Description
DC5V 12V 24V 1 Channel LM393 Voltage Comparator Voltage Comparison Module Voltage Comparator IC LM393N Circuit
Product Description
Module name: 1 way voltage comparator module
Function Description
Function 1: Input a voltage to be compared with the reference voltage set on the module (the reference voltage can be set by the adjustable potentiometer on the module) to compare. When the input voltage is greater than the set reference voltage, the relay is closed; when the input voltage is less than or equal to the reference voltage, the module does not act. Function 2: Input two voltage signals to be compared to 1 and 3 respectively. When voltage signal 3 is greater than voltage signal 1, the relay is closed; when voltage signal 3 is less than or equal to voltage signal 1, the relay does not act.
Function 3: Input-a voltage to be compared with the reference voltage set on the module (the reference voltage can be set by the adjustable potentiometer on the module) to compare. When the input voltage is less than the set reference voltage, the relay is closed; when the input voltage is less than or equal to the reference voltage, the relay does not act. (The opposite of function)
Reference voltage: The reference voltage of the module is obtained by dividing the positive pole of the input power supply through a precision resistor. The positive voltage of the input power supply determines the range of the reference voltage. For example: the positive input of the power supply is 12V, then the adjustable range of the reference voltage is 0~12V.
Specification
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item
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value
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Module usage
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industrial control equipment, instrumentation, experimental test, automotive circuit modification, etc.
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Working voltage
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DC DC5V \ DC12V \ DC24V
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Working current
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DC5V-50ma \ DC12V-35ma \ DC24V-25ma
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Module appearance
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45x30x18mm (length x width x height)
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Installation Instructions
Pin Description
[1] Inverting input terminal of voltage comparator (-) [2] The negative pole is connected to pin 5 [3] The positive phase input terminal of the voltage comparator (+) [4] Power input positive [5] Power input negative [6] Relay normally open pin [7] Relay common pin. [8] Relay normally closed foot [9] Relay status indicator, the light is on when the relay is closed (7-6 is on), and the light is off when the relay is off (7-6 is off). [10] Jump cap setting function 1, function 2, function 3 jump cap setting method, as shown in the figure [11] Adjustable potentiometer, used to adjust the reference voltage value
Function 1 description
The first step, 4 and 5 input working power, adjust the 11th, get the value of the reference voltage by testing the 11th pin; (the black test lead of the multimeter is placed at 5, the red test lead is tested 1) The second step is to input the voltage signal to be compared from No. 3. The negative electrode of the voltage signal to be compared is connected to 2. If it is a common ground, it does not need to be connected to 2. Conclusion: If the voltage of No. 3 is higher than the set reference voltage No. 1, then the 9th light is on, the relay is closed, 7-6 is on, and 8-7 is off; If the 3rd voltage is less than or equal to the set reference voltage (1st), the 9th light is off and the relay keeps 8-7 on.
Function 2 description
The first step is to remove the jumper at position 10; The second step, 4 and 5 input working power, input the voltage signal to be compared from 1 and 3 respectively, and the negative pole of the voltage signal to be compared is connected to 2, if it is a common ground, it can not be connected to 2. Conclusion: If the voltage of No. 3 is higher than the voltage of No. 1, the light is on, the relay is closed, 7-6 is on, and 8-7 is off; If the voltage of No. 3 is less than or equal to the voltage of No. 1, the light is off and the relay keeps 8-7 on.
Function 3 description
The first step is to set the 10th jumper to function E mode according to the figure The second step, 4 and 5 input working power, adjust the 10th, get the reference voltage value by testing the 3rd; (The black test lead of the multimeter is placed at 5, the red test lead is tested 3) The third step is to input the voltage signal to be compared from No. 1. The negative electrode of the voltage signal to be compared is connected to 2. If it is a common ground, it can not be connected to 2. Conclusion: If the voltage of No. 1 is lower than the set reference voltage (No. 3), then the 9th light is on, the relay suction stage, 7-6 is on, 8-7 is off; If the voltage of No. 1 is greater than or equal to the set reference voltage (No. 3), the ninth light is off and the relay keeps 8-7 on.
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