prabhukaran3
Member level 5
Measuring 3 Phase voltage through PIC micro controller
Hi everyone,
Currently I am Dealing a project with 3 Phase motor.
I need to measure phase to phase voltage with 5% accuracy without any transformers. I tried with Transformer less power supply like attached image. But its not really working. Anyway I am having one PCB board Its giving exact output what I am looking for.While I do reverse engineering I cant understand really what they did, but I could understand they did something with capacitors and resistors. I have seen 47nK capacitors and 1W resistors here and there. Apart from this everything is embedded thing like LCD, PIC MCU, Buttons and LEDs
Also I want to do forward reverse and control the speed of the motor.
I am looking all your help
Hi everyone,
Currently I am Dealing a project with 3 Phase motor.
I need to measure phase to phase voltage with 5% accuracy without any transformers. I tried with Transformer less power supply like attached image. But its not really working. Anyway I am having one PCB board Its giving exact output what I am looking for.While I do reverse engineering I cant understand really what they did, but I could understand they did something with capacitors and resistors. I have seen 47nK capacitors and 1W resistors here and there. Apart from this everything is embedded thing like LCD, PIC MCU, Buttons and LEDs
Also I want to do forward reverse and control the speed of the motor.
I am looking all your help