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cool thanks. I am in the process of making a list with all the part #'s for mouser so it's easier for all of us in the US. The only thing that is a pain is that a bunch of the manufacturer part #'s don't exist on mouser, so how much am I aloud to vary on these values? I see most things have a very tight tolerance so I'm assuming not much, if it all. I'd like to get everything in one shot from the same place but alot of the stuff isn't stocked.
 
Power Supply Electronic Components                             Mouser Part #'s

             
R1                5K1       RS 151-296                      594-5063JD5K100FT
R2              150R        RS 487-5533                    66-RC55LF-D-150
R3                4K7       RS 151-000                      594-5063JD4K700F
R11,R21           3K9       RS 151-016                   594-5063JD3K920F
R12,22,32,42   240R         RS 487-5218               66-RC55LF-D-240          
R13,23                2K2   RS 151-088                    594-5063JD2K200F
R31,41                2K4   RS 150-990                    594-5063JD2K430F
R33,43                1K5   RS 151-094                    594-5063JD1K500F
RV1,2,3,4,5   1K0           RS 154-2397                81-PV36W102C01B00
C1 to 4     10nF 100V   RS                                
C11 to 14   10nF 100V   RS                              
C21 to 24   10nF 100V   RS                              
C31 to 34   10nF 100V   RS                              
C41 to 44   10nF 100V        RS 537-3038            667-ECQ-V1103JM                    
C9,16,19,26,29   100nF 63V                              
C36,39,46,49   100nF 63V     RS 108-2700          667-ECQ-V1104JM3
C17,27,37,47   100uF 35V     RS 449-1056          667-EEU-FC1V101  
C18,28,38,48   1000uF 35V    RS 315-0754         667-ECA-1VM102B    
C6,8           1000uF 100V   RS 228-7136             667-ECA-2AM102
C15,25,35,45   10,000uF50V   RS 339-7048         667-ECO-S1HP103CA
D1,2,11,12,21,22              
31,32,41,42   1N4002         RS 628-8953             625-1N4002-E3/73
BR1   1.5A                   RS 629-5169                  625-W08G-E4
BR11,21,31,41   25A     Farnell 954-9722             627-D5SB80-7000
IC1         TL783            RS 661-6232                  595-TL783CKCSE3
IIC11,21,31,41     LM350T    RS 535-9408           DigiKey LM350TNS-ND
Reg. Insulator     Sil-Pad   RS 468-2729           532-53-77-9   or   DigiKey BER114-ND
Heatsink                     RS 507-4769              532-513002B25G   thanks grantlack  
Reg. screw kit               TR Fastener                  what is this?
Output Connector             RS 101-5384              651-1868128
Input Connector              RS 361-7752                DigiKey A98340-ND
       

     
Electrical wiring                
             
Mains switch               RS 351-162                            
IEC plug                   RS 261-5884          
Fuse holders               RS 359-5961        
LED Bezels                 RS 262-2999        
LEDs                       RS 228-5764          
IEC Insulator    cover     RS 211-0907        
Fuse insulator    cover    RS 408-432          
Fuse   1.6A                RS 537-1357          

Receptacle   mains wiring  RS 488-1229        
Receptacle cover   mains wiring   RS 488-1314          
Eyelet for earth   connection   RS 433-034          
             
7 Pin Neutrik   panel socket   RS 448-7215            568-NC7FDL1        
7 Pin Neutrik    cable plug    RS 364-6340              568-NC7MXX
7 Pin Neutrik   cable socket   RS 364-6334            568-NC7FXX
             
Hook up wire   set of 9 colours  
Cable ties   and clips              
Stand-offs                
Screws + nuts


I had to source a few things from DigiKey because they weren't in stock on Mouser and I couldn't find a suitable replacement. All the stuff I didn't list was kind of up to you, plus there were no matching part numbers at Mouser. It would be awesome if someone would add to this, I'm just so dam tired of looking. Can someone please confirm that all of this info is correct? Thanks. -Steve
 
more mouser #'s:

heatsink        532-513002B25G
sil pads         532-53-77-9

note: mount the TL783 to the heatsink BEFORE mounting to board, otherwise the mounting holes will be misaligned.
 
Buffstuffbuddha said:
             
[Reg. screw kit               TR Fastener                  what is this?
Click to expand...


It is the supplier that I get the screws from.

The silpad kit in the above list serves for the entire psu. I supplied what I had in my stock so far but it included everything.

RS discontinued some of the components after I posted the first list but I thought I updated the last one. I'll check it again.
 
Buffstuffbuddha said:
thanks grant. Do I need to order only one sil pad or 1 for each regulator? Sorry, this is my first PSU build.
Click to expand...

insulate all regs, unless you likey the magic smoke?  :eek:
i'll probably be trying out some screws of the plastic variety, didn't like the insulating washers i ordered one bit.
 
