Hi everyone .
I want to make an alternating current sensor for audio frequencies (20Hz-20KHz) for current starting from 50mA. many very small toroidal plastic nuclei (therefore air permeability) placed next to each other to form a straight line because the current conductor passes through the central hole of each of them. it is not definitive but a prototype so each toroid is wrapped in a single turn of enamelled copper wire turns.
the output of the last turn of the first toroid is connected to the first turn of the second toroid and so on until the last one, therefore the turns of all the toroids are connected to each other. this is to exploit a greater quantity of magnetic field (which is at most in contact with the wire where the electric current passes) and to have a single total winding.
naturally there must be no empty space between the conductor and the toroidal rings. the signal coming out of the sensor will be amplified.
the measurements of the toroidal rings are as follows: internal diameter 6mm external diameter 10mm round section, copper wire section 0.02mm. measured inductance of a single wound toroid 0.0000065H.
I have two questions for you.
to have the maximum intensity of the magnetic field is it better to use a solid section conductor or a tube to pass all the current near the turns of the toroids?.
Can you calculate the voltage I get at the output of each toroid for a 50 mA current? .
Thank you
I want to make an alternating current sensor for audio frequencies (20Hz-20KHz) for current starting from 50mA. many very small toroidal plastic nuclei (therefore air permeability) placed next to each other to form a straight line because the current conductor passes through the central hole of each of them. it is not definitive but a prototype so each toroid is wrapped in a single turn of enamelled copper wire turns.
the output of the last turn of the first toroid is connected to the first turn of the second toroid and so on until the last one, therefore the turns of all the toroids are connected to each other. this is to exploit a greater quantity of magnetic field (which is at most in contact with the wire where the electric current passes) and to have a single total winding.
naturally there must be no empty space between the conductor and the toroidal rings. the signal coming out of the sensor will be amplified.
the measurements of the toroidal rings are as follows: internal diameter 6mm external diameter 10mm round section, copper wire section 0.02mm. measured inductance of a single wound toroid 0.0000065H.
I have two questions for you.
to have the maximum intensity of the magnetic field is it better to use a solid section conductor or a tube to pass all the current near the turns of the toroids?.
Can you calculate the voltage I get at the output of each toroid for a 50 mA current? .
Thank you
