Instrumentation: Test and Measurement Methods and Solutions - VE2013Analog Devices, Inc.
Tilt Measurement: Tilt measurement is fast becoming a fundamental analysis tool in many fields including automotive, industrial, and healthcare. Navigation, vehicle dynamic control, building sway indication, and motion detection systems all rely on this simple, cheap, and precise way of angle monitoring. MEMS accelerometers are better suited to inclination measurement than other methodologies. This session will address the challenges encountered when designing a dual-axis tilt sensor using a MEMS accelerometer including measurement resolution, signal conditioning, single- vs. dual-axis, angle computation, and calibration.
Impedance Measurement: The measurement of complex impedance is widely used across industrial, commercial, automotive, healthcare, and consumer markets, and can include applications such as proximity sensing, inductive transducers, metallurgy and corrosion detection, loudspeaker impedance, biomedical, virus detection, blood coagulation factor, and network impedance analysis. This session will cover the concepts, approaches, and challenges of performing complex impedance measurements and will present a system-level solution for impedance conversion.
Weigh Scale Measurement: Most common industrial weigh scale applications use a bridge-type load-cell sensor, with a voltage output that is directly proportional to the load weight placed on it. This session examines the basic parameters of a bridge-type load-cell sensor, such as the number of varying elements, impedance, excitation, sensitivity (mV/V), errors, and drift. It will also discuss the various components of the signal conditioning chain and present solutions with high dynamic range.
Liquid Sensing: Visible light absorption spectroscopy and colorimetry are two fundamental tools used in chemical analysis. Most of these light-based systems use photodiodes as the light sensor, and require similar high input impedance signal chains. This session examines the different components of a photodiode amplifier signal chain, including a programmable gain transimpedance amplifier, a hardware lock-in amplifier, and a Σ-Δ ADC that can measure a sample and reference channel to greatly reduce any measurement error due to variations in intensity of the light source.
Gas Sensing: Many industrial processes involve toxic compounds, and it is important to know when dangerous concentrations exist. Electrochemical sensors offer several advantages for instruments that detect or measure the concentration of toxic gases. This session will describe a portable toxic gas detector using an electrochemical sensor. The system presented here includes a potentiostat circuit to drive the sensor, as well as a transimpedance amplifier to take the very small output current from the sensor and translate it to a voltage that can take advantage of the full-scale input of an ADC.
Instrumentation: Test and Measurement Methods and Solutions - VE2013Analog Devices, Inc.
Tilt Measurement: Tilt measurement is fast becoming a fundamental analysis tool in many fields including automotive, industrial, and healthcare. Navigation, vehicle dynamic control, building sway indication, and motion detection systems all rely on this simple, cheap, and precise way of angle monitoring. MEMS accelerometers are better suited to inclination measurement than other methodologies. This session will address the challenges encountered when designing a dual-axis tilt sensor using a MEMS accelerometer including measurement resolution, signal conditioning, single- vs. dual-axis, angle computation, and calibration.
Impedance Measurement: The measurement of complex impedance is widely used across industrial, commercial, automotive, healthcare, and consumer markets, and can include applications such as proximity sensing, inductive transducers, metallurgy and corrosion detection, loudspeaker impedance, biomedical, virus detection, blood coagulation factor, and network impedance analysis. This session will cover the concepts, approaches, and challenges of performing complex impedance measurements and will present a system-level solution for impedance conversion.
Weigh Scale Measurement: Most common industrial weigh scale applications use a bridge-type load-cell sensor, with a voltage output that is directly proportional to the load weight placed on it. This session examines the basic parameters of a bridge-type load-cell sensor, such as the number of varying elements, impedance, excitation, sensitivity (mV/V), errors, and drift. It will also discuss the various components of the signal conditioning chain and present solutions with high dynamic range.
Liquid Sensing: Visible light absorption spectroscopy and colorimetry are two fundamental tools used in chemical analysis. Most of these light-based systems use photodiodes as the light sensor, and require similar high input impedance signal chains. This session examines the different components of a photodiode amplifier signal chain, including a programmable gain transimpedance amplifier, a hardware lock-in amplifier, and a Σ-Δ ADC that can measure a sample and reference channel to greatly reduce any measurement error due to variations in intensity of the light source.
Gas Sensing: Many industrial processes involve toxic compounds, and it is important to know when dangerous concentrations exist. Electrochemical sensors offer several advantages for instruments that detect or measure the concentration of toxic gases. This session will describe a portable toxic gas detector using an electrochemical sensor. The system presented here includes a potentiostat circuit to drive the sensor, as well as a transimpedance amplifier to take the very small output current from the sensor and translate it to a voltage that can take advantage of the full-scale input of an ADC.
