You do not need a microcontroller to do this. An MCU is a fine method, but you can also do it with a very well known circuit called a 'sample & hold' circuit.I want to design a circuit in which the maximum dc 50 volt can be compared with previous voltage of same source. After that on the basic of programming it act accordingly .Suggest the controller .View attachment 158394
Thanks for the reply.You need to define your question more precisely. Is the previous sample 1 nS ago or 10 years ago ?
I don't think you will find that an IC that will do what you want. I think you will have to use a microcontroller with a built in ADC (Or external ADC if the internal ones available do not meet your reqirements. You will have to scale down the 50 volts to match the specification of the ADC. (Probably to 5 volts or 3.3 volts. You will then have to program the microcontroller to take the voltage measurments, store them and then make the desisions based on what you actually require.
Les.
I want to know that signal is grater or less than the otherWhen you say "compare", do you mean you simply want to know if one measurement is greater/less than the other, or do you mean you need to know (and possibly display) the two measurement values? The latter would almost certainly involve a microcontroller.
Then you could use two sample-and-holds and a comparator.I want to know that signal is grater or less than the other
by Jake Hertz
by Jake Hertz
by Aaron Carman