Rank: Member
Groups: Member
Joined: 1/22/2011(UTC)
Posts: 2
Location: California
|
Hi,
I intend to use the + half of Placid BP v.2.1.2 for powering Buffalo II. Adjusting VR2, I can only get a maximum of .228v across R2.
Russ & Brian, can you provide some suggestion on part changes so that this v.2.1.2 regulator will output > 350ma. Thanks.
(I happen to buy the wrong board to power the Buffalo II, but I think this Placid BP can be made to work.)
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
|
One possibility would be to use a ~4V zener (property oriented opposite of the LED) in place of D5. Or even just two LEDs in series. Edited by user Sunday, January 23, 2011 8:26:33 AM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 1/22/2011(UTC)
Posts: 2
Location: California
|
Thanks for the couple of suggestions.
My electronics is limited, but I thought there might be some with D5. Adjusting VR2 to get the max output (228ma), D5 LED goes very dim or maybe off. Since my inital posting, I have tinkered changing R12 from 2k to 1.3k. I am able to get .350v across R2 with room to spare (able to get more current output with further VR2 adjustments). D5 LED is still dim/off, but the Placid BP is supplying 5.5v, 300ma with 50ma shunting across R14.
Question: Should I abandon the R12 change and pursue one of your suggestions ? Presently, I am concern about stressing any of the components, and compromising the circuit performance you have design. Thanks again. Henry
|
|
|
|
|
|
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.
