Good day !!!
I am designing a comparator circuit that need to add the hysteresis.
It will be used to detect the existence of 47Kohm resistor at the input before the comparator gives High Output to turn ON another IC at the output.
Few test circuits have been developed, but I still can't get a correct desirable output. When i vary the resistance to more than 47Kohm, the output of comparator will be always HIGH. When i vary the resistance to lower beyond than 47Kohm (i.e 1Kohm) then the output of the comparator will be only Low.
This is beyond than what I expect!!
Suppose, the circuit should give HIGH output when the resistance at the input is 47Kohm with the tolerance of 5% only.
Please please please help me..... !!!![Frown :( :(](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I am designing a comparator circuit that need to add the hysteresis.
It will be used to detect the existence of 47Kohm resistor at the input before the comparator gives High Output to turn ON another IC at the output.
Few test circuits have been developed, but I still can't get a correct desirable output. When i vary the resistance to more than 47Kohm, the output of comparator will be always HIGH. When i vary the resistance to lower beyond than 47Kohm (i.e 1Kohm) then the output of the comparator will be only Low.
This is beyond than what I expect!!
Suppose, the circuit should give HIGH output when the resistance at the input is 47Kohm with the tolerance of 5% only.
Please please please help me..... !!!