Description
DC4.5~30V Wide Voltage Sine Wave to Square Wave Voltage Converter LM393 Voltage Comparator Circuit
Product Description
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 positive output of 9 is energized; when the input voltage is less than or equal to the reference voltage, the module does not operate. Function 2: Input two voltage signals to be compared to 3 and 5 respectively. When the voltage signal 3 is greater than the voltage signal 5, the output of 9 is positive; when the voltage signal 3 is less than or equal to the voltage signal 5, the module does not operate. 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 9 output positive electrode has electricity; when the input voltage is greater than or equal to the reference voltage, the module does not operate. (The opposite of function)
Specification
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item
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value
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Module name
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sine wave to square wave module\voltage comparator wide voltage version
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Working voltage
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DC 4.5~30V
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Reference voltage
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The reference voltage of the module is obtained by dividing the positive electrode 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 18V, then the adjustable range of the reference voltage is 0~18V.
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Module usage
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sine wave to square wave, industrial control equipment, instrumentation, experimental test, etc.
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Module appearance
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35x29x18mm (length x width x height)
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Installation Instructions
Pin description
[1] Power input positive [2] Power input negative [3] The positive phase input terminal of the voltage comparator (+) [4] negative pole, Connect with pin 2 [5] Inverting input terminal of voltage comparator (-) [6] Jumper cap setting, function one, function two, function three jumper cap setting mode, [7] Adjustable potentiometer, used to adjust the reference voltage value, the reference voltage value can be known by testing pin 3\5 [8] Status indicator, the light is on when pin 9 outputs positive electricity, and the indicator light is off when pin 9 does not output. [9] Output positive (no reverse input voltage on pin 9 will burn the power tube) [10] Output negative pole, connected to pin 2 and pin 4
Function 1 description, connect sine wave to square wave according to this picture
The first step, 1 and 2 input working power, adjust the 7th, get the value of the reference voltage by testing the 5th pin; (the multimeter black test lead is placed in 2, the red test lead is tested 5) 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 4, if it is a common ground, it can not be connected to 4. Conclusion: If the voltage of No. 3 is higher than the set reference voltage (No. 5), the output of 9 is positive, and the lamp 8 is on; if the voltage of No. 3 is less than or equal to the set reference voltage (No. 5), then 9 is not output. 8 The light is off.
Precautions for converting sine wave to square wave
① 1 and 2 input DC working voltage DC5-30V, the positive pole of sine wave signal is connected to 3, and the negative pole of sine wave signal is connected to 4; ②The square wave is output from 9, and the amplitude of the square wave is equal to the voltage value of 1 input. For example, if 1 inputs 8V, the amplitude of the square wave after conversion is also 8V. ③3 The amplitude of the input sine wave should not be greater than 31V, the chip will be broken if it is greater than 31V.
Function 2 description
The first step is to remove the jumper at position 6;
In the second step, input the working power in 1 and 2, and input the voltage signals to be compared from the 3 and 5 respectively, and the voltage to be compared
The negative pole of the voltage signal is connected to 4, if it is a common ground, it can not be connected to 4. Conclusion: If the voltage of No. 3 is higher than the voltage of No. 5, then 9 outputs positive and 8 lights are on; If the 3rd voltage is less than or equal to the 5th voltage, 9 will not output and 8 will not light up.Function 3 description
The first step is to set the 6 jumpers to function three modes according to the diagram The second step, 1 and 2 input the working power, adjust the 7th, get the value of the reference voltage by testing the 3rd pin; (the black test lead of the multimeter is placed in 2, the red test lead is tested 3) The third step is to input the voltage signal to be compared from No. 5. The negative electrode of the voltage signal to be compared is connected to 4, and 4 is not necessary if it is a common ground. Conclusion: If the voltage of No. 5 is lower than the set reference voltage (No. 3), the output of 9 is positive, and the light of 8 is on; If the voltage of No. 5 is greater than or equal to the set reference voltage (No. 3), then 9 will not output and 8 will not light up.
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