/diy/ - Do It Yourself

Computer chargers are usually ~24V and 2A
Take 10 of them and hook them up in parallel. BOOM 24V DC at 20A

>>1109742
>mess with induction hotplate
That's the easiest solution.

Or make your own, they're easy as pie.

>>1109749
Even at $5 each, that's $50 worth of power supply. And 24v is on the low end, you need 36-48v for max power.

>>1109751
Most of the schematics I see still need a power supply and aren't much cheaper than the premade ones.

>>1109760
Make a mains-powered one you nigger.

here are some resources:

http://uzzors2k.4hv.org/index.php?page=ihpll1
http://uzzors2k.4hv.org/index.php?page=multiinverter
http://uzzors2k.4hv.org/index.php?page=pllinductionheater1
http://www.richieburnett.co.uk/indheat.html
http://www.mindchallenger.com/inductionheater/

You can get 48v/10A industrial PSUs from china for like $40 a piece.

>>1109778
Mains is the best way to go for this desu

However, I believe oxyfuel is the best way to go for heating just about anything

>>1109742
Why don't you just use AA batteries? You can even buy the rechargeable solar powered ones. Simple solution to simple problems

>>1109829
Times two is $80

>>1109943
Because it costs money

>>1109940
>>1109778
I'm not really an electrician. I can follow schematics, but I don't really get much beyond the rectifier. Open flame and trying to source and store even just propane, much less oxygen tanks and acetylene, introduces a lot of hastle.

>>1109742
ITT OP, who has never been to college, pretends he's an electrical engineer with the intelligence of Tesla himself.

>>1109742
What could I realistically use something like this for as a /diy/er?

Ive seen them and they are cool, but im not sure I need one. But hell the schematics ITT make me want to slap one together.

>>1110200
education and intellect are two completely different things. The internet is a far better tool for information than college, if an individual applies himself. college is for people who need structure to learn.

>>1110247
College is about teaching problem solving skills and work readiness.

You dont use 80% of the shit you learn in the working world. You learn most of what you need on the job after you are hired.
So sure, you can learn stuff on your own and get a job but youll never be as effective as someone who worked in a degree tailor made for that career.

Programmers are a good example. Learning on your own can get you a job as a code monkey, but unless you are a savant who spent 16 hours a day trial and error, you will never be as flexible as someone who has done a proper CompSci degree.

>>1110250
moving goal posts bud.
problem solving is apart of intelligence.
I dont think you understand my point, indoctrination does not equal intelligence. Google philosophy, you will learn how to think critically, buy a college text book so you can have the fundamentals, shit watch a fucking youtube video and learn how to repair something. You have unlimited knowledge at your fingertips, but you need someone to spoon feed it to you? that sounds like a foolish person to me, not to mention the financial burden.
and you could have done better than programmer, it is called a portfolio. and portfolios get you a job, if you are intelligent.

Listen, im not even defending this dude, i just think you have a very narrow mind.

>>1110260
>this whole post

Maybe you should get on google and learn some better critical thinking skills.

>>1110260
>indoctrination does not equal intelligence.

You arent going to school to become more intelligent, you are going to be educated. You are going to school to train for potential employers. If that "indoctrination" scares you, then go work a blue collar job.

>You have unlimited knowledge at your fingertips, but you need someone to spoon feed it to you?

Being directed into knowing exactly what you should and shouldnt be doing for your chosen degree is invaluable.
If you arent being efficient you will be left in the dust by every other person studying your field. They will get hired over you for the good jobs, you will end up in a shittier job having to work harder to move up.

I started programming in junior high. It took maybe 1 month of schooling to usurp 5 years of my self taught programming.

>and you could have done better than programmer, it is called a portfolio

Yes, employers fucking love portfolios.
Thats why it was part of your classes to build a personal website and started filling up my portfolio with projects I was assigned to do.
There are also recruiters for tech companies walking around campus you talk to and network with.

Anyways I have first hand experience with self taught programmers. They werent bad programmers, some just had been at their same job for 5 years before I showed up green right out of college. I got promoted pretty quickly, and after I had my 1 year in I left for another company with a decent pay raise.

Literal code monkeys that will be the first to go when the company outsources.

> i just think you have a very narrow mind.

I just think you are ignorant. The shit you are saying has no bearing in reality.
Sure the liberal arts meme is one thing, sure you arent entitled to a job because you got a degree.

Doesnt change how an actual degree is highly valuable for white collar jobs.

>>1110200
I literally said I'm not an electrician type. I need it for heating metal without fire, I'm not making it because I pretend to have electrical engineering skills. That's why I'm asking.

The relevant part of the project to my DIY skills have to do with metal working, not electronics.

>>1110247
That's a pretty cool philosophy you have there anon, when a potential employer asks for your qualifications just tell them you don't have any.
Sure there is lots of great information on the internet. But there's also loads of shite garbage that's completely wrong or misleading but mostly incomplete.
You can easily find some half attempted blog regurgitation of any topic you want but it won't answer your questions or explain your concerns.

