Building a transformer
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From: ian field on 10 Aug 2006 17:31 "sparc" <sparc_001(a)yahoo.com> wrote in message news:1155236394.382644.151200(a)i3g2000cwc.googlegroups.com... > 2N3055s ...and AD149s ... all Si too ... > All Pro-Electron numbered devices beginning with "A" are Germanium!
From: Mark Fortune on 10 Aug 2006 17:25 David wrote: > > "Mark Fortune" <mark(a)fortrex.co.uk> wrote in message > news:44db929f$0$31649$db0fefd9(a)news.zen.co.uk... > >> sparc wrote: >> >>> u know ...if u really wish to "learn" ...why dont you design yourself a >>> 50A, 0-50V continuously variable SMPS ....capable of operating in both >>> CV and CC modes. >>> --------------8<---------------8<-------------------- >> So yes, forgive me for my sins, I repent! ;) >> >> Thanks to all those that offered their advice however, it's been >> insightful to me, and I certainly wont give up the opportunity to >> build my own transformers in future... just not on such a power crazed >> level where there are better solutions. >> >> Regards, >> Mark > > > Also realize 50A at 50V is 2500 watts at 100% efficiency. If you are in > the USA, you will need a 220V power connection to do this. > > David > Wow, pretty sure i'm not going to need 50A at any voltage... not sure where that came from as originally I only wanted 10A. Incidently though, im in the UK so we have 230V by default.
From: isw on 10 Aug 2006 23:46 In article <lxMCg.3554$%j7.860(a)newssvr29.news.prodigy.net>, "David" <someone(a)some-where.com> wrote: > "Mark Fortune" <mark(a)fortrex.co.uk> wrote in message > news:44db929f$0$31649$db0fefd9(a)news.zen.co.uk... > > sparc wrote: > >> u know ...if u really wish to "learn" ...why dont you design yourself a > >> 50A, 0-50V continuously variable SMPS ....capable of operating in both > >> CV and CC modes. > >> > >> (i know what some ppl are going to say ....he wants to learn ...not > >> repent) > >> > > > > Given the replies i've had on this, it seems the more sensible way of > > going about it. Whilst i'm sure I will enjoy with experimenting with > > transformers in the future, building a power transformer - specifically > > the beast i'm after does seem to be costly and time consuming going by the > > responses i've had on this thread, and is unlikely to work (first time > > around anyway), where in contrast I could just pick up old/broken > > equipment at the local car boot sale for under a fiver. I've had a little > > read on (very basic concepts of) switching mode power supplies, and this > > does seem to way to go in terms of efficiency and size. > > > > So yes, forgive me for my sins, I repent! ;) > > > > Thanks to all those that offered their advice however, it's been > > insightful to me, and I certainly wont give up the opportunity to build my > > own transformers in future... just not on such a power crazed level where > > there are better solutions. > > > > Regards, > > Mark > > Also realize 50A at 50V is 2500 watts at 100% efficiency. If you are in the > USA, you will need a 220V power connection to do this. Not to mention the heatsinks it'll take when you want to deliver, say, 12 volts at anywhere near that 50 Amps. Hint: Plan on a fan and wheels. Isaac
From: Dave Plowman (News) on 11 Aug 2006 04:29 In article <44db929f$0$31649$db0fefd9(a)news.zen.co.uk>, Mark Fortune <mark(a)fortrex.co.uk> wrote: > Thanks to all those that offered their advice however, it's been > insightful to me, and I certainly wont give up the opportunity to build > my own transformers in future... just not on such a power crazed level > where there are better solutions. I'd also query the need for such a large bench top supply - unless you're regularly repairing or building things like power amps. -- *The man who fell into an upholstery machine is fully recovered* Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Mark Fortune on 11 Aug 2006 05:36
Dave Plowman (News) wrote: > In article <44db929f$0$31649$db0fefd9(a)news.zen.co.uk>, > Mark Fortune <mark(a)fortrex.co.uk> wrote: > >>Thanks to all those that offered their advice however, it's been >>insightful to me, and I certainly wont give up the opportunity to build >>my own transformers in future... just not on such a power crazed level >>where there are better solutions. > > > I'd also query the need for such a large bench top supply - unless you're > regularly repairing or building things like power amps. > aha, you've discovered one of my planned future hobbies :) any money in it though? |