Phase sequence IC - Electronic Circuits Projects Diagrams Free

leonel · 13th October 2006, 11:12 AM

Does anyone knows any IC that monitors my phase sequence?

**Nigel Goodwin** · 13th October 2006, 11:17 AM

How about giving some details?, your question is pretty meaningless?.

Do you mean for identifying three phase mains?, how are we supposed to know what you mean?.

leonel · 13th October 2006, 12:59 PM

Sorry...
I want to know the phase sequence, for example if two phase are reversed, L1-L3-L2, light a led, and everything is ok L1-L2-L3 my led stay off

hjames · 13th October 2006, 03:28 PM

Use a flip-flop. Connect the clock to L2, and the input to L1. If the output is high, then it's L1-L2-L3, if low it's L1-L3-L2. (Obviously condition the signals so that they are compatible with the logic level flip-flop). If you add more flipflops in the same way, you can probably detect missing phases.

Hero999 · 13th October 2006, 03:42 PM

Is this mains?

You need to run this from step down transormers. Three cheep and nasty 1.2VA tranformers will work.

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13th October 2006, 11:12 AM	#1
leonel	Phase sequence IC Does anyone knows any IC that monitors my phase sequence?

13th October 2006, 11:17 AM	#2
Nigel Goodwin	How about giving some details?, your question is pretty meaningless?. Do you mean for identifying three phase mains?, how are we supposed to know what you mean?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

13th October 2006, 12:59 PM	#3
leonel	Sorry... I want to know the phase sequence, for example if two phase are reversed, L1-L3-L2, light a led, and everything is ok L1-L2-L3 my led stay off

13th October 2006, 03:28 PM	#4
hjames	Use a flip-flop. Connect the clock to L2, and the input to L1. If the output is high, then it's L1-L2-L3, if low it's L1-L3-L2. (Obviously condition the signals so that they are compatible with the logic level flip-flop). If you add more flipflops in the same way, you can probably detect missing phases.

13th October 2006, 03:42 PM	#5
Hero999	Is this mains? You need to run this from step down transormers. Three cheep and nasty 1.2VA tranformers will work. __________________ I do not answer private messages asking for help because no one else can: benefit from advice I may give or correct me if I'm wrong. Please ask on the open forum if you have a question and I'll be happy to help, if I know the answer.