LED array protection using LM338T

Status
Not open for further replies.
J

jpack

Newbie level 1
Joined
May 15, 2008
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,289
I have 12 parallel sets of 4 High powered infrared LEDs in series for a total of 48. I want to use a LM338T in each of the 12 parallel circuits to regulate current and voltage. Question: Will the LM338T protect the circuit if one of the LEDs is shorted out or will the current increase to a disastrous level and kill one or more of the remaining 3 LEDs? Normally losing an LED or two would be no big deal but these are enormously expensive.

Thanks for any assistance provided.
 

Re: Led Array Protection

Only an individual current regulator could protect the LEDs in this case. Furthermore, the nominal current capacity of the LEDs depends on keeping a maximum enviromental temperature. It may be necessary to supervise it for achieving a full protection.

Is there any indication of a considerable risk of getting shorted LEDs?
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…