Isolation in gate drive is one critical area for designing efficient, safe and highly productive motor control systems. Learn how the latest ADI isolated gate drives can help you solve the design challenges. Analog Devices, Dara O'Sullivan PCIM 2015
Catalog Biến tần Frenic Mini New (Fuji Electric)- Beeteco.comBeeteco
Catalog Biến tần Frenic Mini New
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Catalog: Inverter Frenic-Lift Fuji Electric
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Catalog Frenic-HVAC (Fuji Electric): Biến tần Frenic-HVAC
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Fuji tu dong hoa catalog frenic-multi-dienhathe.orgDien Ha The
Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
Tài Liệu Khoa Học Kỹ Thuật: http://tailieukythuat.info
Thiết bị Điện Công Nghiệp - Điện Hạ Thế: http://dienhathe.vn
Catalog Biến tần Frenic Multi Fuji (Fuji Electric) - Beeteco.comBeeteco
Catalog Biến tần Frenic Multi Fuji - Beeteco.com
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Explore the compact inverter WJ200 series built for excellent performance and user-friendliness.
To learn more about Hitachi Inverters, visit: https://www.hitachi-iesa.com/ac-drives-inverters
A modular Test & Measurement System for production testing of products, subassemblies, and components. It is faster than any existing tester and reduces significantly your test time. It has a wide range of test capabilities, from consumer audio product testing, to basic board level tests, to process control.
Webinar: Wearables - Apresentando um diagrama de blocos e componentes chavesEmbarcados
Neste webinar, apresentaremos exemplos de aplicações de wearables além de um de diagrama de blocos completo, no qual analisaremos os componentes chave da solução. Este conceito poderá ser replicado para inúmeras aplicações e mercados. Link para o Webinar: https://www.embarcados.com.br/webinar-wearables-apresentando-um-diagrama-de-blocos-e-componentes-chaves/
When it comes to high performance signal chains, you need high performance power solutions. Noise sensitive
circuits such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), amplifiers, and phase
lock loops (PLLs)—as well as FPGAs—demand low noise power supplies that require specialized design
techniques. Engineers spend hours trying to figure out how to power these circuits without adding noise.
This presentation will focus on understanding various methods for not only approaching but meeting system
requirements. The session will introduce tested solutions and layout considerations that must be taken into
account when designing with switching regulators and low drop out (LDO) regulators.
The LV-1800 non-contact type Laser Doppler Vibrometer uses newly designed interference optical system and has achieved improvement of detection sensitivity by 20 dB compared to the conventional models. The built-in positioning camera makes it easy to check the target by laser beam irradiation.
The LV-1800 can perform amplitude velocity measurements in a wide range of fields that are difficult with a contact type vibration sensor; small actuator using piezoelectric element, cell phones and digital camera with MEMS (Micro Electro Mechanical Systems), inverter an other devices in an EV/HEV. By using the LV-1800 with FFT Analyzer, it is possible to visualize not just vibration but the state of the vibration.
https://www.n-denkei.com/singapore/inquiry/
Two leg three-phase inverters (FSTPIs) have been proposed to be used in low-power; low-cost applications because of the reduced number of semiconductor devices, and space vector pulse width modulation (SVPWM) techniques have also been introduced to control FSTPIs. However, high-performance controllers are needed to implement complicated SVPWM algorithms, which limit their low-cost applications. To simplify algorithms and reduce the cost of implementation, an equivalent scalar method for SVPWM of FSTPIs is proposed. SVPWM for FSTPIs is actually a sine PWM by modulating two sine waves of 600 phase difference with a triangle wave, but in this method third harmonics doesn’t eliminated. So as to eliminate the third harmonics we have to compose a high frequency sine wave to on existing sine waves. So such a special sine PWM can be used to control FSTPIs. The Mathematical and simulation results demonstrate the validity of the proposed method.
http://www.mathworks.com/matlabcentral/fileexchange/authors/126814
Isolation in gate drive is one critical area for designing efficient, safe and highly productive motor control systems. Learn how the latest ADI isolated gate drives can help you solve the design challenges. Analog Devices, Dara O'Sullivan PCIM 2015
Catalog Biến tần Frenic Mini New (Fuji Electric)- Beeteco.comBeeteco
Catalog Biến tần Frenic Mini New
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Catalog: Inverter Frenic-Lift Fuji Electric
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Catalog Frenic-HVAC (Fuji Electric): Biến tần Frenic-HVAC
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Fuji tu dong hoa catalog frenic-multi-dienhathe.orgDien Ha The
Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
Tài Liệu Khoa Học Kỹ Thuật: http://tailieukythuat.info
Thiết bị Điện Công Nghiệp - Điện Hạ Thế: http://dienhathe.vn
Catalog Biến tần Frenic Multi Fuji (Fuji Electric) - Beeteco.comBeeteco
Catalog Biến tần Frenic Multi Fuji - Beeteco.com
Beeteco.com là trang mua sắm trực tuyến thiết bị điện - Tự động hóa uy tín tại Việt Nam.
