Electret Condenser Microphone, is a kind of acoustic power conversion device, which belongs to the capacitor microphone.The electret capacitors in the electret capacitor are used as either the diaphragm or the back pole, which can be used to store charge, so no additional polarization power is required.At the same time, the output sensitivity is greatly improved due to the built-in field effect tube.
Electret Condenser Microphone is Small volume, high temperature resistance, strong stability, low failure rate, to adapt to the environment, high sensitivity, small current, low noise, high quality
Electret Condenser Microphone is be applied to Mobile phone, bluetooth headset, MP3, MP4, PAD, digital camera, voice recorder, wearing headphones, portable megaphone, directional control pickup, community intercom, outdoor interphone, meeting mike
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Acer's second-generation Ultrabook-S5, reportedly using the latest 4mm micro fans for cooling, and 2nd generation Ultrabook makers including HP, Lenovo, Dell, and LG Electronics all expressed interest in adopting the 2nd generation of Ultrabooks. The 2nd generation Ultrabook will begin shipping in the second half of this year.
Sources pointed out that 4 mm is the thinnest micro-fan that can be produced by current technology. The original intention was to enter the mobile phone market. However, since the fan noise is not suitable for mobile phones, micro-fans are now entering the Ultrabook market.
Currently, most existing Ultrabooks use a 5.5 mm or 7 mm fan. The Acer S5 is the only Ultrabook that already uses a 4 mm micro fan. The standard fan is usually priced between $1.15-1.20, while the miniature fan price can reach $1.60-1.70. 