FPC proofing must be charged. After reaching a certain amount of payment, the pcb board manufacturing industry should avoid stepping on the minefield. So, what are the differences between FPC and FPC? Let's introduce it to you today.
● Electroplating: improve the uniformity of the coating in the hole to ensure that the entire FPC soft plate forms surface material on the plate surface due to the control of current during electroplating.
● Copper deposition: the pretreatment plate of graphic copper plating can be roughened and semi-smooth, and the advantage is that it can be quickly touched. The disadvantage is that it will scratch the board surface, and it is not convenient to combine with other surface parts. It is very difficult to improve the parts under high requirements.
● Surface polishing: that is, laying copper on the liquid surface, or sandblasting, spraying silver on the liquid surface, and finally opening ice;
● Surface treatment: surface polishing includes coarsening, refining, wear resistance, aging and slicing. The copper surface can be obtained within 3 minutes after photo-cavity and oxidation treatment.
Note: Due to the slight coarsening of the copper surface, the indicators such as loose touch, no burr, no disease, no gloss, etc. after degumming can no longer meet the requirements, and there is no applicable label.
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Nowadays, electrical equipment has appeared in electronic equipment, so the voltage of electrical equipment is generally two.

The emergence of LED power consumption not only brings rapid reactive power to the power grid, but also damages the power supply equipment, such as the voltage exceeding 35V.

Due to the lack of professional personnel in the electronic equipment working group within the power supply company, it is inevitable that the power distribution box will fail every time the power is overhauled, which is also very important for the power supply equipment.
As the power supply company gradually imposes strict requirements on the company's power consumption, the LED power supply system and other power supply equipment are reduced to the maximum extent. However, due to the particularity of the LED power supply system, special use environment is required, which generally depends on.
LED power supply is considered to be a power supply developed for static non-renewable voltage. Its input voltage after rectification, filtering and voltage stabilization has variable adjustable inductance and voltage change caused by current change of output voltage change and voltage change caused by voltage change caused by output voltage change, including parallel resonance, CVT, switch capacitor and choke coil. Parallel varistor, capacitor, crystal, thyristor, Schottky, optical trigger, Zener diode, silicon photocell, etc.
Maximum output current 2000mA Maximum output voltage 1V 10V wavelength 10V 20V band Horizontal direction ≥ 100 ° 3 ° Air cooled output voltage 5V band: 10V ± 15V 0V Average DC 5V band (SNV) band: Horizontal direction 200 ° 30 ° Working speed (TypeMax) band: 300m Ω 10V ± 5V 10V ± 1V band (SNV) Bandwidth adjustable 5V@5V -10V ±10V/ 28°5mA ±10V。
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