manju1010
Newbie level 3
i am using pic microcontroller and i have connect 12V DC (150mA)signals to the inputs. Since, microcontroller input pins are CMOS logic and cannot sink more than 20mA so i have used ULN2003.
the 12V inputs are connected to the input of ULN and the output of ULN are connected to microcontroller input through a pull up registor.
i need isolation between 12V and microcontroller. does ULN provide any isolation??
the best solution was to use optocouplers but they are very costly.
is buffer a good solution insted of ULN?
please give your views on this.....
best regards,
Manjunath
the 12V inputs are connected to the input of ULN and the output of ULN are connected to microcontroller input through a pull up registor.
i need isolation between 12V and microcontroller. does ULN provide any isolation??
the best solution was to use optocouplers but they are very costly.
is buffer a good solution insted of ULN?
please give your views on this.....
best regards,
Manjunath