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What to pay attention to when using and installing inductance coils

Release time:

2023-07-25 17:56

The Body relative direction of coil equipment and other components must meet the planning requirements, or the normal operation of the whole machine will be affected. For example, in a simple semiconductor radio, the direction of the high-frequency resistor coil and magnetic antenna should be arranged appropriately. The antenna coil and oscillation coil should be perpendicular to each other to avoid the influence of mutual coupling.
(2) The coil should undergo a visual inspection in front of the equipment.
Before use, it is necessary to check whether the coil structure is firm, whether the number of wire turns is loose, whether the wire contacts are loose, whether the iron core rotates actively, and whether there is slipping. After checking all these aspects, proceed with the equipment
(3) If the coil needs to be fine tuned during application, the method of fine tuning should be considered.
Some coils require fine-tuning during use, and it is not convenient to rely on changing the number of coils. Therefore, the selection should consider the method of fine-tuning. For example, a single-layer coil can remove the number of trapped coils through the end of the coil, that is, wrap the coil 3-4 times in advance, and adjust the inductance by moving its orientation during fine-tuning. Practice has proven that this scheduling method can achieve fine tuning of inductance between ± 2% - ± 3%. The coil used in short wave and ultra short wave circuits often leaves half a turn as a fine adjustment. Remove or rotate this half turn to change the inductance and complete the fine adjustment. The fine-tuning of multi-layer segmented coils can be achieved by moving the relative spacing of the segments. The number of turns in the active segment should account for 20% -30% of the total number of turns. Practice has proven that such fine-tuning planning can reach 10% -15%. A coil with a magnetic core can adjust the inductance of the coil by adjusting the orientation of the magnetic core in the coil tube.
The Body relative direction of coil equipment and other components must meet the planning requirements, or the normal operation of the whole machine will be affected. For example, in a simple semiconductor radio, the direction of the high-frequency resistor coil and magnetic antenna should be arranged appropriately. The antenna coil and oscillation coil should be perpendicular to each other to avoid the influence of mutual coupling.
(2) The coil should undergo a visual inspection in front of the equipment.
Before use, it is necessary to check whether the coil structure is firm, whether the number of wire turns is loose, whether the wire contacts are loose, whether the iron core rotates actively, and whether there is slipping. After checking all these aspects, proceed with the equipment
(3) If the coil needs to be fine tuned during application, the method of fine tuning should be considered.
Some coils require fine-tuning during use, and it is not convenient to rely on changing the number of coils. Therefore, the selection should consider the method of fine-tuning. For example, a single-layer coil can remove the number of trapped coils through the end of the coil, that is, wrap the coil 3-4 times in advance, and adjust the inductance by moving its orientation during fine-tuning. Practice has proven that this scheduling method can achieve fine tuning of inductance between ± 2% - ± 3%. The coil used in short wave and ultra short wave circuits often leaves half a turn as a fine adjustment. Remove or rotate this half turn to change the inductance and complete the fine adjustment. The fine-tuning of multi-layer segmented coils can be achieved by moving the relative spacing of the segments. The number of turns in the active segment should account for 20% -30% of the total number of turns. Practice has proven that such fine-tuning planning can reach 10% -15%. A coil with a magnetic core can adjust the inductance of the coil by adjusting the orientation of the magnetic core in the coil tube.