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Medical equipment   and devices must be designed with rigorous standards to function in environments where patient safety and product reliability are critical. Today, there is great demand for innovative, feature-rich, and affordable electronic equipment to be used in diagnostic labs, hospitals, and clinics, as well as for consumer self-care. Engineers are constantly challenged to deploy differentiating leading-edge electronics that demonstrably improve patient care in a cost-effective manner for in-home patient care and portable monitoring and therapeutic devices. Mechanical membrane switches and increasingly feature-rich capacitive user interfaces are used in a wide range of medical equipment and devices — defibrillators, EKG leads, electronic sensors, glucose meters, infusion pumps, patient monitors, and portable oxygen units, as well as disposable dental, medical, and surgical equipment. Therefore, it is important to closely compare and understand the respective technologies be...

  There are many manufacturers and suppliers of LEDs, with Asian producers supplying low-cost LEDs to the world. Most lighting designers believe that all   LED   products are of the same quality.   Surprisingly, only a few of these manufacturers are able to make high-quality LEDs. For simple indication applications, low-quality LEDs are sufficient. But high-quality LEDs must be used in many areas that require consistency, reliability, solid-state indication or lighting, especially in harsh environments such as highways, military/aviation, and industrial applications.   In environments such as New York subway stations, where safety requirements are very demanding, LEDs must meet the fundamental factors of high quality.   What are the factors that distinguish the quality of LEDs? How can we tell the difference between the two LEDs? In fact, there are many factors that need to be considered from the start of the chip until the assembly is complete. The chemica...

Unlike other products,   metal domes  have a standard size and shape. Metal domes vary in style and size according to product needs. Commonly used metal domes are mainly divided into five types: oval metal domes, triangular metal domes, cross-shaped metal domes, round metal domes, and quadrangular metal domes.   First of all, we will introduce the oval metal domes, because it is shaped like a waist, it is also called the waist metal domes.   Oval metal domes  are as follows: From the three different metal domes above, we can see that they look the same on the outside, all of which are oval in shape, with five contacts on the back and no feet. It is generally used on a single button product or on a product where each button is separated. Since the pressure resistance and strength required for each product button are different, there are several strengths of the oval metal domes.   Triangular metal domes  are similar in shape to triangles,...