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Welcome to JMC's Thermal Design News. The purpose
of our newsletter is to update customers about our ongoing projects.
Read ahead to
see what's happening at JMC.
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JMC's new microcontroller fan design provides customers
with improved fan performance, lower current consumption, ehnanced
design flexiblity, and better repeatability. Instead of using an
analog motor controller, JMC incorporates an 8-bit PIC microcontroller
into the fan that requires firmware algorithms. The most notable benefit achieved with our microcontroller fans is that we have reduced the tolerance level in fan performance to approximately 1%. With analog fans, you can measure a 10% difference in rated speed of the same form factor. With the improved tolerance level, we can manufacture an extremely precise and energy-efficient fan. Additionally, these fans offer greater flexibility as other features can be designed into the fan quickly such as speed changes, tach changes, timing changes, and PWM. The following form factors will be available in
July from JMC: 92x38mm DC fan, 120x38mm DC fan, and our 97x33mm
Blower. Each will be fixed speed with a soft start circuit built
in to prevent an over-current spike at start up. |
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JMC's Transition to Lead Free Products The Restriction of Hazardous Substances in Electrical and Electronic Equipment (ROHS) Directive aims to protect human health and the environment through the restricted use of certain hazardous substances. JMC has established an agressive timeline in order to meet ROHS requirements. Our objective to customer's is to develop reliable and cost efficient lead-free products in advance of the ROHS deadline which is July 1, 2006. To learn more about our product transition,
CLICK HERE to download our Lead Free Roadmap. |
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JMC's Engineering Manager, Abe Arredondo, will
be presenting a technical paper
To view this technical paper, click here. |
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Fixed Vane Design Improves Airflow A fixed vane fan design indicates that the air
moving device contains two stages, one is a fi JMC currently offers a 60x38mm Fixed Vane Fan:
click here to view specs. Our engineering team is in the process of tooling
a 120x38mm fixed vane DC fan that will perform at 190CFM and will
be available in 60 days. Please
contact us today for information on sample availability. |
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Riddle Me This - Enter to Win
What time is it when the number of minutes since midnight is nine times the number of minutes before noon? Congratulations to our Mar/April winner Ray Meisezahl
of Jabil who won a JMC polo shirt! Mar/Apr Riddle:
A man, when asked by his niece how old he was, replied,"My age is
now four times yours, but five years ago it was five times yours."
How old was he? Answer: 80 years old. |
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The
software is implemented on the fan and we continue to use single
phase motors.
xed
blade set (or stator) and the other is a standard fan impeller.
The fixed blade set is designed to direct the flow patterns into
the impeller, reducing turbulence and increasing airflow. As the
fan blade is rotating, the fixed blade set straightens the airflow
that is output. This design can increase airflow by more than 20%
over a similarly sized fan.
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