PeeCeeBee PSU GB

[ksjung88]

I need 2 PCBs.

Thanks, Shaan.

 

[shaan]

Update:

I have ordered a batch of 50 PSU PCBs. Expecting them by 20-23 Jan.

 

[Kana711104]

1 for me

 

[shaan]

Update:

Boards will be shipped from fab on 30th. Expecting them at hand by 2-3 Feb.

 

[shaan]

Update:

PSU PCBs arrived.

 

[ksjung88]

I found the page do comprasion and analysis for relay Amplimo and Omron.
Speaker DC protection with relays

Thank you for the link. It helps a lot.

 

[supernet]

Shaan: any alternatives to BC546B/BC556B and KSE340/350 transistors? Mouser is out of them

 

[jorgovanko]

Try TME.

 

[Kana711104]

Got my PSU PCB today , thanks shaan .
Board looks rigid and copper layout is very thick.

 

[platon.rado]

C10,C9 is missing. where to buy ??

 

[shaan]

Hi Platon.


If you can't find 10uF nonpolar then you can use two 22uF normal polarised electrolytics in series with their negative legs joined, per side.

 

[platon.rado]

Thanks

 

[platon.rado]

Power supply works.3V DC protection sensitivity .

 

[shaan]

 

[ksjung88]

I've finally read through this thread and put down what seem to be important. one question before ordering the parts, I have one 600va (40 dual secondary) trans and two psu. Which is recommended, individual psu for each channel(15000*4) or one psu for two channel with larger capacitors(22000uf or higher *4)? The psu board has two channel on it. That's why I wonder which is better.

 

[shaan]

Individual psu for each channel with 15000x4 and one speaker protection segments populated on each psu.

 

[ksjung88]

Thanks...one for each. =)

 

[shaan]

Shipping information updated here > Post 1661

 

[supernet]

Any alternative to "hard to get" MUR 1540/1560 diodes?

 

[shaan]

Hi Supernet.

You can use F30UA60S which are 30A rated.
Or you can use an off-board bridge rectifier module and connect its +out to cathode of D1 and -out to anode of D8.

edit: if you use the off-board bridge, connect the transformer's AC outputs to anode of D1 and cathode of D8 via a 1Kohm safety resistor in series with each AC connection (two resistors needed). You can use one AC output for each connection.