1.Magnetic balance Hall voltage sensor
The primary current VP is converted to the primary current IP by the primary side resistance, and the magnetic flux generated by the IP and the secondary current IS generated by the amplification of the Hall voltage are balanced by the magnetic flux of the secondary winding. The secondary current IS accurately reflects the primary voltage.
2. Magnetic modulation voltage sensor
Hall sensors are not used in this series of sensors. It uses two sets of the same magnetic circuit and secondary side coil. Its working principle is that the compensation current generated by the internal square wave oscillation circuit compensates the ampoule number to achieve the magnetic field balance.
Our "300" Series products belong to this principle, such as DC voltage sensor.
3. High resistance isolated voltage sensor
The primary side voltage measured by the series of voltage sensors is divided by the primary side resistance value resistor, and the generated low voltage signal is output to the secondary side amplifying circuit to output a measured voltage signal Vs.
Our "400" Series products belong to this principle, such as WBV414U09.
4. Isolated Amplifier Voltage Sensor
The primary side voltage measured by the series of voltage sensors is divided by the high-resistance resistor of the primary side, and the low-voltage signal generated by the series is transmitted to the secondary side amplifying circuit by a high-precision photoelectric isolation element to output a measured voltage signal; The conversion circuit outputs a measurement current signal IS.