One thing I am a little confused on is the input/output setup between the PSU board and the rack PCB. Obviously the 10 point connector goes on the board and the transformer leads are connected directly to this. These can be screw terminal or a plug correct? Couldn't I just solder the wires directly to the board if I wanted to?   
Now with the output from the PSU to the rack, instead of using of using 8 pin molex couldn't I use 4 of these (on both boards of course)? Would they fit on the board? Also, They could just be soldered directly to the board.
http://www.mouser.com/Search/ProductDetail.aspx?R=1868128virtualkey65100000virtualkey651-1868128#AB

Then the the leads from those connectors would be soldered to these, which are then mounted into the panel.   
http://www.mouser.com/Search/ProductDetail.aspx?R=NC7FD-L-1virtualkey56810000virtualkey568-NC7FDL1

Then the two are connected with a cable using these ends.
http://www.mouser.com/Search/ProductDetail.aspx?R=NC7MXXvirtualkey56810000virtualkey568-NC7MXX

I only need to physically run a chassis ground to the PSU chassis because the 2 chassis' would be connected through the cabling? Also, there is no PSU in the rack case so it doesn't need a separate chassis ground, it would still be utilizing the one from the PSU?
I just want to be sure.

Any recommendations for a specific thermal compound to use?

The 7 pin panel connector on the rack will not get soldered to the PCB because the PCB only has 6 holes right? Is this for if you don't want to use the 24v version of this rack? If we are using the 24v version, we just run leads from the panel mount connector to the to the 8 pin connector on the PCB right?
 
I got my PSU PCB assembled with parts from DIY Parts Supply. I don't have the case yet (should have it in about 2 weeks), but I did put a temporary cable together and powered up my recently built 51x rack with two Classic API VP26's in it (also recently assembled and with the gar2520 DOA kits). I put a 1 kHz tone through the modules to test everything out and put a scope on the outputs. I got a whopping 67.5 Vpp (23.2 Vrms) on the output before symmetrical clipping! That would certainly drive my high-biased Studer A800 into submission! Holy cow Jeff, I can't wait to get some mic's hooked up to these preamps!

One thing though on the PSU, the +24 VDC is steady at 22.1 VDC and the trim pot has no effect. Do you think it is the LM350 or the variable resistor itself that is bad? For now I have set the -24 VDC to match and I really haven't seen any issues, but I would like to get it proper.

VP26-out.JPG


DSC01741.JPG


DSC01742.JPG
 
grantlack said:
Buffstuffbuddha said:
thanks grant. Do I need to order only one sil pad or 1 for each regulator? Sorry, this is my first PSU build.
Click to expand...

insulate all regs, unless you likey the magic smoke?  :eek:
i'll probably be trying out some screws of the plastic variety, didn't like the insulating washers i ordered one bit.
Click to expand...

Yes, this is VERY IMPORTANT. The tabs with the screw holes in them are actually vOut on the voltage regulators. You do not want them touching each other (or GND or vIn). They must be insulated. I see a lot of photos with one large heatsink for the 4 -/+ regulators, so I wanted to stress this point. If there is no insulation, yes the regulators will smoke. Note that the screws will conduct also and you will need to ensure that the threads or the screw head IS NOT touching the tab on the regulators. They make special non-conductive washer/inserts for this.
 
There is a heatsink insulator kit from Mouser (532-4880SG) that works well.
It has the insulator, screw, nut, and the special flanged insulating washers
 
Hey guys!

Well i am proud to say, that i have fired up the thing just fine with NO smoke haha! She works beautifully.

Question though: My unit takes about one min to get down to 2ish volts when i turn it off. Is this normal?

Second: What to do with the green/yellow wire on the power tranny from jeff? I noticed Sahib suggested taking it to star gnd when using his transformers... same go for jeff's?

Thanks.
 
guitarguy12387 said:
Question though: My unit takes about one min to get down to 2ish volts when i turn it off. Is this normal?
Click to expand...
with no modules installed (= nearly no load) this is normal.

guitarguy12387 said:
Second: What to do with the green/yellow wire on the power tranny from jeff? I noticed Sahib suggested taking it to star gnd when using his transformers... same go for jeff's?
Click to expand...
yes
 
For the 1K Variable resistors you have these listed.
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=searchProducts&searchTerm=154-2397

I am using these
http://www.mouser.com/ProductDetail/Murata/PV36W102C01B00/?qs=ifmdR88tEJ/qAwsbWNJBJQ%3d%3d

Does it matter that on the ones I have they are 3 linear pins and on the ones you guys selected from RS-Online are the 2 back pins and 1 front pin in the center? I see that the PCB can fit both, I'm just unsure if it matters.
 
You don't use plastic screws on components that heat up and certainly not on this one. Just buy an insulator kit with metal screws.
 
Will these heatsinks work for the lm350t regulators?

http://www.allelectronics.com/make-a-store/item/HS-122/TO-220-HEATSINK/1.html

I'm a little confused on how to wire the transformer up, are there any diagrams showing how everything should be wired? How do I know which wires carry which voltage?

Should I be jumpering pin 1 to chassis or pin 1 to ground on the rack PCB? I've been reading and I keep hearing both.



 

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