Rank: Member
Groups: Member
Joined: 7/15/2011(UTC)
Posts: 24
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
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 7/15/2011(UTC)
Posts: 24
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
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
|
Sorry about the missing resistors.
Can you double-check that IC2 on both board are LM337?
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 7/15/2011(UTC)
Posts: 24
Location: Denmark
|
Hello
All 4 IC´s are LM337.
Regards
Phy1970
Denmark
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 7/15/2011(UTC)
Posts: 24
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
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
|
I will contact you directly.
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
