[time-nuts] HP5328A LEDS driver transistor
Hal Murray
hmurray at megapathdsl.net
Mon Jan 23 05:26:18 UTC 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.
--
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