Chuyên cung cấp các thiết bị: Đèn báo nút nhấn, Relay, Timer, Contactor, MCCB ELCB, Biến tần, Van, Thiết bị cảm biến, phụ kiện tủ điện, .... Từ các thương hiệu hàng đầu trên thế giới.
www.beeteco.com @ Công ty TNHH TM KT ASTER
Số 7 Đại Lộ Độc Lập, KCN Sóng Thần 1, P. Dĩ An, Tx. Dĩ An, Bình Dương
www.facebook.com/beeteco
Tel: 0650 3617 012
DĐ: 0904 676 925
Explore the compact inverter WJ200 series built for excellent performance and user-friendliness.
To learn more about Hitachi Inverters, visit: https://www.hitachi-iesa.com/ac-drives-inverters
A modular Test & Measurement System for production testing of products, subassemblies, and components. It is faster than any existing tester and reduces significantly your test time. It has a wide range of test capabilities, from consumer audio product testing, to basic board level tests, to process control.
Webinar: Wearables - Apresentando um diagrama de blocos e componentes chavesEmbarcados
Neste webinar, apresentaremos exemplos de aplicações de wearables além de um de diagrama de blocos completo, no qual analisaremos os componentes chave da solução. Este conceito poderá ser replicado para inúmeras aplicações e mercados. Link para o Webinar: https://www.embarcados.com.br/webinar-wearables-apresentando-um-diagrama-de-blocos-e-componentes-chaves/
When it comes to high performance signal chains, you need high performance power solutions. Noise sensitive
circuits such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), amplifiers, and phase
lock loops (PLLs)—as well as FPGAs—demand low noise power supplies that require specialized design
techniques. Engineers spend hours trying to figure out how to power these circuits without adding noise.
This presentation will focus on understanding various methods for not only approaching but meeting system
requirements. The session will introduce tested solutions and layout considerations that must be taken into
account when designing with switching regulators and low drop out (LDO) regulators.
The LV-1800 non-contact type Laser Doppler Vibrometer uses newly designed interference optical system and has achieved improvement of detection sensitivity by 20 dB compared to the conventional models. The built-in positioning camera makes it easy to check the target by laser beam irradiation.
The LV-1800 can perform amplitude velocity measurements in a wide range of fields that are difficult with a contact type vibration sensor; small actuator using piezoelectric element, cell phones and digital camera with MEMS (Micro Electro Mechanical Systems), inverter an other devices in an EV/HEV. By using the LV-1800 with FFT Analyzer, it is possible to visualize not just vibration but the state of the vibration.
https://www.n-denkei.com/singapore/inquiry/
Two leg three-phase inverters (FSTPIs) have been proposed to be used in low-power; low-cost applications because of the reduced number of semiconductor devices, and space vector pulse width modulation (SVPWM) techniques have also been introduced to control FSTPIs. However, high-performance controllers are needed to implement complicated SVPWM algorithms, which limit their low-cost applications. To simplify algorithms and reduce the cost of implementation, an equivalent scalar method for SVPWM of FSTPIs is proposed. SVPWM for FSTPIs is actually a sine PWM by modulating two sine waves of 600 phase difference with a triangle wave, but in this method third harmonics doesn’t eliminated. So as to eliminate the third harmonics we have to compose a high frequency sine wave to on existing sine waves. So such a special sine PWM can be used to control FSTPIs. The Mathematical and simulation results demonstrate the validity of the proposed method.
http://www.mathworks.com/matlabcentral/fileexchange/authors/126814
Getting your employees engaged in your business is the best way to improve productivity and the easiest way to get them engage is to look out for some employee engagement tips and ideas.
View the full article at http://inside.6q.io/simple-and-effective-employee-engagement-ideas/
Yaskawa A1000 Drives with its latest vector control technology is capable of delivering higher order performance to meet customer expectations. A1000, not only performs but is aesthetically superior and incredibly powerful. A truly reliable product to address future requirements & current needs, only possible from L&T.
