F1 Group Buy

[AlanElsdon]

i was checking the BOM and i have a few questions.

TH1-TH4 KC006L-ND this can be replaced with CL60 INRUSH CURRENT LIMITER?

DR1-DR4, can use FFPF30U60STU instead MUR1560GOS-ND?

can someone please point me to the Nelson Pass's article on matching mosfets ? i will purchase more mosfets so i can try to match it!

Link to the article http://www.passdiy.com/pdf/matching.pdf.

Alan

 

[samsagaz]

Link to the article http://www.passdiy.com/pdf/matching.pdf.

Alan

Thanks!


the only problem is the amount of transistors that i need to purchase

"Within a population of 150 transistors, you can easily get 12 sets matched to O.1V VGS at 200mA."

 

[hifimaker]

Builders are using different PSU boards either from Peter Daniel, BrianGT, or something of their own. Each builder is left to specify their own PSU parts.

A good source for matched Mosfets is our fellow forum member jackinnj from www.tech-diy.com. He has excellent prices and ships fast.

-David

 

[hifimaker]

i was checking the BOM and i have a few questions.

TH1-TH4 KC006L-ND this can be replaced with CL60 INRUSH CURRENT LIMITER?

DR1-DR4, can use FFPF30U60STU instead MUR1560GOS-ND?

The KC006L is a CL60 inrush limiter. Any rectifier diodes you find acceptable will work, however some PSU boards might specify specific package types. The 30U60's should work, they are specified at 30A at 600v.

-David

 

[samsagaz]

Ok, i see btw, the CL60 works under 220V right?

and i was checking the F1 Serv Manual and i really dont understand the PSU, i need to use 2 Transformers 220/ 18-0 ? to go into Dual Mono?

 

[Joschl]

Hello,
maybe I missed it but I could'nt find it in the thread.
When are the boards expected to be shipped?

Br
Joschl

 

[hifimaker]

The boards arrived a little late. I'm planning on picking them up late this afternoon or Friday. Depending on work.

-David

 

[Joschl]

Super...then I begin building the supply.

 

[woody]

Have you started mailing the boards out ?

 

[samsagaz]

Let me ask some question about the BOM

F1
--
Fuse Holder are for the PCB? or any Fuse Holder will works?

R5-6 71-RN55D-F-562 Dale RN55 1/8W Metal Film 562 kohms wich other resistor can replace this one? this backordered on Mouser.

Xicon ones will works right? Mouser # 270-562K-RC

 

[Tea-Bag]

Let me ask some question about the BOM

F1
--
Fuse Holder are for the PCB? or any Fuse Holder will works?

R5-6 71-RN55D-F-562 Dale RN55 1/8W Metal Film 562 kohms wich other resistor can replace this one? this backordered on Mouser.

Xicon ones will works right? Mouser # 270-562K-RC

Dale CMF55 is ROHS equivelent, but xicon will work fine.
THere is no fuse place for fuse holder on PCB. You want to get some panel mount one and drill a while for it in your chassis. Some are integrated with the IEC plug.

TB

 

[samsagaz]

Thanks too much,
Digikey have ttp://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=CMF562KHFCT-ND in stock, but are 1/2W maybe too big

 

[samsagaz]

What is the default size/value for Fuses? i want to know to see wich Fuse Holder will purchase, i will purchase like 20 to have it in stock for future projects

 

[themystical]

The boards arrived a little late. I'm planning on picking them up late this afternoon or Friday. Depending on work.

-David

Have you managed to pick these up Dave?

 

[belkinmousepad]

Just Wondering

What's the current status about sending these boards out? Haven't heard anything for a while now and I can't wait to get started.
Any Updates?
Thanks

 

[pchw]

Hmm, Dave usually would have responded.
I hope he is alright.

 

[woody]

I was about to ask the same thing and also hope he is ok.

 

[Tea-Bag]

I was about to ask the same thing and also hope he is ok.

Did anyone send him a personal note to check.
David's rep is not in question. Something must be keeping him from the keyboard.

 

[woody]

Yes I emailed him about 2 days ago and haven't heard anything
back .

 

[vonfilm]

The BOM calls for a 18+18 450VA Toroidal transformer. Would the Antek 4218 400VA 18+18 be sufficient?