LM393 Voltage Comparator Module Adjustable Precision Signal Waveform Shaping High Level Dual Output LED Indication Modul

Description LM393 general purpose single supply comparator module the module realizes voltage precision linear adjustment realizes high and low level and load drive dual output and is convenient for front end acquisition and single chip microcomputer switch acquisition Specifications Module input voltage 4 5 28VModule size length 39 5mm width 17mmComparator chip LM393 comparator chipThe module sensor can connect many sensors like Resistive sensors NTC thermistor temperature sensors photoresistor photosensitive sensors vibration sensors etc Package Include 1 Voltage Comparator ModuleUsing Method Use the reference voltage adjustment potentiometer to adjust the reference voltage and compare the voltage generated by the sensor and the voltage dividing resistor with the reference voltage to realize the output of the comparison result of high and low levels At the same time after redesign on the basis of the original high and low level output a high current drive output port is added which can directly drive low power loads such as relays optocouplers LEDs and buzzers Note The valid range of threshold voltage is 0 power supply voltage minus 1V For example if the power supply is 5V the effective value of the reference threshold voltage is 0 4V which can realize comparative output If in the case of 5V power supply the threshold voltage is greater than 4V then the output will always remain low equal to no output