- #1
jescriba
- 8
- 0
I'm trying to build a switch that is closed only when the input signal is roughly the same signal over some time. So when ever the frequency of the input changes by a significant amount the switch opens, and when the input frequency is roughly constant the switch is closed. I'm building this in analog and wanted some advice/ideas. 1) I was thinking of taking the signal and passing it through a RC Highpass then putting the signal through a differential op amp configuration to subtract the incoming signal with a slightly delayed signal. And if the difference is sufficiently small (in reality it won't be zero) to go through a transistor not gate. 2) The other way I was thinking of doing this is passing it through some sort of comparator test.
Would this in practice actually work?
Any suggestions and recommendations welcome. Thanks.
Would this in practice actually work?
Any suggestions and recommendations welcome. Thanks.