the following two steps:
1. the Y coordinate is calculated, and the driving voltage vdrive, Y-electrode grounding, and x + are applied on the Y + Electrode to obtain the contact point voltage, the ratio of the contact voltage to the vdrive voltage is equal to the ratio of the contact y coordinate to the screen height.
2. after the X coordinate is calculated, the driving voltage vdrive, X-electrode grounding
Anti-interference Design Principles
1) power cord Design
1. select an appropriate power supply
2. Try to widen the power cord
3. Ensure that the power cord, bottom line direction, and data transmission direction are consistent
4. Use anti-interference components (magnetic beads, Power Filter)
5. Add the decoupling capacitor to the power entry
2) Ground Design
1. Separated analog and digital
2. Try to use single point of Ground Connection
3. Try to widen the ground line
4. Connect the sensitive c
resistance, so it will inevitably generate external heat, therefore, the temperature increases. But why do people feel cool? Because the body surface has a large amount of sweat, when the electric fan is working, the indoor air will flow, so it can promote the rapid evaporation of sweat, combined with "evaporation needs to absorb
A lot of heat ", so people will feel cool.
Use and Maintenance of electric fans
1. Read the instruction manual carefully before use to fully understand the structur
voltage pin needs to be powered.
Mgtavccpll1
In
1.2 V, not only power supply for pll1, but also power supply for lane1 of gtpa1_dual, so as long as lane1 is used, the voltage pin needs to be powered.
Mgtavttrcal
In
Power Supply for the terminal resistance Calibration Circuit, which is a basic power supply unit. This pin must be connected not only to mgtavtttx, but also to a 50Ω precision resistance and then to mgtrref.
Mgtavttrx
In
1.2 V,
use CF-Type Soldering Iron Head with Tinning at the inclined surface. 2C/2cf, 3C/3cf Type Soldering Iron Head, suitable for welding resistance, diodes and other components, with a large tooth margin SOP and QFP can also use 4c/4cf, suitable for bulky terminals, grounding on the circuit board. Power supply and other welding scenarios that require large heat.
K type:Features: UseKnifeSome welding, vertical or pull welding can be, belong to the multi-
wiring deprecated after pads router moves the components:
Open the tools-> options-> placement tab and select during move or after move in the reroute traces box. Do not select no rerouting.
7. The problem of drawing through holes or pad in the device encapsulation:
Some plug-in element encapsulation requires pad stack. Besides the default three layers: mounted side, inner layers, and opposite side, Pad Size and aperture must be set, you also need to add layer 25.
Open the through-hole p
the distance is long, the network cannot be connected. Of course, 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 part
ideal situation cannot be fully realized. The signal-to-noise ratio (SNR) of the cable is used to measure the signal quality in the case of noise signals in the cable.
Due to the shielding in the shielded cable, the balance is poor. Therefore, good shielding integrity and good grounding are very important for the shielded cable. High-quality UTP cables can achieve good balanced Circuit Characteristics Without gro
devices is also high to increase the number of off-site conversion devices. In this case, it is necessary to calculate the charge. It is to directly use AC power supply, endure its waste, or add Substation Equipment, purchase equipment that supports DC input, and use DC power supply, this problem has been plagued by data centers for many years. The reality is that the high efficiency of DC power supply has become a consensus, but there are not many DC data centers to be built. Most data centers
after the optical fiber entry and the optical fiber connection and distribution from the single-core optical fiber to various optical fiber devices after the final connection, as well as the optical fiber distribution (line scheduling ). The optical fiber distribution product can be used to fix, split-fiber buffering, surround reservation, clamping and positioning, grounding protection, fixed joint protection, and distribution, combination, and sched
slotting, so that the resonance frequency is affected and the dual-frequency or multi-frequency operation is realized. 3) A single-layer substrate and multiple patches are used. For example, the characteristics of Multi-resonance can be formed by patches with different resonance frequencies, or multiple radiation units can be used to form a multi-frequency resonant micro-band antenna. 4) The Multilayer overlapping patch structure is used. For example, a multi-band patch structure is used to for
is to say, if the player has "stamp collecting" hobby, want to collect all the dream can treasure, really want as Gao Xiaosong like to talk about the "life not only in front of the drift, there are poetry and faraway Fields", traveled around the world's rivers. The reason why the fire is also a glance pull. This game, perhaps can let you familiar with no longer familiar with the place, there are surprises, even through the tens of thousands of times to work or school trails, may also pop out
after the communication between the parties.5. The same type of cartridge components should be placed in the X or Y direction in one Direction. The same type of polar discrete components also strive to be consistent in the X or Y direction for easy production and inspection.6. Heating elements should be generally distributed evenly, in order to facilitate the cooling of the single board and the whole machine, in addition to temperature sensing components outside the temperature-sensitive device
AI conferences.Whether the original intention of VQA development was realized:Although the VQA community has made great strides in improving the performance of the VQA model (the prediction accuracy on the VQA v2 dataset has increased from 54% to 72% in 3 years), we still have a long way to go to fully solve the VQA task. The existing VQA model still lacks many necessary abilities, such as visual Landing (visual grounding), combinatorial (composition
be connected at the joint position in the local grounding mode, ensure that the cables of the relay segment are connected to the reinforcing core, Moisture protection layer, and armor layer. (2) In accordance with the provisions of the YDJ14-91, in the optical cable joint Moisture protection layer, armor layer and the strong core should be electrical disconnection treatment, and are not grounded, the ground is insulated, this can avoid the accumulati
scenarios where phase consistency is emphasized, phase effects need to be considered.5, grounding, the eternal topic.Reasons for the self-excitation of op-amp shocks:1, the loop gain is greater than 1 2, the signal before and after the phase difference of 360 degrees, that is to be able to form positive feedback.Reference to "the principle of self-control" and "Circuit design based on OP amps and analog integrated circuits"The self-excited oscillatio
resistance, inductance, and capacitance, there is self-resonance, only in this self-resonance frequency, the equivalent resistance is the smallest, so the best filter!
The equivalent model of a capacitor is an inductance L, a resistor R and a capacitor C in series,
The inductance L is obtained from the capacitor lead, and the resistance R represents the active power loss of the capacitor. Therefore, capacitor C can be equivalent to the series LC loop for its resonance frequency. The conditi
(C) instruction.A). MOVX B).PUSH C). MOVC D). MOV - , If the MCS-51 interrupt source is programmed to be siblings, when they simultaneously request an interrupt, the CPU begins with the corresponding (B)A). INT1 B). INT0 C). T1 D). T0 the , when the MCS-51 for multi-machine communication, the serial interface should be selected as the mode of operation (D)A). Mode 0 B). Mode 1 C). Mode 2 D). Mode 2 or Mode 31 , When RS1 rs0=10h is in the PSW, the address of R2 is 12H.2 , MCU after power-on rese
ADSL disconnection involves many problems, including line faults (line interference), ADSL modem faults (fever, quality, compatibility), Nic faults (slow speed, drive
Program Old) and so on. The operator and the user shall perform the following routine checks: whether the ADSL telephone line connection is secure and reliable: whether to stay away from the power cord and high-power electronic equipment; Whether to install telephone extensions, fax machines, toll collectors and other equipment be
attention to the following points.1. 485 + and 485-data lines must be twisted to each other.2. multi-strand shielded twisted pair wires must be deployed for cabling. Multiple strands are used for backup, and shielding is used to facilitate debugging in special cases. The reason is that the 485 Communication adopts the principle of differential mode communication, and the dual twisting has better anti-interference performance. It is wrong not to use twisted pair wires.3. The 485 bus must use a h
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