Yaskawa A1000 Drives with its latest vector control technology is capable of delivering higher order performance to meet customer expectations. A1000, not only performs but is aesthetically superior and incredibly powerful. A truly reliable product to address future requirements & current needs, only possible from L&T.
Find out more about Infineon on our Homepage: www.infineon.com
Find here all Information about Battery powered Applications, Package Information and Motor Control Secection Matrix for OptiMOS™ and Small Signal.
YORK® AMICHI™ Series Air-Cooled DC Inverter Scroll Chillers and Heat PumpsIlia Iovtchev
Mundus Services, the official partner and service provider for Johnson Controls products and services in Bulgaria, is now ready to deliver technical solutions to our clients based on the highly efficient York® AmichiTM series of air-cooled DC inverter scroll chillers and heat pumps, designed to meet tomorrow’s efficiency standards today.
Delivering performance far beyond the typical chiller and heat pump efficiency levels, the YORK® Amichi™ Series meets or exceeds stringent European regulatory requirements through an optimized combination of YORK® efficiency enhancing technologies.
Low Power Reconfigurable ASICs for Wearable Technology AppsTriad Semiconductor
Wearable Technology applications are by definition portable, battery powered and very concerned about power consumption, analog performance and cost. Triad Semiconductor makes Reconfigurable Mixed Signal ASICs ( rASIC (tm) ) that help wearable tech companies get products to market quickly and inexpensively. This presentation shows the ultra low power and precision analog performance that can be crafted in a Triad rASIC.
IDT's RF to IF downconversion dual mixers significantly benefit BaseStation vendors and operators. Featuring IDT Zero-Distortion™ technology, intermodulation Distortion is reduced up to 19 dB (98% at the device level, 83% at the system level) while power consumption is reduced up to 40% to 1150 mW. IDT's RF to IF downconverting mixers are pin compatible with competitor's devices and are offered in 3 versions to cover any of the UTRA bands from 700 MHz to 2700 MHz allowing for a compelling upgrade option. Presented by Chris Stephens, Marketing Director, Integrated Device Technology, Inc. Learn more at http://www.idt.com/go/RF.
1. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Implementing PWM Fan Speed Control toImplementing PWM Fan Speed Control to
1. Reduce Acoustics1. Reduce Acoustics
2. Decrease Energy Consumption, and2. Decrease Energy Consumption, and
3. Increase Fan Performance3. Increase Fan Performance
Abe Arredondo PE
JMC Products
Austin Texas
www.jmcproducts.com
512-834-8866
2. www.jmcproducts.com
Intel Technology
Symposium
2004
®
AgendaAgenda
Fan Laws: Useful formulas
PWM Introduction
Fan Speed Control Types
Closed Loop Interconnection Diagram
– 1. Reduced Acoustics
– 2. Decreased Energy Consumption
Soft Start Current Monitor
Motor Configurations
– 3. Increase Fan Performance
JMC Active Coolers
JMC Engineering
3. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Proven 14-year track record in thermal industry
$55 Million Revenue in 2003
Demonstrated scalability/capacity
Successful execution at the speed of large OEM clients
Exceptional response time and support team
Worldwide hub management
Dependable, just-in-time delivery capabilities
Blowers
19%
Fans
48%
Heat Sinks
33%
Computer
69%
Automotive
6%
Consumer
9%
Telecom
16%
About JMCAbout JMC
4. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Fan Laws: CFM, RPM, AcousticsFan Laws: CFM, RPM, Acoustics
RPM(2)
RPM(1)
RPM(2)
RPM(1)
CFM(2)
CFM(1)
SP(2)
SP(1)
2
Acoustics Fan Law applicable only for turbulent noiseAcoustics Fan Law applicable only for turbulent noise
Definitions:
SP Static Pressure
N Noise, RPM, CFM
RPM(2)
RPM(1)
N(2) – N(1) = 50 Log
10
120 x 120 x 38 mm FV 4000 RPM
