x.10 protocol

[hks1233]

a filter to extract 120khz signal from 230v 50hz line.....by distorting all its harmonics

 

[blueroomelectronics]

You want to stop X10 signals or decode them?

 

[hks1233]

decode x.10 signals

 

[blueroomelectronics]

Then you need a microcontroller. There is an app note on Microchips site using the 16F877 as an X10 device with code and schematics.

 

[hks1233]

designed a filter to extract 120khz data signal.....but its contain harmonics of ac...i need to attenuate that harmonics

 

[blueroomelectronics]

Like I said, the Microchip app note contains a complete design including 120kHz filter.

 

[hks1233]

that filter using cd4069 is not working.....(tuned amplifier using cd4069)

 

[blueroomelectronics]

Post your schematic.
Here's the Microchip app note using a 4069, is that what you built?
https://www.electro-tech-online.com/custompdfs/2009/01/00236a.pdf

 

[hks1233]

tuned amplifier in the page 21 of above pdf is not working.....any way to tune 120khz

 

[blueroomelectronics]

Did you build it exactly as shown, did you substitute parts? It should work fine.

 

[hks1233]

yes.......but i dont know how an hex inverter work as tuned amplifier.........but the untuned part is ok

 

[blueroomelectronics]

Put a scope on it. You sure built it fast.

 

[hks1233]

that tuned amplifier produce output for all frequency.......as a result of that the dc volatge at the envelope detector is fluctuating

 

[blueroomelectronics]

How did you build it and test it so quickly? Is it on a breadboard or PCB?

 

[hks1233]

doing this as project using this pdf u providied from the past 1 week.......all things r working in that ckt except tuned amlifier

 

[blueroomelectronics]

Did you actually build it or are you running it on a simulator?

 

[hks1233]

built it...........

 

[blueroomelectronics]

And you built it without parts substituting, I would suggest an entry on Microchips own forums as it is a Microchip App note. I can only assume many have built it without problems else they'd change the app note.

 

[kripton2035]

you may take a look at the schematic at :
**broken link removed**

there is a tuned 120khz filter with simple transistors

I simulated this filter and it seems to work.

I also simulated the filter with the 4069 of microchip app note and I couldnt make it work ...

good luck
also as I'm planning to make such thing please post here if it works really !