Rickharris
Senior Member
If you haven't seen this already - How to make your answering questions easier http://tinyurl.com/yffa7b9
Making Dippy's life easier
- Thread starter Rickharris
- Start date
Andrew Cowan
Senior Member
Dippy, why is my MOSFET on fire?
Rickharris
Senior Member
BeanieBots
Moderator
Second link down...
Wonder if he grows his own silcon crystals or just buys them in.
Hate to think what his electric bill is like. The last time we ran up 16 lines, it took out the local sub-station. (oh.. no.. that wasn't us.. honest..
).
Despite being in the industry for over 25 years, the closest I ever got to making a semiconductor at home was making a single PN junction from a germanium crystal in a lump of coal and a 'cat's wisker' point contact.
Bet you've done that too Rick?
Blimey, he must have some serious kit in his hobby box.
Wonder if he grows his own silcon crystals or just buys them in.
Hate to think what his electric bill is like. The last time we ran up 16 lines, it took out the local sub-station. (oh.. no.. that wasn't us.. honest..
).Despite being in the industry for over 25 years, the closest I ever got to making a semiconductor at home was making a single PN junction from a germanium crystal in a lump of coal and a 'cat's wisker' point contact.
Bet you've done that too Rick?
Andrew Cowan
Senior Member
I tried with FET, instead of MOSFET. Thanks for trying to be helpful, Google...
Obviously Google has tried to do the New Zealand translation for foot on this one.
demonicpicaxeguy
Senior Member
you'd think by now the Diy Semiconductors would be possible and done by quite a few hobbyists,heck you can get the silicon through Alibaba, as you know miniturising the whole process would probably be a little difficult but not impossible and i imagine an instructable might pop up soon...Second link down...
Blimey, he must have some serious kit in his hobby box.
Wonder if he grows his own silcon crystals or just buys them in.
Hate to think what his electric bill is like. The last time we ran up 16 lines, it took out the local sub-station. (oh.. no.. that wasn't us.. honest..
Despite being in the industry for over 25 years, the closest I ever got to making a semiconductor at home was making a single PN junction from a germanium crystal in a lump of coal and a 'cat's wisker' point contact.
Bet you've done that too Rick?
having thought long and hard about it, you've only got to heat the silicon to a mere 1400 degrees c give or take a few hundred and keep it at that while you slowly rotate and withdraw your seed crystal in the pool of motlen silicon (keep the kids away from that),
polishing the wafers could probably be done with a modified drill press and a buffing pad (i have no idea how you could slice them up)
then you have the whole lithgraphic process to go through anyone got any diy ideas on that?
westaust55
Moderator
And if you want to confine your search to say the Rev Ed PICAXE forum then just say so in your google search:
this also comes in hand when searching for those 3 letter words on the forum
Silicon metal is easy to "make".
I have designed and built the electrical portion of 6 off 18MW submerged arc electric furnaces over the past 20 years and about to work on the design for a new 24MW furnace.
take some quartz rock, woodchips, charcoal, pet coke, and lots of heat via typically three 1200mm diameter carbon electrodes each handling 80,000 Amperes at around 240 volts and voila . . . . . silicon metal in a couple of hours
picaxe connections site:www.picaxeforum.co.uk
this also comes in hand when searching for those 3 letter words on the forum
Silicon metal is easy to "make".
I have designed and built the electrical portion of 6 off 18MW submerged arc electric furnaces over the past 20 years and about to work on the design for a new 24MW furnace.
take some quartz rock, woodchips, charcoal, pet coke, and lots of heat via typically three 1200mm diameter carbon electrodes each handling 80,000 Amperes at around 240 volts and voila . . . . . silicon metal in a couple of hours
demonicpicaxeguy
Senior Member
think of how quick you could do marshmellow.....And if you want to confine your search to say the Rev Ed PICAXE forum then just say so in your google search:
<B>picaxe connections site:www.picaxeforum.co.uk</B>
this also comes in hand when searching for those 3 letter words on the forum
Silicon metal is easy to "make".
