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
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
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
steenoe said:
My apologies, I must have misunderstood the situation. Eagerly awaiting the boards.
SteveA
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