As pressure builds in an acoustic cavity or chamber, it creates a bias on compliant surfaces of the transducer, such as speaker and/or receiver diaphragms. The acoustic openings in smart phones – microphones, receiver and speaker – can be a source of problems if not adequately protected. Features such as increased data usage, touchscreens, high-resolution cameras, multiple acoustic transducers and electromechanical components such as enclosure gaskets and flex connectors have considerably increased the challenge to long-term smart phone reliability. For example, we tested two materials with similar airflow and acoustic resistance properties – one woven and one non-woven (Figure 5). The non-woven materialÂ’s capture efficiency rate improved as particle size increased, with almost twice the efficiency at 8.5_m, when compared to the woven materialÂ’s efficiency. Whereas non-woven materials capture fine particles, ePTFE membranes have microscopic pores that block virtually all particles in various shapes and sizes. At present, non-woven materials may provide sufficient protection for most situations. Woven material (top) captures particles equal to or greater than its specified pore size, whereas nonwoven materials (bottom) capture a greater range of particle sizes and shapes. Electronic enclosures that are installed outdoors are vulnerable to a wide range of environmental hazards that can affect the performance, reliability and life expectancy of the sensitive electronics within.
Gore, the global leader in venting technology and expertise, offers a full range of venting solutions engineered to improve the performance reliability and longevity of outdoor electronics. Victor Lusvardi is Global Business Leader and Chuck Seipel is Product Specialist at W. L. Gore & AssociatesÂ’ Portable Electronic Vents Business Unit, Elkton, Md. Vents made from this material protect sensitive electronics from contaminants while also allowing the enclosure to breathe in order to avoid damage or device failure caused by pressure differences between the internal device and ambient conditions. Although waterproof transducers can prevent water from entering sensitive sections of devices, they can still allow water and particulates onto and around the transducer surface. They provide protection without compromising sound quality and release pressure from devices to prevent the transducer bias discussed above. Incorporating a vent in the housing allows air to flow freely, equalizing pressure within the housing and eliminating transducer bias. If youÂ’re looking for a simple and effective way to clean air vent covers in your house, scrubbing with a soft brush can be a great option. Adhesive Vent Membranes and Adhesive Vent Stickers are made use of to provide an easy, peel-and-stick Alternative for venting and pressure equalization in many units.
MagicMOUNT ELITE Double Pivot-Magnetic also come with the new ELITE MagicPLATE_, with china Automotive Vents factory backing, which can convert the magnetic base into an adhesive dash for tabletop or wall mounting. Unless the stereo is designed for precisely the model of car that you own, you’ll likely need a dash kit to fit it properly in the bay. Pressure differentialsoccur primarily because of one of two environmental changes: rapid temperature changes such as when the device is taken from a warm car into cold weather outside, or air pressure changes such as during takeoff or landing of an aircraft. Wow Factor: This car was designed for the organization-obsessed. However, as smart phones continue to evolve in complexity and value, so will the level of protection required to ensure reliable performance. However, in-house testing has shown that understanding the particle shape and surface area has a more direct impact on the level of protection a material can provide than considering size alone. This mesh is generally selected based on the minimum particle size to be prevented from entering. Some of the gas and particle byproducts of combustion include:- Carbon monoxide (CO). GORE Protective Vents effectively dissipate hazardous gas molecules.
GOREŽ Protective Vents can help your enclosure meet IP and NEMA protection standards. The steam and pressure will help loosen and lift the dirt and debris. Over time, this can cause seals to fail, allowing moisture and other contaminants such as dust, dirt and other particulates to be drawn inside, and compromising the functionality of components like telecom air filters, for example. See Figure 1. Smart phones need to be protected from challenging conditions like being exposed to rain or spilled coffee, being dropped in the sand at the beach, and the dust and dirt present all around us. They are also know to produce the same amout of airflow as much louder fans but do it whisper quiet and we are starting to see them in a lot more PSUÂ’s. In terms of overall body shape, the Cygnet’s Toyota iQ roots are clearly evident. And smart phones are evolving so rapidly – the vast majority of components in current-generation smart phones are recent additions – that OEMs have to be careful not to design to yesterdayÂ’s standards, which do not adequately safeguard reliable performance. For custom venting solutions, Gore can partner with you on everything from initial design to production-line integration.