I have designed and built the electrical portion of 6 off 18MW submerged arc electric furnaces over the past 20 years and about to work on the design for a new 24MW furnace.
take some quartz rock, woodchips, charcoal, pet coke, and lots of heat via typically three 1200mm diameter carbon electrodes each handling 80,000 Amperes at around 240 volts and voila . . . . . silicon metal in a couple of hours
where do they get the power for this surely they must build these things near a power station, 24MW isn't exactly a small amount of power, and it's not like you'd have that availble to every part of the grid either, reminds me of somthing on hackday "diy fusion power"
westaust55
Moderator
In the case of electric furnaces, yes they are generally “near” power stations – well within about 50km.
I have worked on other project with some other rather large loads as well where they have had to generate the power on the site. 20MW motors at an LNG plant for compressors - but there is plenty of gas nearby for power.
Erecting motors with ratings like 15MW (yes, that is 15,0000kW) and 400+ tonnes each, in the Great Sandy Desert (in West Aust) and then having to build a 400km gas pipeline plus a suitable gas fired power station can put a new perspective on a project.
Talking of power supplies, on the market now (based on submarine technology) are package nuclear powered generators in sizes as small as 10MW that are virtually a complete package delivered on a semi (articulated)truck.
Thanks Rick, I had seen that before. I think it got posted when I moaned about Google a couple of years ago
Sounds like Westy likes his Big Boy's Toys
Years ago I did a little bit of work on sub PWRs - quite impressive engineering. (Nuclear I mean, electrical stuff is 'old hat').
I think if you could get (free of charge) the power pack used in Astute subs then you (and hundreds of your neighbours) wouldn't bother with solar power for quite a few years.
There, that should give you a chance to Google. Though some people will know it all already I'm sure.
Fusion, however, is a little trickier. Whoever cracks that will make a fortune.
Sounds like Westy likes his Big Boy's Toys
Years ago I did a little bit of work on sub PWRs - quite impressive engineering. (Nuclear I mean, electrical stuff is 'old hat').
I think if you could get (free of charge) the power pack used in Astute subs then you (and hundreds of your neighbours) wouldn't bother with solar power for quite a few years.
There, that should give you a chance to Google. Though some people will know it all already I'm sure.
Fusion, however, is a little trickier. Whoever cracks that will make a fortune.
Fusion you say? Nothing to it- we've one already operating reliably down under. In fact the setup has shown itself so appealing that Australian motoring interests are now trying to grab the glory. It's the old Trans-Tasman "who invented Pavlova " saga all over again.
See recent application details => http://www.energymatters.com.au/index.php?main_page=news_article&article_id=645
See recent application details => http://www.energymatters.com.au/index.php?main_page=news_article&article_id=645
Blimey!
So the might and power of Europe and USA's best physicists, engineers and accountants can't crack the fusion confusion.
But some Kiwi does it in his bathroom with a roll of #8 wire?
That's what I call entrepreneurship at it's greatest
He'd make so much money that he could pay Bill Gates to mow his lawn.
Oh, I get it, haha - the old fusion reactor / sun gag.....
( That gag is almost as old as the physicists who don't use a spoon to stir their tea.. oh yes, they just let Brownian motion do it for them. . Actually it was discovered by a Mr Ian Brown-Motion who also invented Immodium)
So the might and power of Europe and USA's best physicists, engineers and accountants can't crack the fusion confusion.
But some Kiwi does it in his bathroom with a roll of #8 wire?
That's what I call entrepreneurship at it's greatest
He'd make so much money that he could pay Bill Gates to mow his lawn.
Oh, I get it, haha - the old fusion reactor / sun gag.....
( That gag is almost as old as the physicists who don't use a spoon to stir their tea.. oh yes, they just let Brownian motion do it for them. . Actually it was discovered by a Mr Ian Brown-Motion who also invented Immodium)