Electronic Protection And Reliability - Halcro Eclipse mono Owner's Manual

Electronic Protection and Reliability

Electronic protection circuitry
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 not only for
performance but reliability as well. For example all
Halcro electrolytic capacitors are rated at 105°C or
higher, instead of the usual 85°C rating.
The operational life of electrolytic capacitors is
severely shortened at temperatures near the
maximum temperature rating. This is shown in the
table below.
Electrolytic capacitor temperature
rating
85°C (most commonly used)
105°C (used in Halcro amplifiers)
Table 2 - Typical data from a highly respected manufacturer
and amplifier As most amplifiers run at significantly elevated
temperatures, it can be seen that the Halcro high
temperature
advantageous compared to the lower temperature
rated devices.
Additionally, all Halcro integrated circuits are at least
"industrial grade" devices, designed to operate from
at least −40°C to +85°C. The more commonly used
"commercial grade" devices are only specified to
operate from 0°C to 70°C and generally have lower
grade specifications.
Mean lifetime at 40ºC
50,000 hours
180,000 hours
rated capacitors
Mean lifetime at Mean lifetime at
85ºC 105ºC
2,000 hours 0 hours
8,000 hours 2,000 hours
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are highly