Description
This is a 1-way voltage comparator module. It can be used to compare voltages, and it has an adjustable reference voltage.
Module Name: 1-way Voltage Comparator Module.
Operating voltage: DC 12V
Typical operating current (relay pull state): DC12V 25mA;
Standby current (relay closed): about 5uA;
Function description (three functions):
Function 1:
Input a voltage and set the reference voltage on the module (the reference voltage can be set through the adjustable potentiometer) contrast;
When the input voltage is greater than the reference voltage, the relay is closed, the circuit connected;
When the input voltage is less than the reference voltage, the relay is disconnected and the circuit is disconnected.
Function 2:
Respectively inputting two voltage signals A and B to be compared;
When the voltage signal A is greater than the voltage signal B, the relay is closed and the circuit is switched on;
When the voltage signal A is smaller than the voltage signal B, the relay is opened and the circuit is disconnected.
Note: Function 2 requires that the jumper cap of the corresponding channel be unplugged.
Function 3:
Contrary to function 1, disconnect the jumper cap shown in the diagram and short-circuit the back contact in the diagram.
Input a voltage and set the reference voltage on the module (the reference voltage can be set through the adjustable potentiometer) contrast;
When the input voltage is less than the reference voltage, the relay is closed, the circuit connected;
When the input voltage is greater than the reference voltage, the relay is disconnected and the circuit is disconnected.
Reference voltage:
The reference voltage of the module is the input voltage after multi-turn precision potentiometer partial pressure obtained, the input voltage value determines the range of reference voltage value. For example, the input voltage is 12V, then the reference voltage adjustable range is 0-12V.
Related Products
