capacitive transducer

adsorption of water molecules on the surface or inside the object directly affects the electrical and physical properties of the object. With this feature, a variety of adsorption sensors are made. Several common humidity detection sensors and their characteristics are shown in table 1. Although it has been improved and improved for a long time, it is still difficult to fully meet the above requirements. With the development of integrated electronic technology, the combination of integrated cir

protection shell can not be lessThe first thing you can do to protect your screen is to have a proper protective shell for your iphone, preferably a flip-screen overlay. The benefits of using clamshell shells are great: First, you can prevent the hard objects from scratching the screen. Second, when the iphone falls accidentally, it can prevent the screen from cracking. The last point is to avoid static contact. Because the iphone screen is a

Simple method of 220V alternating current to low voltage DC resistance buck The conventional method of converting 220V alternating current to low-voltage DC is to use the transformer to buck and then rectify the filter, but when the product is limited by the factors such as volume and cost, the simplest and most practical method is to use capacitive buck mode.First, the circuit principleThe basic circuit of the capacitor buck simple power supply is sh

The early phone screens were used only to "see", and the invention of touch technology allowed people to interact with the screen on a 2D plane, while Apple's iphone 6s introduced a combination of the In-cell panel, the strain sensor, and the tactile engine (taptic Engine) opens the new era of smart touch, what exactly is 3D touch technology? What is the In-cell panel?2D Touch: Let the panel liveLCD panel is only used to display the image, the user can only receive the image information one-way,

same CPU!And this algorithm only needs to register the process only 6-8 times, more than the market needs to register 12-15 times greatly shortened, but the security is indeed the market algorithm more than 10 times times!2. Update the screen fingerprint some content and testAt present, there are three kinds of fingerprint module: optical type, capacitive type, ultrasonic type. Each has the merits and demerits, is not our article to discuss, we only

Article Description: All kinds of touch screen big competition Capacitive, resistive, infra-red .... Whatever the style, although perhaps the fingers of your readers have been accustomed to rowing on the screen, but the earliest know that there is such a screen can be manipulated by touch, will it be as surprised as the author? Now with the help of the following figure, let's take a look at all kinds of touch screen features, but also what l

integrity issues• Signal integrity (Signal Integrety,si) The most primitive meaning: whether the signal can maintain the waveform it should have. • Signal integrity refers to all problems caused by interconnects in circuit design, and it mainly studies how the electrical characteristic parameters of interconnects interact with the voltage and current waveforms of digital signals, and how the performance of the products is affected. • Main performance: Impact on timing, signal ringing, signal re

ITOP-4412 Arm Embedded Development Board----main featuresiTOP-4412 development platform is an embedded Development Board platform designed by Beijing Xun for electronic research and development, the core board is equipped with 64-bit dual-channel 2GB DDR3,16GBEMMC storage, Samsung s5m8767 Power management chip, low power consumption. Backplane onboard high precision GPS module, WiFi Bluetooth module, can,rs485 and other industrial interfaces. Information, source all open source.ITOP-4412 Arm Emb