>>1110263
again you miss my point
i am talking about intelligent people, not people who need to be taught to be intelligent.
IQ is wonderful and consistent. Education fluctuates throughout your entire life.
Also if you think colleges are not politically charged, well sir, you are an idiot.

Definition of indoctrination: to imbue with a usually partisan or sectarian opinion, point of view, or principle

Did i say "Don't read literature from colleges", no i said the opposite. I never said people shouldn't go to college either. in fact, i believe most average people should go to college. my whole argument to begin with was to differentiate between education and intelligence. You were implying that college correlates to your intelligence. They are completely separate.

now i call you narrow minded, because you cannot look at life from a different perspective. The free market is a wonderful thing, you don't need to look good for employers, you can be one. Simply the notion of owning your own business is considered to have "no bearing in reality" to you? You underestimate the power of the free market, and working for yourself.


"Sure the liberal arts meme is one thing, sure you arent entitled to a job because you got a degree."
self defeating argument?

>>1110265
>I need it for heating metal without fire

What kind of metal for what purpose? Tools are the answer to SPECIFIC needs.

Induction heaters are not versatile. Make one for fun if you like.

4chan is the only place I've seen where posters refuse to provide details in their first post. That's a useless, stupid teentard custom so kill it.

>>1109742
I don't know loads about electric, but couldn't you just rewind the secondary of a Microwave Transformer, then put a Bridge Rectifier and Large Filter Cap after it.

Wouldn't that give a DC power supply of around 1000w.

>>1110276
Kek
This guy is so NEET it's not funny

>>1110294
That's because 4chan offers the unique capability of sanctioning conversation-like posting, rather than something more similar to writing letters, dipweed.

>>1109742
Depends on what thickness of material you are planning to heat, you sure could. Induction stovetops are tuned for realtively thin metals, and have lower duty cycle due to it's coils. Perhaps you could use a few spare ATX power supplies.

I would suggest not making your own if you don't have that good of a command of electronics because it is a very high current device, and IGBTs are quite expensive. Destroying one is just too risky. You could try a few smaller models or salvage a few IGBTs from power supplies and the like.

>>1110343
There is zero reason for non-specific posts when someone is asking for SPECIFIC advice you mong.

There are many different sizes and capacities of induction heaters, shithead. MANY. They range from quite small to large units used to anneal heavy steel rod (for example hydraulic cylinder piston rods) prior to machining.

"Hurf, durf how maek thing warm drool" is not a useful question format.

OTOH. "I need to induction heat steel round stock up to 25mm diameter for a length of two inches" is usefully specific.

If you want to learn useful things, make the fucking effort to ask carefully phrased questions. How hard is that?

OP doesn't really know what he/she/it wants to do. OP was offered mains-powered induction heater info which is the only type worth bothering to build if you cannot locate one on the used equipment market. Liquidation auctions are nice for those but you have to study beforehand to know if a unit is suitable.

>What could I realistically use something like this for as a /diy/er?

Nothing. The reason you don't know what to do with it is because it's basically useless. If you can post WHAT you want to be ABLE to heat /diy/ can point you to the many heating options!

Put the effort into more useful projects and tools. Every wasted effort is resources expended which could get you useful equipment. People sometimes resent hearing that but it's accurate and pointing it out is not being negative.

Determine what you want to build, then consider how best to build it, then make or acquire tools and equipment with a GOAL in mind. You will be happier and have useful things.

>>1110441
Clearly the OP wants a induction heater in the 1000w range, as indicated by the text, "1000w" in the post, and the fact that induction hotplates seem to be between 1000-2000w. The OP also did not express an interest in building one, and was comparing two relatively off the shelf units.

It would be like if someone asked you if they should buy a security flathead, or if they could just file a slot in a flathead, and you tell them to go machine their own flathead screwdriver, and you need to know what the screwdriver is being used for for the size, and security flatheads aren't even useful because most nothing uses them.

For some reason, you have it in your head, the OP wants to make a security flathead screwdriver for the sole purpose of making one even though he has no use for it. The OP is asking about a tool, and you think he's trying to make a useless project. Which probably reflects on the fact that you probably made an induction heater to turn things red hot for no reason and you're bitter because you made one for no reason.

You also seem to have no idea about induction heating, because the same heater can be used to perform lots of tasks. You don't have to purpose made a heater, or even a special coil for 25mm 2 length round rod annealing.

>>1110200
>>1110247
>>1110250
>>1110260
>>1110263

>>1110441
Because the time it takes you to help him figure out what he wants to do is SO valuable that you're spending it on...

*drumroll*

Fucking four chaannneeee.

(and on massive rants, apparently)

Cunt.

>>1110234
Glowing hot 1000 degree knife

>>1110637
Also casting with a graphite crucible