Hi,
I have an AC current transducer that outputs either 10 mV per amp or 1 mV per amp. The range is selected by the user. Here is the transducer.
http://www.dealexcel.com/old/ms3302-clamp-meter-transducer-ac-current-true-rms-product-442.html
I want to build a circuit based on a PIC microcontroller. When the current through the wire to which the transducer is clamped to exceeds 0.5A, I would like to make one of the PIC inputs low. I am familiar with programing the PIC and should be ok there. I am not sure on what the best approach is to convert the mV from the transducer to something I can use to send the PIC. I am using a 12F675. I am familar with ADC if required.
The transducer has a maximum rating of 400A. I would like to be able to send the PIC input low for any current between 0.5A and 400A. I would like to be able to do this for either the 10mV/A or the 1mV/A range.
I have read about opamps, but never used on in a circuit before. Any suggestions on the best way of doing this would be appreciated.
Thank you
JG
I have an AC current transducer that outputs either 10 mV per amp or 1 mV per amp. The range is selected by the user. Here is the transducer.
http://www.dealexcel.com/old/ms3302-clamp-meter-transducer-ac-current-true-rms-product-442.html
I want to build a circuit based on a PIC microcontroller. When the current through the wire to which the transducer is clamped to exceeds 0.5A, I would like to make one of the PIC inputs low. I am familiar with programing the PIC and should be ok there. I am not sure on what the best approach is to convert the mV from the transducer to something I can use to send the PIC. I am using a 12F675. I am familar with ADC if required.
The transducer has a maximum rating of 400A. I would like to be able to send the PIC input low for any current between 0.5A and 400A. I would like to be able to do this for either the 10mV/A or the 1mV/A range.
I have read about opamps, but never used on in a circuit before. Any suggestions on the best way of doing this would be appreciated.
Thank you
JG