As shown in the figure above, R1 and R2 with the same resistance form a voltage divider, so that the voltages of the upper and lower parts are equal. The midpoint of the voltage divider is connected to the non-inverting input of the operational amplifier, and the operational amplifier is connected to a voltage follower so that the potential of the O' terminal and the O terminal are equal. The O' end is again a virtual location, which must be isolated from the ground where the input power is applied.
If the bipolar power supply is directly taken out from R1 and R2, the internal resistance of the power supply is large, the load capacity is poor, and the practical value is not large. After using the operational amplifier, the two sets of output power sources have a low internal resistance and the load capacity is enhanced.
Magnetoelectric Proximity Switch
The magnetic proximity switch is a kind of proximity switch. The magnetic proximity switch is one of many types in the sensor family. It is made by the use of electromagnetic working principle and advanced technology. It is a position sensor. It can transform the non-electricity or electromagnetic quantity into the desired electric signal through the change of the positional relationship between the sensor and the object, so as to achieve the purpose of control or measurement.
Motion Sensor Control Switch,Photoelectric Switch Sensors,Plug In Photoelectric Switch,Magnetoelectric Proximity Switches
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