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WTB: F4 PCB boards

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#462
What excel sheet?

That was directly from my order that I made out to Digikey! So ya, you're going to manually put them in, but I've given you enough info to do that. Here is the whole order:

(10) PPC1.00KZCT-ND RES 1.00K OHM METAL FILM .60W 1% 0 0.23800 $2.38
(5) PPC750ZCT-ND RES 750 OHM METAL FILM .60W 1% 0 0.23800 $1.19
(2) CMF47.5KHFCT-ND RES 47.5K OHM 1% 50PPM 1/2W 0 0.16000 $0.32
(10) PPC10.0KZCT-ND RES 10.0K OHM METAL FILM .60W 1% 0 0.23800 $2.38
(20) P0.47W-3BK-ND RES .47 OHM 3W 5% METAL OXIDE 0 0.47600 $9.52
(2) ZTL431BCSCT-ND IC SHUNT REG ADJ PREC 0.5% TO-92 0 0.90000 $1.80
(4) 1N4148W-FDICT-ND DIODE SWITCH 100V 400MW SOD123 0 0.44000 $1.76
(3) 570-1032-ND CURRENT LIMITER INRUSH 10 OHM 5A 0 1.61000 $4.83
(4) 1N5235BDICT-ND DIODE ZENER 6.8V 500MW 5% DO-35 0 0.36000 $1.44
(8) MUR3060WTOS-ND DIODE ULTRA FAST 30A 600V TO247 0 5.97000 $47.76
(5) PPC10.0ZCT-ND RES 10.0 OHM METAL FILM .60W 1% 0 0.23800 $1.19
(5) PPC27.4KZCT-ND RES 27.4K OHM METAL FILM .60W 1% 0 0.23800 $1.19
(2) 3296W-501LF-ND POT 500 OHM 3/8" SQ CERM SL MT 0 2.50000 $5.00
(2) 3296W-502LF-ND POT 5.0K OHM 3/8" SQ CERM SL MT 0 2.50000 $5.00
(12) CMF150HFCT-ND RES 150 OHM 1% 50PPM 1/2W 0 0.14900 $1.79


You'll see I've omitted some capacitors since I'll be ordering Black Gate 100 uf N capacitors for the main board (you don't need 220uf capacitors per Peter Daniel) and 15,000 uf Jensen 4 pole capacitors for the power supply from Parts Connexion. I also omitted Q1 and Q2 since I bought them from Peter Daniel already. Q3 through Q10 is omitted since I purchased them from Landoctor as matched MOSFETS. The LED is completely optional. I'm getting my transformer from Plitron 18VAX2/300VA. With a bias of 0.43A per device, and 12 devices for a stereo amplifier, you are talking about about a nice ~5A of bias! Wow!


Now get working fellas :smash: and stop hanging around oogling at this screen! 😱

Anand 😎.
 
#463
nycavsr2000 said:
What excel sheet?

That was directly from my order that I made out to Digikey! So ya, you're going to manually put them in, but I've given you enough info to do that. Here is the whole order:



You'll see I've omitted some capacitors since I'll be ordering Black Gate 100 uf N capacitors for the main board (you don't need 220uf capacitors per Peter Daniel) and 10,000 uf Jensen 4 pole capacitors for the power supply from Parts Connexion. I also omitted Q1 and Q2 since I bought them from Peter Daniel already. Q3 through Q10 is omitted since I purchased them from Landoctor as matched MOSFETS. The LED is completely optional. I'm getting my transformer from Plitron 18VAX2/300VA. With a bias of 0.43A per device, and 12 devices for a stereo amplifier, you are talking about about a nice ~5A of bias! Wow!


Now get working fellas :smash: and stop hanging around oogling at this screen! 😱

Anand 😎.
Click to expand...

ACTUALLY, i am populating boards now 🙂 im putting in the 4 220uf caps and leaving out the others. SInce ihave 80% of the resistors already im populating them now. I hae to order caps for the psu and diodes and a few other resistors. Them im set, i bought my transformer from plitron already. I should be up and running very soon.

Thanks for the help, now to order handfull or less of resistors from digikey..
 
#473
Hi all

I followed korben69's bom(v2.1 - post #287) without fully checking what was going on after a couple of people chipped in with amendments.......can anyone tell me why r10 to r15 are 100R on this bom when all Nelson's circuits seem to be for 150R...

I have searched for reference to this but drew a blank.

regards

Ed
 
#474
vitalstates said:
Hi all

I followed korben69's bom(v2.1 - post #287) without fully checking what was going on after a couple of people chipped in with amendments.......can anyone tell me why r10 to r15 are 100R on this bom when all Nelson's circuits seem to be for 150R...

I have searched for reference to this but drew a blank.

regards

Ed
Click to expand...

Hi Ed,
there are (at least) two versions, the 6/4/07 R0 which has 150 gate resistors and 10ohm source on jfets, and (i guess) the last revision, which has 100R on mosfet's gates.

Take a look here: http://www.diyaudio.com/forums/showthread.php?postid=1289459#post1289459

my post was about the first and r0 version.
The new one (100R) should be the definitive one.
 
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