525 build thread

[Reptil]

localised some ROE caps. Are these too old? I find them all over my old german stuff.

then, is this still on?
[quote author="rascalseven"]Ahhhh..... got it, T, makes sense. I missed that.

That'd be cool too.

BTW, is anyone familiar with this manufacturer? http://www.handlesunlimited.com/knobs.html (check out the bottom three styles.... Look familiar???)

:shock: :shock: :shock: :shock:

They are apparently available in black anodized as well as natural aluminum. How cool would black anodized be for a DIY 525 (or 553, 312, etc...)???

Can you spell G-R-O-U-P B-U-Y ???

:thumb:

JC[/quote]

 

[SSLtech]

[quote author="peter purpose"]Not being a cap snob and lacking the lug holes to tell the difference, I shove whatever I have in there.[/quote]
Nominated for best post of 2007.

Gawd bless ya Pete.

Keef

 

[peter purpose]

[quote author="SSLtech"]Gawd bless ya Pete.

Keef[/quote]

Gawd bless you n yorn.

 

[peter purpose]

OOPS....

Due to my being a stupid bastard, I sent the wrong file to fab.

The upright op amp needs a teeny weeny mod.

Leave a leg long on C1 and take it to the base of Q4.

Sorry about that chaps.

peter

 

[peter purpose]

Possible mod?
Would it make sense to put a 75R resistor at each of these points to stop the output of A1 shorting to ground when pots are at FCCW?

 

[SSLtech]

No. The output only sees 1kΩ to ground, not a short.

Keith

 

[Reptil]

[quote author="SSLtech"][quote author="peter purpose"]Not being a cap snob and lacking the lug holes to tell the difference, I shove whatever I have in there.[/quote]
Nominated for best post of 2007.

Gawd bless ya Pete.

Keef[/quote]

fair enough LOL

btw.. RS Components carries the edge connectors.
(the only one afaik over here)

also found some flat, white leds (through the x0xb0x kit).
maybe I can persuade them to fit. that would be neat.

 

[Jim50hertz]

[quote author="Reptil"]
btw.. RS Components carries the edge connectors.
(the only one afaik over here)
[/quote]

Any chance of posting the part no.?

Cheers

Jim

 

[Reptil]

have to dive into the pile of papers in the corner of the room :shock:
give me a moment please... couldn't find the email...too. mmmm
and the laserprinter crapped out, and came back on... not one of my best day
hold on please..
:green:

 

[Reptil]

on the connector itself... cinch 252 15 30 240
and 50 15B-10 and small print 09 75
is that sufficient?

 

[Walrus]

Unfortunately RS only seem to do stock number 483-865 now, which is an 18 way connector. It is the correct pitch but will have to be cut down.

 

[Reptil]

yeah, better contact them.
I did, and they could get me the right connectors, probably they had them sent over from a US stock. I had to be persistent. :wink:

 

[peter purpose]

[quote author="SSLtech"]No. The output only sees 1kΩ to ground, not a short.

Keith[/quote]

Cheers Keef.

Must engage brain before opening mouth.

 

[peter purpose]

I've just scanned the original schematic for a better view.
Things have changed, but I'm not going to go through all that again.

http://www.twin-x.com/groupdiy/albums/userpics/525.jpg

peter

 

[gar381]

the Edge connecter I use on all my api/melcor cards are:

EDAC 306-015-500-102

This connecter seems to fit Peter's PCB as well.

Digikey # EDC306150-ND


Mouser # 587-306-50-015

GARY

 

[peter purpose]

[quote author="gar381"]This connecter seems to fit Peter's PCB as well.

GARY[/quote]

Would you Adam & Eve it..!!

 

[capnspoony]

Im chompin at the bit for these kits. I was wondering if anyone else was planning on using Ptowns 990 kits for the DOA's. I checked the 990 threads but it seemed that a lot of people were having a lot of problems getting their DOA's up and running. Now that I have 24 kits-- I'm a little concerned that my skills may not be up to par.

--Richie

 

[Rob Flinn]

[quote author="Walrus"]Unfortunately RS only seem to do stock number 483-865 now, which is an 18 way connector. It is the correct pitch but will have to be cut down.[/quote]

Why not just stuff a bit of old pcb in it to blank off the unused pins.

 

[peter purpose]

Jayzus... someone in the USA sort it out for these poor brethren.

 

[Reptil]

I found it through www.mercateo.com. RS Components is their reseller in Holland. So, since Mercateo didn't want to ship, I asked RS Components.
Article number is: 108EL-2508740065
Hope this helps.