Hello there-
I have a permanent magnet inductive sensor and tone ring setup for measuring rotational speed that outputs AC sine wave voltage in the range of 0.65V to 8.5V and frequency from about 37Hz to 1.5KHz.
I am wanting to convert this output to be microcomputer controlled so I need 0-5v DC or at least a safe frequency input. Could I just use an opticoupler for the frequency directly or do I need to scale the voltage to 0-5 volt dc with a frequency to voltage chip? Or rectifier and voltage divider from 8.5V ac to 5 volt dc?
Thanks!
I have a permanent magnet inductive sensor and tone ring setup for measuring rotational speed that outputs AC sine wave voltage in the range of 0.65V to 8.5V and frequency from about 37Hz to 1.5KHz.
I am wanting to convert this output to be microcomputer controlled so I need 0-5v DC or at least a safe frequency input. Could I just use an opticoupler for the frequency directly or do I need to scale the voltage to 0-5 volt dc with a frequency to voltage chip? Or rectifier and voltage divider from 8.5V ac to 5 volt dc?
Thanks!