[HomeBrew] LM317T 3 terminal regulator tab isolated?

[N1KHB at aol.com]

Hi Ray,
   The metal tab is usually if not always connected to the  center pin 
regardless of pin function. You can check with an ohmmeter. The only  isolated 
ones are covered in a coating. Otherwise you need an insulating/heat  
dissipation kit or an isolated heat sink.
 
Best,
Sonny N1KHB
 
 
 
 
In a message dated 1/29/2014 11:41:54 A.M. Eastern Standard Time,  
w4byg at att.net writes:

**  Please do NOT cross-post messages when posting to HOMEBREW **

In  scanning thru the 40 pages of specs on the LM317T, I am unable to  
discern
if the mounting tab is isolated from the terminals.  In other  words, can 
the
tab be bolted directly to the chassis for heat sinking,  without shorting 
out
one of the terminals?

Anyone know one way or  the other?

Your attention is appreciated.

Ray,  W4BYG

Ineptocracy (in-ep-toc-ra-cy) - a system of government where the  least
capable to lead are elected by the least capable of producing, and  where 
the
members of society least likely to sustain themselves or succeed,  are
rewarded with goods and services paid for by the confiscated wealth of  a
diminishing number of  producers

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