Im building something that looks like rev counter. This is the first time im using inductive sensor. The signal from the sensor is passed to Schmitt trigger. The problem is what king of protection to use? Im thinking about 2 clipping diodes to cut the sine to 0 and 5 volts. The problem is that in practice the low voltage is -0,7 which is bad for the CMOS IC (I thing so??). Is there any way to limit the sine to 0-1 and 4-5 volts? (I want to avoid using battery, this is the only method that i know).
Thank in advance
Thank in advance