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Old 10th August 2008, 02:02 PM   #1
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Default Patent input selector by Z audio

Hi all!
Finally I finished my inventation of a relay input selector.
There is no any "Pic controller" or logic circuits, but provide the same features as before mentioned.It cost 5 times less than a Pic controlled relay switch, but this is a free of digital data noise!!!.
It works very stable also very resistant to high power RF splatters and cell phones the same in switching and also in Audible noises.
This works like a Swiss watch so I am gonna Patent my schematic which I designed 1 month ago.
Best regards:
Zoran Mikeski
Kicevo-Macedonia.
here is some pics

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Old 10th August 2008, 02:42 PM   #2
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Neat, but I have to comment on the patent idea. A patent is an almost sure fire guarantee that the circuit will never be used by any commercial manufacturer. They will either run the other way, or just steal it and you'll never know. Further, though expensive, it's easy to get a patent. It's much harder to get a valid patent that will stand up to a court fight. You need to research prior art using resources you probably don't have available- years of obscure magazine articles, including house mags, and several engineering groups ($$) publications like IEEE. If someone hasn't been "in the business" for 15 years or so, or is associated with a company or group that has, attempting to patent an invention, particularly circuits, usually turns out to be a huge waste of money.
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Old 10th August 2008, 03:06 PM   #3
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All the concept is based on two big misconceptions and a deep lack of understanding about microcontroller operation. It has little practical application if any. This is the classic example of too much effort expent in the wrong direction.

1 - PICs (and similar chips from other brands) are fully static logic circuits. The clock may be stopped when the device is idle and it may be kept that way for as long as desired without data loss. They also include logic to resume operation on external events such as keypresses, IR remote activity, etc... And go back to sleep when processing is completed.

2 - If costs due to increased PCB size and manufacturing are considered, a discrete solution with many dozen parts can't in any way beat a single-chip all-in-one microcontroller.
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Old 10th August 2008, 04:37 PM   #4
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Conrad!
Thanks for information about IEEE!
Now I am with conversation with friend of mine who invent the flattest multimedia speaker in the world.
So I am not hurry for anything, just I am happiest prides man in the world with my work, everything is done here in my room electronic, metal work and of course the schematic which is still not on paper!!!,just in my head.
Thank's for reply, I really appreciate.
Best regards from my second hobby HAM world.
My callsign Z37HWX
73'S
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Old 10th August 2008, 04:52 PM   #5
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Otoh, merely having a patent in your "CV"/resume is a very good thing.

But you need to do a rather thorough patent search, especially if you are going for a Euro patent and/or a US patent, plus a very very thorough search and review of the "prior art" including commercial applications from other fields, like telephony and other control based fields!

_-_-bear
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Old 10th August 2008, 05:59 PM   #6
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Thank you too friend for your suggestion!
Everything I know till now is that schematic came out of my brain and the most important is working like a swiss watch.
If something is less for this project is that this schematic can not remember the last switched input which was selected before turning off, but for me that is not problem to push a button when i am turning on this device.
Everything else is working fully logical ,so it is not possible to switch on 2 or more inputs at the same time.
I used Nais 5v signal relays but can be changed with anyone better.
Here is no any clock so there is no need to care about digital noises in audio.
I am a radioamateur also and I have here Yaesu ft 101e with tubes in the PA so I made a little RF test and tight together with the RIG and the both mains connected in the same mains connector(line voltage)
And this work stable like stone, than I put my cell phone inside in the open box of my input selector and called to transmit( the cell phone was touched with the pcb, and nothing of unstability saw, and nothing heard on my speakers, my amp was turn on, and volume control to the maximum( 2X 500 watts) @ 4 ohm.
By the way this is my probe pcb and it is very easy to make the pcb board I would say 3 times, Or to be the same as the place needed for the relays or the input RCA connectors.
Another way is to build this schematic in SMD technikc but that is no sense because We are limited by the place needed for RCA and relays...
IT is very easy to upgrade the inputs on my schematic, it uses only 3 active elements per each input!!!!!!!!!!!!!!!!!
Wonderful thing
Thank you it is my pleasure to talk about audio and only audio.
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Old 10th August 2008, 08:31 PM   #7
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Dear MrBear Labs!
UI read your history and I found that you are also radioamateur like me.
Are you still active on the air, perhaps we can make a good QSO< I work telegraphy(one of the best and fastest operators from Z3, and also SSB.
I am QRV mostly on 14 MHZ which is my favorite with 100Watts and TH6dxx 6 element Yagi from High GAIN, called "Thunderbird"
And what is your callsign?
MY callsign is Z37HWX.
I hope we can chat more about Audio?
GL and 73 from Macedonia.
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Old 10th August 2008, 09:39 PM   #8
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Default Hi!

Nice work, but where is schematic?

Regards zeoN_Rider
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Old 10th August 2008, 09:50 PM   #9
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Default Re: Hi!

Quote:
Originally posted by zeonrider
Nice work, but where is schematic?

Regards zeoN_Rider



And strangely, no thanks to Eva.
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Old 10th August 2008, 11:03 PM   #10
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Dear friends!
Thanks to all!
I am not selfish about schematic which is now here in my head!
I made this PCB not from the paper but just I made placing to all components using Corel draw software and than with photo procedure!
Again this is just my first PCB to make a test how it is works. and did'nt care too much about the final dimension, I like old school and more spaces between components which is all placed horizontally.
It is possible to achieve very small PCB and of course no any wires like it is done on my first attempt, so all momentary switches and led diodes for indications of the switched input from the front aluminium panel is connected via wires so this may not looks pretty nice but works!.
So I will made in the future another PCB design and will use maybe a flat cable with connector for momentary switch buttons and also led indication.
Also will try to find this discrete components in SMD and dimension will be I guess no more that Input RCA connectors fixed about the standard spacing about 15 mm between each.
I would like to show how this works by a video clip.
So you can achieve inputs how you like, in my present case I made 5 inputs, So it is very easily to add more inputs, which will pull another three active components and relay.
Please be patient about this schematic and I will post it here, but first I would like to ensure if this is done before me, so now I am with conversation with some friend from Skopje who invent a new design of multimedia speaker with only +_db tolerance of frequency responce , because all other speaker even monitors when you placed on a PC desk will provide a very deep drop of about 7 db's and I think a peak somewhere in a middle range frequency due to the reflection from the PC desk.
Please be patient, and I am not from that selfish guy's, you'll see, I live for the Audio since my earliest days.
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