Description
Quad Voltage Comparator Module Voltage Comparators 0-31V Adjustable Voltage Comparison Module LM339 LM393 for Modified
Product Description
Module name: 4-way voltage comparison module
Function Description
Function 1: Input a voltage and compare it with the reference voltage set on the module (the reference voltage can be set by an adjustable resistor), when the input voltage is greater than the reference voltage, the relay is closed (10-9 closed, 10-11 open) ; When the input voltage is less than the reference voltage, the relay will not act. Function 2: Input two voltage signals A and B to be compared. When voltage signal A is greater than voltage signal B, the relay is closed (10-9 is closed and 10-11 is open); when voltage signal A is less than voltage signal B, the relay No action. Function 3: Input a voltage and compare it with the reference voltage set on the module (the reference voltage can be set by an adjustable resistor), when the input voltage is less than the reference voltage, the relay is closed (10-9 closed, 11-10 open ); When the input voltage is greater than the reference voltage, the relay will not act. Reference voltage: 4 voltage comparator modules, adding a reference voltage regulator circuit, the reference voltage is not affected by the change of the module's power supply voltage, the reference voltage can be adjusted in the range of 0-31V, and the adjustable accuracy is 0.01V.
Specification
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Module usage
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automotive circuit modification circuit, industrial control equipment, experimental test, circuit application test, etc.
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Working voltage
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DC DC5V \ DC12V \ DC24V can be optional
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Working current
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DC5V: 350ma \ DC12V: 200ma \ DC24V: 150ma
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Module size
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90x65x20mm (length x width x height)
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Installation Instructions
Pin description
[1] Positive power supply [2] Negative power supply [3] DC socket, the size is: 5.5-2.1mm PS: [1-2] and [3] are connected in parallel, you can choose one of them according to your specific needs. [4] The positive phase input terminal of channel 2 (text printing CH1+, CH2+, CH3+, CH4+ are all positive phase input terminals) [5] The ground terminal of channel 2 (the text printed GND is the ground) [6] Channel 2 inverting input terminal (text printing CH1-, CH2-, CH3-, CH4- are all inverting input terminals) [7] Adjust the reference voltage, the reference voltage value of function 1 and function 3 can be adjusted by this potentiometer [8] Function two jumper setting, when you want to use function two, you need to disconnect the jumper [9] Relay normally open pin [10] Relay common pin [11] The relay is normally closed. [12] Relay status indicator, the relay pull-in light is on, the relay is off, the light is off [13] Power connection indicator, as long as [1-2] or [3] is correctly connected to the power, the indicator light will be on.
Function one description
Take CH2 channel two as an example to describe the working process of function one: The first step, select 1-2 or 3 input power, 13 red light is on, keep the jumper 8 as the function and jumper setting mode, adjust the 7 potentiometer, pass the test of the voltage value of No. 6, and the voltage value of pin 6 is the reference Voltage. In the second step, input the positive pole of the voltage to be compared to pin 4, and connect the negative pole of the voltage to be compared to 5. Conclusion: If the voltage value of the 4th input is higher than the set reference voltage value (No. 6), the relay absorbs, 10-9 is on, and 10-11 is off; if the voltage value of the 4th input is less than the set reference Voltage value (No. 6), the relay does not operate, 10-11 conducts. Remarks: All 4 channels can work independently without affecting each other, and different working methods can be set Remarks: The multimeter is used to test the reference voltage. The multimeter is set to DC voltage, the black test lead of the multimeter is placed on pin 2 and the red test lead is placed on pin 6. Adjust the 7 potentiometer, you can see the voltage value of the multimeter is changing, this value is the reference voltage value.
Function two description
Taking CH2 channel two as an example, describe the working process of function two: The first step is to select 1-2 or 3 input power, 13 red light is on, and jumper 8 is removed. In the second step, input the positive pole of the voltage to be compared from pin 4 and pin 6, and connect the negative pole of the voltage to be compared to pin 5. Conclusion: If the voltage value of the 4th input is higher than the voltage value of the 6th input, the relay absorbs, 10-9 turns on, and 10-11 turns off; If the voltage value of the 4th input is less than the voltage value of the 6th input, the relay will not operate and 10-11 will be turned on. Remarks: All 4 channels can work independently without affecting each other, and different working methods can be set.
Function three description: the realization function is opposite to the function
Take CH2 channel 2 as an example to describe the working process of function 3: The first step, select 1-2 or 3 input power, 13 red light is on, keep the jumper 8 as the function three jumper setting mode, adjust the 7 potentiometer, pass the test of the voltage value of No. 4, the voltage value of pin 4 is the reference Voltage. In the second step, input the positive pole of the voltage to be compared with pin 6 and connect the negative pole of the voltage to be compared with pin 5. Conclusion: If the voltage value of the 6th input is higher than the set reference voltage value (4th), the relay will not operate and 10-11 will be turned on; If the voltage value of the 6th input is less than the set reference voltage value (4th), the relay is activated, 10-9 turns on, and 10-11 turns off. Remarks: All 4 channels can work independently without affecting each other, and different working modes can be set. Remarks: The multimeter is used to test the reference voltage. The multimeter is set to DC voltage, the black test lead of the multimeter is placed on pin 2 and the red test lead is placed on pin 4. Adjust the 7 potentiometer, you can see the voltage value of the multimeter is changing, this value is the reference voltage value.
DC control wiring diagram (maximum current 10A)
Firstly, [1] and [10] are connected together to connect the positive pole of the power supply, so that the common pin of the relay is positively charged, and [2] is connected Negative power supply; The second number 9 is the positive output after control. When the relay is closed, 10-9 is on, and the voltage of 9 is equal to the voltage of the input power; when the relay is off, 10-9 is open, and the voltage of 9 is 0V. The negative pole of the third load device is connected with 2.
Control AC wiring diagram (maximum current 10A)
First, use the pair of normally open pins 10-9 to control the conduction and disconnection of the live wire or the neutral wire Second, when the relay is closed, 10-9 is on, which is equivalent to the live wire is connected, and the load is energized and works; When the relay is disconnected, 10-9 is disconnected, which is equivalent to disconnection of the live wire, and the load loses power and stops.
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