Acoustic noise reduction device for electronic equipment, including personal computers

2010 ◽  
Vol 127 (2) ◽  
pp. 1174
Author(s):  
Maher S. Kawar
Keyword(s):  
Noise Reduction ◽  
Acoustic Noise ◽  
Electronic Equipment ◽  
Personal Computers

An Approach for Practical Use of Common-Mode Noise Reduction Technique for In-Vehicle Electronic Equipment

2010 ◽  
Vol E93-B (7) ◽  
pp. 1788-1796 ◽  
Author(s):  
Takanori UNO ◽  
Kouji ICHIKAWA ◽  
Yuichi MABUCHI ◽  
Atsushi NAKAMURA ◽  
Yuji OKAZAKI ◽  
...  
Keyword(s):  
Noise Reduction ◽  
Reduction Technique ◽  
Electronic Equipment ◽  
Common Mode ◽  
Noise Reduction Technique

Life before and after implementation of an acoustic noise reduction enclosure

2005 ◽  
Vol 109 (1092) ◽  
pp. 65-74
Author(s):  
B. Timmins
Keyword(s):  
Wind Tunnel ◽  
Noise Reduction ◽  
Acoustic Noise ◽  
Financial Health ◽  
Two Phase ◽  
North West ◽  
The North ◽  
Close Proximity ◽  
Before And After ◽  
Increase Productivity

Abstract This paper looks back on the designs and ambitions of ARA in resolving a long term acoustic noise problem which threatened ARA with closure. This paper today briefly looks back to the original issues but deals more fully with the later phases of a two phase project implementation and construction. ARA is now a truly ‘silent site’, where closure was once threatened, ARA has achieved the implementation of a bespoke noise reduction enclosure where 24-hour running has proved to be a reality. This paper looks at the design and construction phases, the ‘before and after’ noise footprints and at some of the financial benefits ARA has achieved. The ARA transonic wind tunnel is sited on an industrial estate on the north west perimeter of Bedford. When it was first built it was on an original farm site with no appreciable residential houses in close proximity. Since the early 1950s there has been considerable residential development around the ARA site resulting in the local householders complaining about the wind tunnel acoustic noise. In early 1999 ARA was obliged to consider several options for noise reduction measures to reduce the noise to within UK government statutory requirements. This paper deals briefly with the original noise nuisance characteristics and footprint, the noise reduction design and method that ARA selected and shows the construction phases, the further noise treatment ARA had to do on other major ancillary equipment to make ARA a truly quiet industrial site. The paper shows how ARA has utilised the resulting benefits of these investments to increase productivity and reduce costs, and the influence it has had on ARA’s financial health.

A Novel InSb Photodiode Infrared Sensor Operating at Room Temperature

2005 ◽  
Vol 891 ◽  
Author(s):  
Koichiro Ueno ◽  
Edson Gomes Camargo ◽  
Yoshifumi Kawakami ◽  
Yoshitaka Moriyasu ◽  
Kazuhiro Nagase ◽  
...  
Keyword(s):  
Room Temperature ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Consumer Electronics ◽  
Electronic Equipment ◽  
Personal Computers ◽  
Infrared Sensor ◽  
Output Noise ◽  
In Series ◽  
Photovoltaic Mode

ABSTRACTA microchip-sized InSb photodiode based infrared sensor (InSb PDS) that operates at room temperature was developed. The InSb PDS consists of 700 photodiodes connected in series and consumes no power, because it works in photovoltaic mode to output an open-circuit voltage. The InSb PDS has a typical responsivity of 1,900 V/W and an output noise of 0.15 μV/Hz1/2. A detectivity of 2.8×108 cmHz1/2/W was obtained at 300 K. The InSb PDS has performance high enough for applications such as mobile electronic equipment, personal computers, and consumer electronics

Acoustic noise reduction system for a disk drive

1999 ◽  
Vol 105 (3) ◽  
pp. 1446
Author(s):  
Nils Eric Larson ◽  
Ajit Fathailal Sancheti
Keyword(s):  
Noise Reduction ◽  
Acoustic Noise ◽  
Disk Drive ◽  
Reduction System
Sign in / Sign up

Export Citation Format

Share Document