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Electronics and Circuits

Electronic Roulette of New Electronic Magazine

joseph fuentes
hace 6 años
hace 6 años
Good morning to everyone, I have a magazine called New Electronics year II No 10 March 1984, the article refers to an electronic roulette to LEDs, The pages are from 22 to 32. Well what happens is that it seems that the diagram have some error. I say this because I put it together and it doesn't work, I tried several times but without any result. If by chance someone in this forum could help me I would really appreciate it. Until you have good luck.
Carlos Quiroga
hace 6 años

Hello, for that we should see the diagram.

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joseph fuentes
hace 6 años

Good evening friend Carlos, for your information I will send you 4 photos of the circuit, the list of components and the diagram.
I put this project together on a protoboard, and it didn't work, I thank you very much if you can help me. Good luck.

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joseph fuentes
hace 6 años

Good afternoon friend Carlos, I have not been able to send you the photos that I offered, I do not know what happens that they do not load I do not know if the page or the internet is the problem, I will keep trying. Good luck.

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JOSE MIGUEL SIRGO PASCUAL
hace 6 años
hace 6 años
I have that magazine in Italian version and I can tell you that there is no typo in the circuitry. Most likely, some of the integrated circuits that I use are bad or that if I do not use the PBC board supplied by the magazine and the manufacturer at home, this track is cut off. Tell me if I put it on the original plate. I provide the address to download the free PDF magazine in Italian. Roulette is on page 420 onwards. http://www.rsp-italy.it/Electronics/Magazines/Nuova%20Elettronica/_contents/Nuova%20Elettronica%20098.pdf
JOSE MIGUEL SIRGO PASCUAL
hace 6 años

The first thing you have to verify is that on leg 24 of IC SN74154 you have 4.5volts of power and that legs 11-18 and 19 are grounded.
This integrated is responsible for lighting the LEDs and even if all the rest of the circuitry was bad, you would have to light a led by force.
The LED that would light would correspond to the 4-digit binary numbering of the input of the integrated SN74154, even if the four inputs corresponding to pins 20-21-22-y 23 are zero.

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joseph fuentes
hace 6 años

Good evening friend Jose Miguel, very grateful for your information but there is a detail are not the same diagram or list of materials.
I will send you 4 photos, 1 of the diagram, 1 of the list and 2 electrical circuit. Good luck.

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joseph fuentes
hace 6 años

Good afternoon friend Jose, I have not been able to send the photos that I offered, since they do not load I do not know if it is the page or the Internet I will keep trying. Good luck.

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JOSE MIGUEL SIRGO PASCUAL
hace 6 años

If you see that you cannot open a new query. Perhaps what happens is that qualifying as solved is the reason for not being able to upload them.

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joseph fuentes
hace 6 años

Good morning friend Jose, I had to open a question again to be able to send the photos. Thank you.

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joseph fuentes
hace 6 años
hace 6 años
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