Member
Joined 2002
Would this fancy r-core tranfo work?
http://eshop.diyclub.biz/product_info.php?cPath=152_74&products_id=56
#R80-34 primary (0-115) x 2 /SCN: (30-20-0-20-30)X2(1A).0-15 X2(1A).0-9 (1A)
The 20vac secondaries could be used for the CCS and the 30-0-30 secandaries could be tied together for 60vac.
Is 100watts enought power?
The price seems nice at $30usd.
-David
http://eshop.diyclub.biz/product_info.php?cPath=152_74&products_id=56
#R80-34 primary (0-115) x 2 /SCN: (30-20-0-20-30)X2(1A).0-15 X2(1A).0-9 (1A)
The 20vac secondaries could be used for the CCS and the 30-0-30 secandaries could be tied together for 60vac.
Is 100watts enought power?
The price seems nice at $30usd.
-David
I suspect even the 50W R-core is sufficient.
I can't seem to find it on their page, but I picked up
a 50W dual primary, 4x18VAC transformer at
their store when I was in HK a couple months
back. You can tie three secondaries in series for
the + voltage and one secondary for the - voltage.
Dennis
I can't seem to find it on their page, but I picked up
a 50W dual primary, 4x18VAC transformer at
their store when I was in HK a couple months
back. You can tie three secondaries in series for
the + voltage and one secondary for the - voltage.
Dennis
I think those are the transformers that Coulomb was getting (got?) for this project (4 x 18V).
You could also use two small 18-0-0-18 transformers the same way.
You could also use two small 18-0-0-18 transformers the same way.
Member
Joined 2002
BrianDonegan said:
I have one on my Dac.. it's nice doesnt get hot quiet as heck and looks pretty too 😀
R26-14 0-18X4 (0.6A X4)
Is this the one from DIYClub.biz being considered? Anyone get an estimate on shipping?
Is this the one from DIYClub.biz being considered? Anyone get an estimate on shipping?
We haven't, but the shipping is going to be steep. We are talking to a few folks about getting something made just to cover all the bases.
PCB update 🙂
The PCBs have been fully funded by me with help from the preorders, and the entire order is in production.. So everything is in full swing. I know Brian has also obtained quite a lot of the kit contents so all in all things are going well.
I want to personally thank all of you who put in pre-orders. I very much appreciate your support and confidence even after some of you who are interested in this circuit have had some very bad experiences with others.
It means a lot to me to have the faith of my comrades. 🙂
Also thanks so much to Nelson, Terry, Steen, Tony, and a host of others I cannot name right now who gave me a lot of great tips on the layout.
Cheers!
Russ
The PCBs have been fully funded by me with help from the preorders, and the entire order is in production.. So everything is in full swing. I know Brian has also obtained quite a lot of the kit contents so all in all things are going well.
I want to personally thank all of you who put in pre-orders. I very much appreciate your support and confidence even after some of you who are interested in this circuit have had some very bad experiences with others.
It means a lot to me to have the faith of my comrades. 🙂
Also thanks so much to Nelson, Terry, Steen, Tony, and a host of others I cannot name right now who gave me a lot of great tips on the layout.
Cheers!
Russ
...sniffle...
I'm pretty psyched about this kit. Glad it's finally in motion. Should be very enjoyable for all soon.
I'm pretty psyched about this kit. Glad it's finally in motion. Should be very enjoyable for all soon.
I kind of like the overkill of the 100w r-cores. One side benefit is the 100w model has a 9vac winding to power my PIC controlled volume control.
I emailed DIYClub.biz to get a quote for shipping for model R80-34 primary (0-115) x 2 /SCN: (30-20-0-20-30)X2(1A).0-15 X2(1A).0-9 (1A)
Any other thoughts on the amount of trafo wattage needed appreciated.
-David
I emailed DIYClub.biz to get a quote for shipping for model R80-34 primary (0-115) x 2 /SCN: (30-20-0-20-30)X2(1A).0-15 X2(1A).0-9 (1A)
Any other thoughts on the amount of trafo wattage needed appreciated.
-David
Member
Joined 2002
dw8083 said:
I agree with the 9v tap because i will use my digital relay volume pot from digi01 😀
I agree it would be a nice trafo to use. However, unless we could get a spectacular volume deal, the shipping charges to us then to you would likely make it more expensive. Probably best to order them direct and save a shipping charge.
C1
What function has C1 and why does it has to be non polarized? I tried to find an answer in the thread but may be i missed it.
Thanks for your help.
Joe
What function has C1 and why does it has to be non polarized? I tried to find an answer in the thread but may be i missed it.
Thanks for your help.
Joe
Re: C1
Its just me but I cannot see why you all don't want to use the partsexpress clearance toroids?
Parts Express Clearance Toroid
I've suggested this a number of times resulting in no commentary. Its big, cheap, and has all the windings you will need for a dual mono preamp, in 1 xformer.
EDIT: PRICE = $29.68
dw8083 said:
Its just me but I cannot see why you all don't want to use the partsexpress clearance toroids?
Parts Express Clearance Toroid
I've suggested this a number of times resulting in no commentary. Its big, cheap, and has all the windings you will need for a dual mono preamp, in 1 xformer.
EDIT: PRICE = $29.68
I know they aren't toroids, but there are some nice Triad 60VCT transformers on eBay for $5 each (have to buy 2) plus some shipping. Plan to use one of those and a small toroid from Digi-key. Puts the cost under $30, including shipping.
joster asked:
I just spoke to "Lynn" @ PE about a price point for 129-095.
Lynn checked with a supervisor and replied for 10 or more, the "one time" price would be.
$25.34
She explained this offer was to one person only and asked how many I would like at this time. (Open mouth...insert foot...chomp)
There was no further discount for greater quantity.
I explained the nature of a pending group buy and said someone would get back to her in a few days.
I need one of these. Who else?
I just spoke to "Lynn" @ PE about a price point for 129-095.
Lynn checked with a supervisor and replied for 10 or more, the "one time" price would be.
$25.34
She explained this offer was to one person only and asked how many I would like at this time. (Open mouth...insert foot...chomp)
There was no further discount for greater quantity.I explained the nature of a pending group buy and said someone would get back to her in a few days.
I need one of these. Who else?