I want to design a module to detecte Thunderstruck voltage.
I use a amplifier(TL084) formed a voltage follower, when the thunder came, the out put of the voltage follower has a little delay than the input voltage. During the periods of rising edge output voltage will a little lower than input. During the periods of falling edge output voltage will a little higher than input.
I plan connect the input and output of TL084 to ADCMP602 VP(2) and VN (3) , as bellow figure.IN+ is signal input.
I want know the reason of caused plush spike, and dose it suite for this application?
I also use opa615 to pick up the Peak voltage, do you have some advice part to replace it?