8 pin 12045688 Cable Connector Automotive Terminal Wire Connector Plug Sockets Relay 1.5 Series

(1) Ordinary wires and ordinary wires are usually made of multiple fine copper wires. There are good anti-discountability in multi-stock forms, and it is not easy to break from repeated vibration.

Ordinary wire consists of two parts: the insulation material of copper core and outsourcing. The insulating material usually uses PVC materials, which has the following advantages: it will not melt at large current; it will not generate fire; the weight is light.

(2) The main role of shielding wire shielding wire is to prevent electromagnetic interference. If the signal cable beam is close to large current or high -voltage wiring or components, the signal wire will be disturbed by electromagnetic, which will cause the signal to be accurate. The outer layer of the shielded wire is wrapped in aluminum foil or mesh wiring beam for grounding. Electromagnetic wave interference is directly grounded eliminated

2.4.2 Factors affecting the wire resistance

The wire resistance of the wire is very important to transmission of the current, and the factors that affect the wire resistance are in the following aspects.

(1) The effect of temperature and temperature on various materials is different. For example, the resistance of copper and steel increases as the temperature increases, and for some materials, its resistance will decrease as the temperature of the material increases. When the wire resistance measurement is performed, we must take the measured wire from the circuit from the circuit. disconnect.

(2) The larger the cross -sectional area of the cross -area wire, the more electrons passed in the same time.

The thinner the wire, the more difficult the current is over, the greater the resistance of the wire. The resistance decreases with the increase in the diameter of the wire, so when the wire beam is replaced, the wiring beam of the same wire diameter must be used. If a fine wire beam is used, the resistance of the wire will increase and the resistance increases, the power consumption of the wire will increase, resulting in overheating or melting of the wire beam.

(3) The length of length increases with the length of the wire, and its resistance increases because electrons have to pass more atoms. Electronic has fewer atoms through short wires, so the resistance is small.

(4) The corrosion in the rust circuit also affects the resistance, and the resistance will increase after rust.

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