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phy1970  
#1 Posted : Thursday, November 24, 2016 2:34:40 PM(UTC)
phy1970

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Joined: 7/15/2011(UTC)
Posts: 23
Location: Denmark

Hi

I recently received 2 LCBPS´s in version 2.0.

It seems that R5 and R6 are missing from both kits...or are they not needed in version 2.0?

Regards

Phy1970
Denmark



phy1970  
#2 Posted : Tuesday, November 29, 2016 7:28:28 AM(UTC)
phy1970

Rank: Member

Groups: Member
Joined: 7/15/2011(UTC)
Posts: 23
Location: Denmark

I found som R240 resistors and mounted them as R5 and R6.

The boards are working.

Both boards are fed with 2*15V AC.

On both boards I can regulate the positive voltage to the desired 12-15V but I can not regulate the negative voltage to below 19V on either board.

What should I look for?


Regards

Phy1970
Denmark
Brian Donegan  
#3 Posted : Thursday, December 1, 2016 6:13:32 PM(UTC)
Brian Donegan

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Sorry about the missing resistors.

Can you double-check that IC2 on both board are LM337?
phy1970  
#4 Posted : Sunday, December 11, 2016 9:27:28 AM(UTC)
phy1970

Rank: Member

Groups: Member
Joined: 7/15/2011(UTC)
Posts: 23
Location: Denmark

Hello

All 4 IC´s are LM337.

Regards

Phy1970
Denmark
phy1970  
#5 Posted : Monday, December 19, 2016 9:08:22 AM(UTC)
phy1970

Rank: Member

Groups: Member
Joined: 7/15/2011(UTC)
Posts: 23
Location: Denmark

Hello

All 4 IC´s delivered with the kits are LM337.

Unfortunately they are all soldered to the boards.

Is it possible to replace two of the LM337´s with LM317 as IC1´s?

Regards

Phy1970
Denmark
Brian Donegan  
#6 Posted : Tuesday, December 20, 2016 6:50:23 PM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,782
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 126 time(s) in 121 post(s)
I will contact you directly.
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