to use because you don't have to continuously pass the wire spool through the hole.
Now you tell me!Unfortunately, I searched long and hard and could find nothing referring to that.
Was that a joke? With my limited knowledge base I sincerely thought you were giving me genuine advice, not sending me on a snipe hunt. Now I really feel stupid after spending a half hour looking for that. At my age, every half hour is valuable!To my simple mind, I don't think you should hook up to the existing wires of the toroid. The video shows him having 2 bare toroid "forms" and winding a new one over them. I've even seen some chokes wound on a plastic core a so called 'air core'.
Was that a joke? With my limited knowledge base I sincerely thought you were giving me genuine advice, not sending me on a snipe hunt. Now I really feel stupid after spending a half hour looking for that. At my age, every half hour is valuable!
Do you see anything wrong with the thinking in the above postings from the welding site forums?
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