That's life..
Back to Basics.....it was working. Some people like to complicate things....and those are normally the ones that know SQUAT. And my post to/in relation to whoever he is ruma was meant to bring you back on track....not make fun of you. FOCUS.
Sleep on it. The Solution is at your fingertips without big costs that some like to project. Have I got your attention ??
Regards,
tvtech
Hey Bronco
A 24V or 48V PSU at around 200-600 Amps will not happen. Better to buy a SLA battery charger and a few new batteries when you are in Electromagnet mode. Use them (the charged batteries) until the job is done.
Man, I am tired now. I will make more sense Tomorrow. Sleep on it.
All the best,
tvtech
Using the third wire in parallel with one of the others would reduce the overall wire resistance by 25%, which might help get more current through the coil, but if one or more of the batteries is knackered that's probably where your volts are getting dropped.The 200' wire is 3 stranded 12 AWG and I was using only 2 of the wires.
I'm sorry Bronco, I had/ & have no intention of dissing you as a "working class bum". Despite what tvtech says about me knowing squat, and by implication, himself being an expert down-the-well-metal- fisher, I honestly think that your chances of success with this idea are exceptionally small. Think about it, the inner bore of the well is 8". The PVC tube section you're using as magnet support is 7" with (its hard to see clearly from the images you uploaded) the bolthead and nut on the outside of this tube. So you have a 1/2" clearance between the well casing & PVC tube which is whittled down to almost nothing where the bolthead and nut protrude. The contraption just has to incline a tiny bit off vertical for it to jam inside the casing. Even if you, by some miracle, manage to lower it vertically down to the bottom of the well, and it picks up a heavy lump of steel, the weight of the steel will more likely than not, kink the PVC tube to one side (and that'll jam it).
The key to making this idea work is to have enough clearance to make the contraption jam-proof, even with it lifting stuff from the bottom. The next idea you should use, is to have a quickblow fuse rated for the current that the magnet draws, between the magnet power-supply and the magnet. That way, if things screw up again with the wires, all you lose is the cheapo fuse. Check your wires for integrity (ie no shorts) after your previous mishap BEFORE you reconnect the magnet power supply.
MrAl's point, which you found hard to follow (and so did I, sorry MrAl !) was for you to wind the electromagnet coil around the centre-leg of the magnet, instead of what you have at present (on the 'spine' of the E-section, judging from the photographs). That will give you the strongest magnetic field. The centre leg will be the North pole and side-legs be Souths or the other way around, depending on the directions of winding and current flow.
And get some sleep ! A tired brain is useless for anything ! Good luck!
Using the third wire in parallel with one of the others would reduce the overall wire resistance by 25%, which might help get more current through the coil, but if one or more of the batteries is knackered that's probably where your volts are getting dropped.
Do you know (from the microwave power rating) what maximum current the coil can withstand?
Edit: If the coil (apart from its connections) is exposed to well water you have a water-cooled magnet which could be run at a somewhat higher current than the rated max
Why did you change the configuration?Please try and keep up with my tired brain. I'll say it again, Please read and understand all posts before wasting your time typing. I said earlier that the first time I dropped it in that it got jammed up near the bottom. I removed the 7" PVC and am no longer using the winch because of that. I am now lowering and raising it with just the power wires by hand. One HELL of a workout I might add. Anyone want to come help? I'm doing this ALL by myself. No power equipment of any kind. Just manually operated contraptions that I built from scratch. Including the hand cranked winch.
This is the configuration I have been using all along until last night.
View attachment 86015
This is the configuration I changed it to last night.
View attachment 86016
"Please try and keep up with my tired brain. I'll say it again, Please read and understand all posts before wasting your time typing."
An excellent idea. I just did, and learnt somethings new:
Post #30 contained an obvious and easy to implement suggestion, which you neither answered nor commented upon.
Post #32 said that the fallen magnet's diameter is 8" AND that the well casing is a steel pipe with inner diameter of 8". At least one of those measurements is wrong don't you think ?
"I said earlier that the first time I dropped it in that it got jammed up near the bottom."
Post #64 said that the jamming occurred due to cables twisting. I find that hard to visualise. Even if the cables twisted, the more likely explanation for the jam is the size of the contraption in relation to the diameter of the casing.
"I removed the 7" PVC and am no longer using the winch because of that."
Post #32 said that the PVC tube was to prevent the magnet sticking to the steel well casing. How will you prevent it now that the PVC has been taken off ?
"I am now lowering and raising it with just the power wires by hand."
Post #64 said that the power wires were soldered on and got yanked off....not a very reassuring test of their weight-lifting strength is it ? Don't you think there may be a good chance of you repeating your earlier mistake and dropping the new electromagnet down the well to join its mates down below ?
I'm sorry Bronco, I know you're under a lot of stress & are trying your best but I repeat my earlier statement: The key to getting this to work is to prevent jamming ie. clearance, non-magnetic shrouding etc. Getting the magnet which is at the bottom of the well, out again, given that its diameter is close to that of the steel well casing and that it will stick to the casing, is beyond my ability to advise upon.
MrAl's point, which you found hard to follow (and so did I, sorry MrAl !) was for you to wind the electromagnet coil around the centre-leg of the magnet, instead of what you have at present (on the 'spine' of the E-section, judging from the photographs). That will give you the strongest magnetic field. The centre leg will be the North pole and side-legs be Souths or the other way around, depending on the directions of winding and current flow.
And get some sleep ! A tired brain is useless for anything ! Good luck!
Hi there,
I think he's still using only one coil though so this is still a secondary point.
I few notes;Cool. Thanks 4pyros. Now all I gotta do is find 2 more 1N3492. There are 2 empty holes in the aluminum plate for them.
I'm probably missing something, but can the coil really take >70 Amps without letting out the magic smoke?
I'm disapointed in you MrAl. You didn't see the drawings that took me a half hour to make?
I changed it from this,
View attachment 86021
To this. The red represents the coils.
View attachment 86022
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