16F877 ADC using the Allegro ACS754 Current Sensor

[DavyJones]

Just got off the phone with Allegro support who called me back after I emailed them just to confirm I wasn't going crazy and I didn't hook up something incorrectly and sure enough the Vout on the ACS754 will produce a sine wave proportionate to the current being used. So I simplified the heck out of my prorgam and just have it loop through as quickly as possible keeping track of the MAX and displaying that at every 300 count. I will experiment with that and watch it closely. I need to incorporate this into a circuit with another sensor, pressure transducer, hopefully I can run that pressure transducer and 2 of these Allegro ACS754's all on my 16F877.

They did tell me that the ACS754 is going to go away and be replace by the ACS756 so... He also told me that the have an 8 pin version that for my application will read up to 30 amps and I should really be looking at that. He also told me the data sheet for the ACS712 has some peek voltage circuit examples which I am going to look at right now.

Again if anyones worked with one of these current sensor and has any good code examples they found worked I would not mind taking a peek at that.

Thanks
David

[amgen]

You could rectify the output and add filter (resister/capicator) and have a DC voltage related to the AC current. Still would have the offset voltage, about 2 volts which you subtract out anyway. 10 micro-farad and 100K ohms will smooth output.
don

[DavyJones]

You could rectify the output and add filter (resister/capicator) and have a DC voltage related to the AC current. Still would have the offset voltage, about 2 volts which you subtract out anyway. 10 micro-farad and 100K ohms will smooth output.
don

Don, Thanks I will give that a try. I'll let everyone know how that turns out.