Two Way Voltage Comparison Module Comparator Voltage Relay Voltage Comparison LM393 IC Dual Comparator

Two Way Voltage Comparison Module
$11.05
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Description
Two Way Voltage Comparison Module Comparator Voltage Relay Voltage Comparison LM393 IC Dual Comparator
Product Description
Function Description: Function 1: Input a voltage to compare 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 (11-10 closed, 11-12 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 respectively, when voltage signal A is greater than voltage signal B, the relay is closed (11-10 closed, 11-12 open); when voltage signal A is less than voltage signal B, the relay No action. Function 3: Input a voltage and compare 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 (11-10 closed, 11-12 open) ; When the input voltage is greater than the reference voltage, the relay will not act.
Specification
item
value
Module name
2 way voltage comparison module
Reference voltage
The reference voltage of the module is obtained by dividing the input voltage ([1] or [2-3] input voltage value) through precision resistors. The input voltage value determines the range of the reference voltage. 
For example, the input voltage value is 12V, then the adjustable range of the reference voltage is 0-12V.
Module usage
automotive circuit modification circuit, industrial control equipment, test test, circuit application test, etc.
Working voltage
DC5V \ 12V \ 24V
Working current
DC5V: 70ma \ DC12V: 50ma \ DC24V: 45ma
Module size
63x45x18mm (length x width x height)
Installation Instructions
Pin description
[1] DC socket, the size is: 5.5-2.1MM. [2] Positive power supply [3] Negative power supply [1] and [2-3] are connected in parallel, select one of the wiring methods according to specific needs [4] The first positive-phase input terminal (text printing CH1+, CH2+ are both positive-phase input terminals) [5] Ground terminal of the first road [6] The first inverting input terminal (text printing CH1-, CH2- are both inverting input terminals) [7] The first reference voltage setting, function-and function 3 candidate reference voltage values ​​can be adjusted by this potentiometer. [8] Function one, two and three jumper cap settings, you need to remove the jumper cap when using function two [9] The first relay status indicator, the relay closing light is on, the relay disconnecting light is off [10] Normally open pin of relay [11] Common pin of the relay [12] Normally closed foot of relay [13] Power indicator, as long as [1] or [2-3] is correctly connected to the power source, the indicator will be on

Function 1 description

Take the first path as an example to describe the working process of function one: The first step, select [1] or [2-3] to input power, 13 red light is on, keep jumper 8 as the function one jumper setting mode, adjust the 7 potentiometer, pass the test of the voltage value of No. 6 and the voltage value of No. 6 The voltage value is the reference voltage. In the second step, input the positive pole of the voltage to be compared with pin 4, and connect the negative pole of the voltage to be compared with pin 5. Conclusion: If the voltage value of the 4th input is higher than the set reference voltage value (No. 6), the relay will absorb, 10-11 will be turned on, and 11-12 will be turned off; If the voltage value of the 4th input is less than the set reference voltage value (No. 6), the relay will not operate and 11-12 will be turned on. Remarks: Both channels can work independently without affecting each other, and different working methods can be set Use a multimeter to test the reference voltage, set the multimeter to the test DC voltage range, place the black test lead on pin 3 and the red test lead on pin 6. Adjust the 7 potentiometer, you can see the voltage value of the multimeter is changing, this value is the reference voltage.

Function 2 description

Take the first path as an example to describe the working process of function two:. The first step, select [1] or [2-3] to input power, 13 red light is on, remove the jumper 8 here; The second step is to 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 5; Conclusion: If the voltage value of the 4th input is higher than the set reference voltage value (No. 6), the relay will absorb, 10-11 will be turned on, and 11-12 will be turned off; If the voltage value of the 4th input is less than the set reference voltage value (No. 6), the relay will not operate and 11-12 will be turned on. Remarks: Both channels can work independently without affecting each other, and different working methods can be set.

[Function three description, the realized function is opposite to the function]

Take the first path as an example to describe the working process of function three: The first step is to select [1] or [2-3] to input the power, the 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 No. 4 The voltage value 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 11-12 will be turned on; If the voltage value of the 6th input is less than the set reference voltage value (4th), the relay will absorb, 10-11 On, 11-12 off. Remarks: Both channels can work independently without affecting each other, and different working methods can be set. Use a multimeter to test the reference voltage, set the multimeter to the test DC voltage range, put the black test lead on pin 3 and the red test lead on pin 4. Adjust the 7 potentiometer, you can see the voltage value of the multimeter is changing, this value is the reference voltage.
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