grounding wristband

upper film and lower film is turned on. After the CPU check, perform the following operations. 2. the microprocessor first supplies the X axis + 5 V, and grounding the Y axis. When the touch is reached, the voltage value on the ADC digitizes the voltage value and calculates the X axis coordinate position. 3. The CPU first supplies

connected to the main board, the core line is connected to the RF signal of the Main Board, and the open circuit end is perpendicular to the main board, the main board is equivalent to an arm of the dipolar antenna, that is to say, the motherboard can be regarded as a part of the antenna. In a limited viewing space, it is impossible to seek an infinite space. Under certain boundary conditions, the motherboard can be regarded as a ground, in this case, the model is monopole antenna (called Model

What are the differences between VCC, VDD, and VSS in electronic circuits? I. Explanation VCC: c = circuit indicates the circuit, that is, the voltage of the access circuit; VDD: D = device indicates the working voltage inside the device; VSS: S = series indicates the public connection, which usually refers to the public grounding terminal voltage of the circuit. Ii. Description 1. for digital circuits, VCC is the power supply voltage of the circ

, do not use inferior crystal headers and cables. Strictly enforce the grounding requirements: because some weak signals are transmitted in the LAN, if the operations are slightly improper or fail to follow the specific operation requirements of the network equipment, interference information may occur in the network, and serious interference may cause the entire network to fail. In particular, some network transfer equipment, due to remote lines, hav

Meanings of VCC, VDD, Vee, VSS, and VPP Version 1: To put it simply, we can understand it as follows: I. Explanation VCC: c = circuit indicates the circuit, that is, the voltage of the access circuit;VDD: D = device indicates the device's internal operating voltage;VSS: S = series indicates the public connection, which usually refers to the public grounding terminal voltage of the circuit;Vee: negative voltage power supply;VPP: programming/erasure vol

cases. The 485 Communication adopts the principle of differential mode communication and the best anti-interference performance of the twisted pair cables. it is an extreme mistake not to use twisted pair wires.The 485 bus must be a hand-held bus structure, and the star connection and the split connection should be resolutely put an end to it.The AC power supply and chassis of the equipment must be grounded and grounded properly.There are many triangular sockets on the surface, but there is no

audio playback. WM8958 also comes with an audio enhancement DSP that can run a multi-band compressors (MBC), which ensures that sound effects are significantly louder and more transparent from small speakers, without overload or damage. By working with a parametric balancer and dynamic range Controller on a single board, MBC can provide the ability to expand and optimize speaker output, bringing exceptional audio playback for various multimedia applications and cell phone ringtones. In additi

This project has been in operation for four months. Two weeks to find the microcontroller internal ad touch screen information, two weeks to select both with USB and with AD appropriate microcontroller. Two weeks of testing and demonstration, draw a schematic diagram. Then make the PCB and debug the engineering code. The successful experiment function is only the first step. debugging the Flying Point and filtering the AD data are the difficulties of subsequent work. 1. Implementation principle:

example, 5mil (0.127 ). (3) The high-speed signal transmission layer in the circuit should be the signal intermediate layer and be clamped between two inner electrical layers. In this way, the copper film of the two inner electrical layers can provide Electromagnetic Shielding for high-speed signal transmission and effectively restrict the radiation of High-speed signals between the two inner electrical layers without external interference. (4) avoid two signal layers directly adjacent. Crossta

What are the differences between VCC, VDD, and VSS in electronic circuits? I. Explanation VCC: c = circuit indicates the circuit, that is, the voltage of the access circuit; VDD: D = device indicates the device's internal operating voltage; VSS: S = series indicates the public connection, which usually refers to the public grounding terminal voltage of the circuit. Ii. Description 1. for digital circuits, VCC is the power supply voltage of the

know the frequency solution method, it is really a "dead machine.Below will be TK-208 walkie talkie solution frequency, set frequency, storage and lock frequency method introduced to colleagues.I. Solution frequency (two methods are available for case-opening or case-less) 1) method of case-opening solution frequency: remove four screws on the back of the machine and extract the battery, pinch the sides of the chassis on the left side of the Panel, and then gently open the rear half of the chas