[time-nuts] HP5328A LEDS driver transistor

Hal Murray hmurray at megapathdsl.net
Mon Jan 23 00:26:18 EST 2012


> Ultra-conservative and "overkill" but two of the nine failed.  OK it is 30
> years old (made is '83, I think) 

Use your fingers or similar as a quick-check thermometer.  Are working ones 
hot? warm?  If not, power/temperature is not likely to be the problem.


My guess is that somebody picked that transistor because it could handle the 
current and was conservative at the power dissipation.


-- 
These are my opinions, not necessarily my employer's.  I hate spam.







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