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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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7th January 2009, 04:50 PM
| #1 |
 x.10 protocol
a filter to extract 120khz signal from 230v 50hz line.....by distorting all its harmonics
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7th January 2009, 04:52 PM
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You want to stop X10 signals or decode them?
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7th January 2009, 04:55 PM
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decode x.10 signals
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7th January 2009, 04:58 PM
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Then you need a microcontroller. There is an app note on Microchips site using the 16F877 as an X10 device with code and schematics.
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7th January 2009, 05:00 PM
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designed a filter to extract 120khz data signal.....but its contain harmonics of ac...i need to attenuate that harmonics
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7th January 2009, 05:10 PM
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Like I said, the Microchip app note contains a complete design including 120kHz filter.
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7th January 2009, 05:14 PM
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that filter using cd4069 is not working.....(tuned amplifier using cd4069)
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7th January 2009, 05:16 PM
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Post your schematic. Here's the Microchip app note using a 4069, is that what you built? http://ww1.microchip.com/downloads/e...tes/00236a.pdf Last edited by blueroomelectronics; 7th January 2009 at 05:22 PM. | |
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7th January 2009, 05:28 PM
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tuned amplifier in the page 21 of above pdf is not working.....any way to tune 120khz
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7th January 2009, 05:30 PM
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Did you build it exactly as shown, did you substitute parts? It should work fine.
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7th January 2009, 05:36 PM
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yes.......but i dont know how an hex inverter work as tuned amplifier.........but the untuned part is ok
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7th January 2009, 05:37 PM
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Put a scope on it. You sure built it fast.
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7th January 2009, 05:42 PM
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that tuned amplifier produce output for all frequency.......as a result of that the dc volatge at the envelope detector is fluctuating
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7th January 2009, 05:45 PM
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How did you build it and test it so quickly? Is it on a breadboard or PCB?
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7th January 2009, 05:49 PM
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doing this as project using this pdf u providied from the past 1 week.......all things r working in that ckt except tuned amlifier
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| Tags |
| protocol, x10 |
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