Design of Current Sensor Based on HCPL-7840 Isolation Amplifier
Xuhong Wang · Micromotors · 2012
This thesis designed a kind of current sensor based on optical isolators HCPL-7840,which used a high precision,low-resistance sampling resistor.Through the HCPL-7840 and a series of op-amp,the current signal can be converted into voltage,the voltage signal is proportional to the collected current.Experiments show that the sensor has high accuracy for some current-sampling occasions.