Studio Reference Amplifier

[btesize]

PSU Board

Hi everbody
I draw again apex psu-10 board. is there any error ?

 

[remle114]

AX14

Ooops!
Wrong post

 

[thole]

Hi everbody
I draw again apex psu-10 board. is there any error ?

Hello btesize.
Can you share rectifier macros for sprint?

 

[btesize]

Hello btesize.
Can you share rectifier macros for sprint?

okey no problem
rectifier macros

 

[thole]

Thanks for share....

 

[thimios]

Hi everbody
I draw again apex psu-10 board. is there any error ?

Can you share pdf?

 

[Rick G]

Btesize
Looks Good. Check the distance between the pads for the 2.2K Trimmers. i had to move both of mine closer, to 5mm between pads to fit my trimmers.(Bourns 3386F)

 

[btesize]

Btesize
Looks Good. Check the distance between the pads for the 2.2K Trimmers. i had to move both of mine closer, to 5mm between pads to fit my trimmers.(Bourns 3386F)

Hi Rick G
Thanks for warning I fix it distance

 

[btesize]

almost done.

 

[still4given]

Here's a pic of my completed PSU. It works well but the footprint is pretty large. It will take up a lot of real estate in a case. I haven't tried it with a load yet but I will probably need to add a small heatsink to the angle.

 

[ivanlukic]

Nice PSU!

 

[still4given]

GIF , pdf and sprint-file:

Hi Aleksandar,

Have built this amp but I have a couple questions about the Zobel/protection circuit. Is the small board being powered from the main PCB? I see the two AC nodes. Do those come directly from the transformer? Also, what wattage is the 560R resistor? One more thing. How important is the 47uf/100v? Can it be 100uf?

Thanks, Terry

 

[still4given]

Sorry, It didn't quote very well. I am attaching a pic. I see two AC inputs but they are shorted together. Shat is feeding them? Also there is a resistor labeled R rel. What is that?
Also same question on the 560R, what wattage is required?

Thanks, Terrry

 

[smartx21]

Sorry, It didn't quote very well. I am attaching a pic. I see two AC inputs but they are shorted together. Shat is feeding them? Also there is a resistor labeled R rel. What is that?
Also same question on the 560R, what wattage is required?

Thanks, Terrry

Have you seen this http://www.diyaudio.com/forums/solid-state/173462-studio-reference-amplifier-176.html#post4179544 and this http://www.diyaudio.com/forums/solid-state/173462-studio-reference-amplifier-178.html#post4183131 ?

 

[still4given]

Those links don't work for me. They just go to the top of the page. Could you tell the the post numbers?

Thanks, Terry

 

[smartx21]

Those links don't work for me. They just go to the top of the page. Could you tell the the post numbers?

Thanks, Terry

Posts 1757 and 1780. I think they will answer your questions.
And that capacitor is simply a filter. So I think 100uF will do the job better.

 

[still4given]

This amp is from post 1757. I see in post 1780 that the 560R is 2w. Thanks, that answers the question about the resistor but what about the two 55ac connections. Where are those fed from? They are shorted so they can't come from both sides of the transformer. Also, what about the resistor labeled Rrel on the small board. What is the value?

Thanks, Terry

 

[rohin]

This amp is from post 1757. I see in post 1780 that the 560R is 2w. Thanks, that answers the question about the resistor but what about the two 55ac connections. Where are those fed from? They are shorted so they can't come from both sides of the transformer. Also, what about the resistor labeled Rrel on the small board. What is the value?

Thanks, Terry

hi,that resistance was hot 560r when i check after made.rrel mean relay +- voltage.which you have to connection from amp rel +- ok. ac ac terminal for operating voltage for protection circuit.leave the 0 (gnd) of transformer and connect other two wire here or connect single ac that your will.that 560r value depend on your relay coil resistance i use 780r.you have to alert about transistor of that protection.

 

[still4given]

So rrel is only as needed?

Thanks

 

[smartx21]

This amp is from post 1757. I see in post 1780 that the 560R is 2w. Thanks, that answers the question about the resistor but what about the two 55ac connections. Where are those fed from? They are shorted so they can't come from both sides of the transformer. Also, what about the resistor labeled Rrel on the small board. What is the value?

Thanks, Terry

Try to see the PRO(tection) circuit like this...