On Wed, 24 Apr 2013 23:44:13 -0700 (PDT), " firstname.lastname@example.org"
Having been it the energy retrofit market for years before retiring
this has been an on going issue since electronics have played a bigger
of manufacturing. You have so much more potential for failure when
you add in the number of additional components. In the beginning of
electronic ballast installations, on many jobs the failure rate was so
high the manufacturer would end up paying you to go redo the job. You
wanted to be sure you bought from major suppliers.
On Wed, 24 Apr 2013 18:16:17 -0600, lektric dan wrote
Many of the LED's take far more current, some I've used take several amps.
LED arrays look like a single device, but actually are many smaller LEDs
inside a single package. I've used arrays (Cree) that take 48V at about
Note that LED's are current, not voltage dependent devices. A proper power
supply will be current regulated.
Expect that the burned units had plastic casings on their
power supplies. Metal casings bleed off heat much better,
which helps to keep the enclosed circuits from burning out.
Most of the failed T-8 (cheap) fluorescent ballasts I've seen
were plastic boxes. Failed metal-enclosed ballasts are
almost dead-on reliable.
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