Lightfoot said...
What is a fixed 12 volt regulator that can handle five or more amps?
Cheapest method is a hacked computer power supply.
Easily 30+ amps at 12V.
Knight.
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i used it in a recent application that required 2A continuous. the tech doc states that it can handle 5A w/ 1.5v dropout. but in my 2A app it really cooks so use a large heatsink.
Here's the part numbers for regulators that fit your requirements that digikey spits out:
5Amp regulators:
LT1084, LM2587, LM2588, LM2677, LM2678, LM2679
7.5Amp regulators:
LT1083
with a 60 watt regulator, you should think about getting a switching regulator (LM25 & LM26 series) since switching regulators generate less heat (and are more efficient) than linear regulators. Though linear regulators in general are easier to use.
PS did you contact the company about constant current diode availibility? Is it possible to pick up single quantities of CCDs?
LM1084 bench test, 10uF tantalum on ouput
dc supply @ 14v pushing 5.3A
regulator @11.96V pushing 5.2A and smoking my 2ohm resistor. nm that was my antistatic pad.
Lightfoot
Posts: 228
Comments
Cheapest method is a hacked computer power supply.
Easily 30+ amps at 12V.
Knight.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-
This message transmitted with 100% recycled electrons.
-=-=-=-=-=-
Gravity doesn't exist. The Earth sucks.
-=-=-=-=-=-
Make a man a fire, and he will be warm for the night.
Light the man on fire, and he will be warm for the rest of his life.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-
i used it in a recent application that required 2A continuous. the tech doc states that it can handle 5A w/ 1.5v dropout. but in my 2A app it really cooks so use a large heatsink.
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engineer, fireman, bowler, father, WoW addict [noparse];)[/noparse]
5Amp regulators:
LT1084, LM2587, LM2588, LM2677, LM2678, LM2679
7.5Amp regulators:
LT1083
with a 60 watt regulator, you should think about getting a switching regulator (LM25 & LM26 series) since switching regulators generate less heat (and are more efficient) than linear regulators. Though linear regulators in general are easier to use.
PS did you contact the company about constant current diode availibility? Is it possible to pick up single quantities of CCDs?
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·1+1=10
dc supply @ 14v pushing 5.3A
regulator @11.96V pushing 5.2A and smoking my 2ohm resistor. nm that was my antistatic pad.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
engineer, fireman, bowler, father, WoW addict [noparse];)[/noparse]
A typical 12V outdoor lighting transformer provides about 10A. Some are rated higher, but I think they
start at about 10A.
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Beau Schwabe
IC Layout Engineer
Parallax, Inc.