![]() My ADC is only capable of about 4 steps in this range (8 bit, 3.3V reference = 12mV step), which isn't enough to do much of anything. Where I = 8 A ( the peak value for my equipment), R_L = 10 ohms (Load resistance from the spec), and T = 2000, (the turnnnnn ratio), I predict an output voltage of a measly 40 mV RMS. Using the equation V_out = ( I x R_L ) / T I need to know the turn ratio I assume these are comparable? (-:Īlso, the datasheet only gives specs for R_L < 10 ohms, and no indication of the saturation points with higher resistances. Thanks! Unfortunately, the new datasheet only lists the "Turnn ratio". Spoke two soon as always, 10uF filter cap fixed it. I have a few from eBay and there much more use. But this is proving difficult to test as in works when under test.Īs already mentioned, bring on the 100 amp clamps. It must be something to do with noise or earthing or something as it only does it when not connected to the computer. Well under test conditions anyway.Īs soon as I disconnect the PICKit 3 programmer from the board it start getting spurious readings and my readings can be up to like 5 to 10 amps out and fluctuating. I have connected two of these sensors to a PIC24 that basically reads each sensor 1500 times and records the highest reading from each then forwards the value to a second PIC24 set up to display the values converted to amps using two 4 digit 7-Segment Displays.Īmazingly, all works perfectly. ![]() I am struggling a bit with this sensor and I am hoping someone might be able to shed a bit of light for me. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |