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Autodetection of presence of CT on plug-in KRE2 Connector
Didan , 05-27-2019, 05:30 PM
Dear forum, I need to make an autodetect current transformer circuit. I made simulations with an op amp comparator. Basically, if I have Vin < REF I will have output HIGH and if I have Vin > REF I will have output LOW. I have 3 kind of CTs. Voltage outputs CTs: CT1 (100A:0.333V) and CT2(100A:1V) and current output: CT(100A:5A). I need to adjust my resistive mesh to convert current to voltage. This way I can compare if someone plug CT1 and CT2 I will have Vin < REF(2.5V) and output is HIGH. If someone plug current transformer CT3 I will need to convert it between 2.51V-5V, this way I can measure LOW output and then know which CT was connect and treat my signal after it. Someone know how to help me?
Didan , 05-28-2019, 06:21 AM
I made this circuit, but I need adjusts.
robertferanec , 05-28-2019, 06:42 AM
Maybe this is a very wide topic? Maybe if you try to ask simple and specific questions someone could help? It is not my area, but maybe someone will know the answers.
Comments:
Didan, 05-28-2019, 06:52 AM
I did it. Im think its clear now
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