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0 20 40 60 80 100 120 140 160 180
CFMPstat("H2O)
5. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Fan Laws: Example CFM vs. RPMFan Laws: Example CFM vs. RPM
120 x 120 x 38 mm FV 4000 RPM
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0 20 40 60 80 100 120 140 160 180
CFMPstat("H2O)
RPM(2)
RPM(1)
CFM(2)
CFM(1)
X RPM(2)
4000 RPM(1)
200 CFM(2)
180 CFM(1)
What is the New RPM if youWhat is the New RPM if you
Have 180 CFM andHave 180 CFM and
Need 200 CFMNeed 200 CFM
X = 4444 RPMX = 4444 RPM
6. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Fan Laws: Example SP vs. RPMFan Laws: Example SP vs. RPM
120 x 120 x 38 mm FV 4000 RPM
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
0 20 40 60 80 100 120 140 160 180
CFMPstat("H2O)
RPM(2)
RPM(1)
SP(2)
SP(1)
2
What is the new Static PressureWhat is the new Static Pressure
If you have a new RPM of 4444If you have a new RPM of 4444
From 4000 RPM andFrom 4000 RPM and
0.80 Inches of Water0.80 Inches of Water
Static PressureStatic Pressure
4444 RPM(2)
4000 RPM(1)
X “H2O(2)
0.80 “H2O(1)
2
X = 0.987X = 0.987 ““ H2OH2O
7. www.jmcproducts.com
Intel Technology
Symposium
2004
®
Fan Laws: Example for NoiseFan Laws: Example for Noise
RPM(2)
RPM(1)
N(2) – N(1) = 50 Log
10
What is the new Noise ifWhat is the new Noise if
From the New RPM of 4444From the New RPM of 4444
From 4000 RPM andFrom 4000 RPM and
55.0 dBa55.0 dBa
4444RPM(2)
4000RPM(1)
N(2) – 55dBa = 50 Log
10
N(2) = 57.54 dBaN(2) = 57.54 dBa
13. www.jmcproducts.com
Intel Technology
Symposium
2004
®
PWM Closed Loop DiagramPWM Closed Loop Diagram
Closed Loop System
– Computers, Telecom. …
Mother Board
Thermal Management
Controllers
Analog Devices
National, TI
Hitachi
– Outputs
PWM
– Inputs
Thermistor
Fan Tachometer
All company and product names that appear in thisAll company and product names that appear in this
presentation are the trademarks or service marks of theirpresentation are the trademarks or service marks of their
respective owners, Analog Devices (ADT7460)respective owners, Analog Devices (ADT7460)
ThermistorThermistorAnalog DevicesAnalog Devices
14. www.jmcproducts.com
Intel Technology
Symposium
2004
®
1. Reduced Acoustics1. Reduced Acoustics of PWM fansof PWM fans
Sources of Noise
1. High Speed
Turbulent Air Flow
2. Motor Switching
Noise
PWM Frequencies
– 25 KHz (High Freq)
RPM Vs. NoiseRPM Vs. Noise
2000RPM 3000RPM 4000RPM 5000RPM 6000RPM
15dBA
20dBA
25dBA
30dBA
35dBA
40dBA
45dBA
60x25mm PWM Fan60x25mm PWM Fan
60x25mm Fan60x25mm Fan
15. www.jmcproducts.com
Intel Technology
Symposium
2004
®
2. Decreased Energy: Soft Start2. Decreased Energy: Soft Start
Fast Ramp Current Monitor
– JMC Specific
– Very High Performance PWM fans
120x38mm 5000+ RPM, 92x38mm 6000+ RPM, 60x38mm 9000+ RPM
Current SpikeCurrent Spike
At 100% Start up orAt 100% Start up or
Locked RotorLocked Rotor
Current Spike At 100% Start upCurrent Spike At 100% Start up
Or Locked Rotor withOr Locked Rotor with
Soft Start / FAST RAMPSoft Start / FAST RAMP
TachTach
CurrentCurrent
CurrentCurrent
23. www.jmcproducts.com
Intel Technology
Symposium
2004
®
SINGLE SLOT SOLUTION
•Ideal Graphics Card Solution
•4200 RPM Fan
•60x10mm
•33 dBA
•16.6 CFM in Free Air
•0.22 A
•0.80°C/Watt
•Custom Retention Mechanisms
2 SLOT SOLUTION
•Ideal Graphics Card Solution
•3000 RPM Fan
•70x15mm
•28.5 dBA
•0.16 A
•23.5 CFM
•0.55°C/Watt
•Custom Retention Mechanisms
Low Profile Graphics CoolersLow Profile Graphics Coolers
24. www.jmcproducts.com
Intel Technology
Symposium
2004
®
SummarySummary
3 Benefits of PWM
– Reduced Acoustics
– Decreased Energy
– Increase Fan Performance
Electronics Enclosure require a custom thermal solution
Industry just started to use High Freq PWM for fan speed control
– Computers will continue to use PWM fans for the next few years
– Next Technology Programmable Smart Fans
One PWM fan for many part numbers
– Of similar size and CFM
– Change RPM by PWM ctrl software
JMC Active Coolers