+86 0769-8618 6936
Tianliao Industrial Area,Shipai Town, Dongguan City,Guangdong province,China, 523340
+86 137 2641 6889
+86 0769-8618 6936
+86 0769-86186926
longliqun1211
137 2641 6889
Several tips on power supply metal cover
View: Time: 2017-11-29 23:02:24
Metal and plastic all be used for power supply case,plastic is easy fabrication, but with low end, metal is high end but difficult fabrication.
If the metal cover is not handled properly, it will enhance the internal electromagnetic interference.During the power supply working time, power tube switch instantly produces a strong high harmonics (switching noise), and produce switch noise radiation.
The basic solve methods are as below:
1.The metal cover must touch the ground.
2.The internal cable should use double stranded wires as far as possible..The anti-interference ability of the double stranded wires is even better than the shielded wire.
3.The output negative electrode of the power supply should not connect the metal cover, but through 103 Y capacitors (available 1KV 103 high-voltage porcelain capacitors), connect the metal cover near the output terminals.
Tina Lin