Electronic Protection And Reliability - Halcro DM38 Owner's Manual

dm38

Electronic Protection and Reliability

Electronic protection circuitry and amplifier reliability, alas, is an area sadly neglected
by many high-end audio amplifier designers. HALCRO™ has paid a great deal of
attention to this area.
Components
Our components are selected for not only performance but reliability as well, for
example:
All Halcro electrolytic capacitors are rated at a minimum of 105 degrees C instead
of the usual 85 degree rating. The operational life of electrolytic capacitors is
severely shortened at temperatures near the maximum temperature rating. This is
shown in the table below.
All Halcro integrated circuits are at least "industrial grade" rather than the usual
"commercial grade". Industrial grade components are rated at least from –40
degrees C to +85 degrees C whereas commercial grade components are only rated
from 0 to 70 degrees C. In addition, the electronic specifications of industrial grade
components are superior to commercial grade.
Electrolytic
capacitor
temperature
rating
85 C (most
commonly used)
105 C (used in
Halcro
amplifiers)
Typical data from a highly respected manufacturer.
Considering that most amplifiers run at significantly elevated temperatures, it can be
seen from the table, that the Halcro high temperature rated capacitors are highly
advantageous compared to the standard 85 degree rated devices.
Mean lifetime at
40 degrees
Centigrade
50,000 Hours
180,000 Hours
Mean lifetime at
85 degrees
Centigrade
2,000 Hours
8,000 Hours
Mean lifetime at
105 degrees
Centigrade
(0)
2,000 Hours
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