• USB: type-C and micro 5V input charging and discharging, and the nixie tube monitors and displays the power in real time; Set three touch keys, power key (middle), increment key + (left), decrement key - (right); Add and subtract key, press once to add or subtract 1, and long press to quickly increase or decrease;

    2022-04-16

  • PCBA welding processing usually has many requirements for PCB board, which must meet the welding requirements. So why does the welding process require so many requirements for circuit boards? Facts have proved that there will be many special processes in the process of PCBA welding, and the application of special processes will bring requirements to PCB.

    2022-04-14

  • QA activities run through the whole process of project operation; QC activities are generally set at a specific stage of project operation, and may be completed by different roles at different control points. For competent QA, tracking and reporting findings during project operation is only the basic part of their job responsibilities. More valuable work includes providing process support to the project team, such as providing cases and reference data of previous similar projects for the project manager, introducing and explaining applicable process definition documents for project team members, etc. QC's activities are mainly to find and report product defects. Me: Equipment Engineer; Organization Engineer Ie: Process Engineer QE: Quality Engineer Te: Test Engineer RD Engineer: Rd refers to the research and development engineer, generally in electronics, software industry, other industries, such as plastic products unit and electrical factory

    2022-04-13

  • PE: Product Engineer generally means engineering manufacturing and production technology. Me: Equipment Engineer; Organization Engineer Ie: Process Engineer QE: Quality Engineer Te: Test Engineer RD Engineer: Rd refers to the research and development engineer, generally in electronics, software industry, other industries, such as plastic products unit and electrical factory

    2022-04-12

  • CBA test is the most critical quality control link in the whole PCBA processing process. It is necessary to strictly follow the PCBA test standard and test the test points of the circuit board according to the customer's test plan. PCBA test also includes five main forms: ICT test, FCT test, aging test, fatigue test and test in harsh environment.

    2022-04-09

  • Crosstalk refers to the mutual interference caused by long parallel wiring between different networks on PCB, which is mainly due to the distributed capacitance and distributed inductance between parallel lines. The main measures to overcome crosstalk are: Increase the spacing of parallel wiring and follow the 3W rule. Insert a grounded isolation line between parallel lines. Reduce the distance between the wiring layer and the ground plane.

    2022-04-09