Custom Blower Designs
Advancements in processing power dictate a greater
need for effective thermal dissipation for electronics systems with
high impedance and component density. In computer applications this
is most evident, as multiple processors can be designed in close
proximity to each other in an enclosed system. For this reason,
JMC has developed various custom-built, high-performance blower
applications and redundant blower trays to provide superior heat
dissipation while overcoming system impedance.
- 80 CFM Free Air
- 5000 RPM
- 48 VDC
- High Speed/ High Pressure
- High Reliability/ Dual Ball Bearing System
- PWM
- Tach Output
- 12 oz-inch Torque, excellent to back pressure
- Customizable Housing and Size
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Introducing the 60x25mm Panther Fan - You won't hear it coming!
JMC's new Panther fan is ready to pounce on fan
noise - introducing the 60x25mm Panther fan that is so quiet, you
can hardly hear it.
In traditional fans, the most dominant acoustic noise is due to
the fans torque characteristic. The stator excitation is a
square wave that is switched on and off by a specific degree value
before and after the peak torque position. This excitation causes
a small amount of ripple in motor torque, producing an audible noise
caused by the lower frequency commutation operation. Each small
torque causes a minute flexing of the entire fan structure and results
in an audible ticking noise while the fan is operating.
JMC addresses this issue with the Panther fan technology.
By operating at a much higher frequency level, the 60x25mm Panther
fan produces a soft commutation that results in a quiet operation
that is above the audible range for human hearing. This technology
can also be utilized in other JMC fan sizes.
- 60x60x25mm
- 13-36 CFM
- 3000-7000 RPM
- 10.0-13.2 Vdc
- Built in variable speed with thermistor
- Thermal shut down circuit
- Tach or locked rotor output signals available
- Preprogrammed basic frequency is 25KHz
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Riddle Me This - Enter to Win
Email us your answer to the riddle below by replying to this message.
If you are correct, we will enter your name into a monthly dra wing
for a free JMC polo shirt!
Special Bonus: Win 25,000 AAdvantage miles on American
Airlines! Each time you answer one of our riddles, your name will
be added to the drawing. If you answer correctly, your name will
be entered twice. We will select a winner in November 2003
(terms).
How long is a rope that is 2 yards shorter
than another rope that is three times the length of the first
rope?
The answer to this month's riddle will be posted
in the next newsletter.
Congratulations to Michael Berktold of Intel,
our October shirt winner!
October Riddle: There are 100 buildings along a
street. A sign maker is ordered to number the buildings 1 to 100.
How many "9's" will he need? Answer: The answer is 20 (9, 19, 29,
39, 49, 59, 69, 79,89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 =
20 "9"s).
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