On the subject of power supplies. I am going to look into getting a custom toroidal from :
http://www.airlinktransformers.com/toroids.htm
A 50va with 2 equal secondaries at an order quantety is 7.90 so I would imagine a custom 60/9 secondary wouldnty be too much more. If it was £10 (obviously not inc postage or vat)would there be any others in the UK or europe interested ?
dave
http://www.airlinktransformers.com/toroids.htm
A 50va with 2 equal secondaries at an order quantety is 7.90 so I would imagine a custom 60/9 secondary wouldnty be too much more. If it was £10 (obviously not inc postage or vat)would there be any others in the UK or europe interested ?
dave
On the subject of transformers:
I just ordered 2 transformers in Germany.
These are 2x48V + 2x8V, so you can get 2*54 V. Enough to use for a standard BOSOZ.
They are kind of expensive, but well made and on stock. I already used the lower voltages in my DAC.
expensive transformers
Greetings, Harry
I just ordered 2 transformers in Germany.
These are 2x48V + 2x8V, so you can get 2*54 V. Enough to use for a standard BOSOZ.
They are kind of expensive, but well made and on stock. I already used the lower voltages in my DAC.
expensive transformers
Greetings, Harry
harryeng,
Are the transformers encapsulated in resin? Then it is a good price.
Also, anyone wants 4 set of xbosoz & psu boards?
I currently have 4 set of extra.
Are the transformers encapsulated in resin? Then it is a good price.
Also, anyone wants 4 set of xbosoz & psu boards?
I currently have 4 set of extra.
Gengis,
I am interested in your boards.
Check your PM
Greetings,
Harry
PS, those transformers are indeed encapsulated in Resin.
I am interested in your boards.
Check your PM
Greetings,
Harry
PS, those transformers are indeed encapsulated in Resin.
I like the little terminal block board they mount on the transformer mounting bolt. Neat idea.
An externally hosted image should be here but it was not working when we last tested it.
Hi there People
Nice to hear things are happening with the boards. I am having some trouble sourcing the mass of diodes for the PSU. The only list I have been able to find is Coulombs . I am in the uk and 20a rated zener diodes dont seem to be common. Do the zeners really need to be rated that high ? what would be the lowest value. The problem parts are listed below. Any help much appreciated.
1 1N5235B
5 HS241-ND
5 BER147-ND
8 MUR815OS-ND
8 1N4739
3 1N5230B-T
2 HS241-ND
2 BER147-ND
Nice to hear things are happening with the boards. I am having some trouble sourcing the mass of diodes for the PSU. The only list I have been able to find is Coulombs . I am in the uk and 20a rated zener diodes dont seem to be common. Do the zeners really need to be rated that high ? what would be the lowest value. The problem parts are listed below. Any help much appreciated.
1 1N5235B
5 HS241-ND
5 BER147-ND
8 MUR815OS-ND
8 1N4739
3 1N5230B-T
2 HS241-ND
2 BER147-ND
20 Amp? As far as I can tell, all the diodes are .5W and 1W.
The numbers listed are DigiKey part numbers, if you want to look them up there and get the manufacturer part numbers...
The numbers listed are DigiKey part numbers, if you want to look them up there and get the manufacturer part numbers...
you are correct. I was looking the product number up on a uk site (see below) and the ratings are different. Doh thanks for pointing out the obvious.
http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=4502413&N=0
http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=4502413&N=0
Will these diodes work ok ?
http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=19628&Site=US&Cat=31195818
they are ultrafast to-220ab 8a 600v
http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=19628&Site=US&Cat=31195818
they are ultrafast to-220ab 8a 600v
Kari said:
Can't remember if I sent you my adress by e-mail......
How do u get the adresses, paypal?
Where are the boards?
I see people commenting that they have received their boards. Is the boat to Minnesota that slow?
SteveA
I see people commenting that they have received their boards. Is the boat to Minnesota that slow?
SteveA
I live in Sweden, the same country as Kari, and I haven't recieved any pcb's yet. I'm guessing he has a lot to do.
I think that the only person commenting that he has received boards is Kari, and he meant that he had gotten ALL the boards from the maker.
steenoe said:
My apologies, I must have misunderstood the situation. Eagerly awaiting the boards.
SteveA
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