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.Testing circuit
Working voltage: DC DC5V, 12V, 24V
Working current: DC 5V: 350mA; DC 12V: 200mA; DC 24V: 150mA
Size : Voltage Comparator Relay Module
Type : Voltage Comparator Relay Module
Style : Voltage Comparator Relay Module
Output Type : Voltage Comparator Relay Module
Model Number : LM393
DIY Supplies : ELECTRICAL
Origin : Mainland China
Certification : none