Current detecting module and current tester
a current detection module and current tester technology, applied in the direction of instruments, measurement devices, measurement using digital techniques, etc., can solve the problems of inability to use devices, inability to provide a limited degree of accuracy, etc., and achieve the effect of convenient user experien
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first embodiment
[0023]In the present invention, the first sensor element 13 and the second sensor element 14 are Hall Effect sensors with different specifications, and the first sensor element 13 and the second sensor element 14 are designed to sense different ranges of magnetic fields. For example, the first sensor element 13 is able to sense a magnetic field between 0 Gauss(G) and 100G and outputs a first sensing signal between 0 volt(V) and 40 mV in proportion with the value of the magnetic field. The second sensor element 14 is able to sense a magnetic field between 0 G and 1000G and outputs a second sensing signal between 0V and 40 mV in proportion with the value of the magnetic field.
[0024]Furthermore, according to the proportion between the sensing signals and the magnetic field sensed and the condition of the ferrite core 12, the first sensing signal generated by the first sensor element 13 may be used to measure a tested current between 0 and 40 A that runs through the sensing area 100, wi...
second embodiment
[0025]With reference to FIG. 2, in the present invention, the first sensor element 13 is a first winding 13 having two first tail ends 131, and the second sensor element 14 is a second winding 14 with two second tail ends 141. The first winding 13 and the second winding 14 are both wound around the ferrite core 12, and the first winding 13 and the second winding 14 have different numbers of turns.
[0026]The current detecting module 10 with the sensor elements being the first winding 13 and the second winding 14 may be used to detect an alternative current (AC). The first winding 13 and the second winding 14 may generate AC first sensing signal and second sensing signal, which are induced by the tested current. Since the numbers of turns are different, the values of the first sensing signal and second sensing signal are in different proportions with the same tested current, and provide different degrees of accuracy. To be more specific, a first winding 13 with a fewer number of turns ...
third embodiment
[0027]With reference to FIG. 3, in a third embodiment, the first winding 13 is wound around the ferrite core 12, and the second winding 14 is wound outside and around the first winding 13. Furthermore, an insulation layer 15 is disposed between the first winding 13 and the second winding 14 to ensure the insulation.
[0028]With reference to FIG. 3, in the present embodiment, the current detecting module 10 further includes a metal circular shell 16. The metal circular shell 16 is mounted inside the circular shell 11 and covers the ferrite core 12 as well as the first winding 13 and the second winding 14. The metal circular shell 16 insulates the first winding 13 and the second winding 14 from external noise signals.
[0029]With reference to FIG. 1, the circular shell 11 of the current detecting module 10 includes a first half shell 111 with a first accommodation space 1110, and a second half shell 112 with a second accommodation space 1120. The first half shell 111 has a first pivot end...
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