JMC Introduces High Frequency Pulse Width Modulated Fans in a Multitude of Form Factors

AUSTIN, TX - March 16, 2004 -- JMC Products, a leading manufacturer and supplier of thermal cooling solutions, is pleased to announce the production availability of a host of high frequency Pulse Width Modulated (PWM) fans that perform at low noise levels by eliminating the power switching noise of the fan. The motor commutation noise is eliminated with high frequency PWM as the coils of the fan are being switched with a frequency above 20 kHz, which is outside the human audible range.

The speed of the fan is controlled by an external PWM signal. The JMC PWM ramps up linearly from a 20% duty cycle up to the fan's maximum rated speed. Because the fan can run at lower speeds it is more energy efficient and will therefore have a longer life.

"JMC continually strives to develop products that meet the demanding thermal and acoustic requirements of the electronics industry. Our newly developed high frequency PWM fan design provides our customers with the advantages of improved acoustics, enhanced power efficiency, and superior reliability," states Jerry Johns, VP of Engineering & Sales.

JMC's high frequency PWM fans are available in a 70x15mm, 70x25mm, 80x25mm, 92x25mm, 120x25mm, and a 120x38mm. The high frequency PWM motor drive has also been implemented in JMC's 97x33mm blower design. For high performance high current fan and blower applications JMC has implemented a soft start circuit that limits the in-rush current when the air-moving device starts up in high duty cycles.

Pricing & Availability
High frequency PWM fans are available now to OEM and distribution customers and range in price from $4.00 to $15.00 depending on fan size, features, and quantities ordered. All JMC products are guaranteed to be free of defects in material and workmanship when operated under specified temperature, humidity, and voltage ratings. For further information on the company and its thermal solutions, call 1-800-580-6688.

About JMC Products
JMC Products is a thermal solution provider located in Austin, Texas with offices worldwide. The company is focused on developing thermal products to increase the performance, reliability, and flexibility of networking, storage and server systems. JMC's product line features AC and DC fans, heat sinks, blowers, the revolutionary patented Intellifan™, and cooling solutions for all AMD™ processors and Intel® processors. For additional information on JMC, visit www.jmcproducts.com.


For More Information Contact:
JMC Products
10315A Metropolitan Drive
Austin, Texas 78758
(512) 834-8866 V
(512) 834-8868 F
info@jmcproducts.com
http://www.jmcproducts.com