What are the wiring rules of electronic circuits in instrument manufacturing and their impact on electromagnetic compatibilityг┐

Wiring Rules of Electronic Circuits and Their Impact on Electromagnetic Compatibility

The wiring of electronic circuits is a crucial link in circuit design, which not only affects the performance and stability of the circuit but also directly affects electromagnetic compatibility (EMC). Electromagnetic compatibility refers to the ability of equipment to operate normally in an electromagnetic environment without causing electromagnetic interference to other equipment. Good wiring rules can effectively improve the EMC of the circuit, reduce the risk of electromagnetic interference, and ensure the stable operation of electronic equipment.

The wiring rules of electronic circuits mainly include the following points:

　　Minimizing wiring length: Try to minimize the length of signal lines and avoid long signal lines. Long signal lines will increase signal attenuation, cause signal distortion, and thus affect the performance of the circuit. Inaddition, long signal lines may also generate parasitic capacitance and inductance, affecting the stability and EMC of the circuit.

Reasonable layout: When wiring, it should follow the principle of 'high impedance close to power, low impedance away from power', that is, try to bring high-impedance signals close to the power supply, and low-impedance signals away from the power supply. At the same time, try to avoid the parallel or crossover of signal lines and power lines to reduce electromagnetic interference.

Using appropriate wiring materials and methods: Choose appropriate wiring materials such as copper wire, copper foil, etc., to reduce signal attenuation. At the same time, adopt appropriate wiring methods such as twisted pair, shielded wiring, etc., to reduce electromagnetic interference.

Reasonably setting wiring width and spacing: The choice of wiring width and spacing should be determined according to the type of signal and the transmission rate. Generally, high-frequency signals should use narrower wiring, while low-frequency signals can use wider wiring. At the same time, the spacing between wiring should also be determined according to the specific situation to reduce electromagnetic interference.

Avoiding shared wiring: When wiring, it should be avoided to use shared wiring as much as possible to reduce electromagnetic interference. For example, it is best to avoid sharing wiring between signal lines and power lines to reduce electromagnetic interference.

The impact of wiring rules of electronic circuits on EMC is mainly reflected in the following aspects:

Reducing electromagnetic interference: Reasonable wiring rules can effectively reduce electromagnetic interference, avoid shared wiring between signal lines and power lines, ground lines, etc., reduce the length of signal lines, and set the wiring width and spacing reasonably, thereby reducing electromagnetic interference.

　　Improving circuit performance: Reasonablewiring rules can improve the performance of the circuit, avoid signal attenuation, and reduce the parasitic capacitance and inductance of signal lines, enhance the quality of the signal, and thus improve the performance of the circuit.

　　Enhancing equipment stability: Reasonable wiring rules can enhance the stability of the equipment, avoid signal attenuation, and reduce the parasitic capacitance and inductance of signal lines, thereby improving the stability of the equipment.

In summary, the wiring rules of electronic circuits are crucial for electromagnetic compatibility (EMC), and reasonable wiring rules can effectively improve the EMC of the circuit, reduce the risk of electromagnetic interference, and ensure the stable operation of electronic equipment.