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LM340 Regulator?

ShuRugal

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Feb 2, 2011
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So, i salvaged 7 LM340 regulators out of some junk audio equipment at work today. Are they any use for making laser drivers? I am not extremely well-versed in the details of electronic components, so comparing datasheets with the 317 tells me nothing useful. can the 340 be used in the same applications?
 

Cyparagon

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Sep 12, 2007
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It doesn't look like they are variable regulators, so no.
 

Coherent Light

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Jul 17, 2010
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Ok then thats too bad the LM340's can be used as a current source, but it's not practical in Our interests to try an use one based on Voltage and Load requirements. LM350's on the other hand would be just fine for a high current draw laser diode.
 




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