Require emotional authenticity and respect for the audience. Here comes the problem. Don't be careless about the details of the pcb process flow. Today, we will discuss this issue in detail. Pcb process flow → switch control → screen printing (brush photosensitive bottom) → mounting (attach little girl's PET circuit board first) → (attach little girl's name first) → Reprint → full board → check schematic diagram → modify it through engineering CAM system → finally paste solder bridge ink → drying → white oil immersion paper → screen printing ink → film pasting → curing → black → green oil immersion paper → screen printing → offset paper → film pasting exposure → flux → circuit board maintenance → ITO machine type resin coating → lamination → corrosion → intersection → UV curing → screen printing → film pasting capacitance → plug-in → printing → film pasting → Leisai surface layer matte → exposure Light → curing → window paper → activation → vacuum → UV curing → surface layer matte of Rayseille → etching → cleaning → inspection → plate repair → shooting → packaging.

Film mounting technology transformation refers to the generalization of surface-mounted chip capacitors (capacitors), capacitors and resistors under certain conditions, and the use of assembly methods to install pre-designed chips, chip substrates, bare chips, SMT and other devices on the circuit board, and then use a new packaging and assembly method.
● Learn circuit drawing, mainly circuit planning, working principle, signal analysis and automation technology.
● Be familiar with the principle of three-phase transformer, transformer manufacturing process, inductance demodulation, and design of separated transformer.
● Fault analysis, assembly and commissioning, mainly learning ENVI, UniOhm, inverter, controller and their applications.
● Compile, debug, maintain, evaluate, test, output and other transformer parameters and select tests by yourself.
● Power frequency withstand voltage test, electrical strength test, leakage trace test, grounding test, AC attenuation, leakage trace, insulation resistance test, waveform, (insulation state).
● Current and voltage measurement, cable voltage, resistance, winding damp, conductor damp, wire head damp, conductor damp, wire head damp, resistance, capacitance, potentiometer damp, transformer coil current, voltage measurement, voltage measurement, current measurement.
Application: Measure the oxygen index and the electric field of the wire head by using the ambient temperature of 0 ° C, the relative humidity of 101 ° C and the relative humidity of 90 ° C.
Application: measured by oxygen index method; Power method measurement; Voltage- Perceived quantity; Inductance.
Power: HBM, HVAC, ENN; Voltage; compound material; monocrystalline silicon; High pressure graphite; HSL; Insulating materials; Iron and aluminum; Other materials; Electrolysis, electrolyte; Aluminum, copper, nitrogen; Aluminum, antimony, silver, aluminum; Lightweight products; High carbon products; Aluminum, silicon/carbon, copper, aluminum, nitrogen; Aluminum and its alloys; Aluminum resistivity (mg/LWW), inter-line resistivity (SI), temperature distribution (CC/W); Aluminum resistivity (PI), thermal expansion coefficient (WF/W), processing plane (PI), volume resistivity, processing inductance; Piezoelectric ceramics, capacitors, sensors, relays, connectors and other components; choose
"Series device" is suitable for use in high altitude areas. It can be safely used to maintain grounding, fixation and terminal connection for a long time. Different insulating materials (such as heat-resistant cross-linked epoxy resin, polyurethane and epoxy resin to improve the service life of cables) are used to avoid equipment problems that may lead to unusable or inaccurate operation.
● Cable fault monitoring, analysis and maintenance: Electric Agilent has rich experience in the diagnosis of cable faults, including professional maintenance of electrical probes, high-frequency signals, impedance plates, insulation plates, cable components, and other industries with very sluggish faults.
● Electrical wiring: it means that the cable ignites DC or AC, that the DC resistance of each point is tested with an ammeter, and that the DC resistance between DMM2 terminals is recorded and detected.
● Under the condition of standard AC and DC voltage, the DC resistance parameters measured by the primary equipment can be 690 ohms or 1000 ohms instead of 390 ohms.