MOC3020 is that part number Behrooz. You should be able to find it with a google search. We also use MOC3040 optocouplers here. They incorporate a zero-crossing circuit to reduce noise. The MOC3020 may also do this. REB Behrooz wrote: >Enki, please send your file moc3020.gif to "Files" section of Yahoo! >Group. No link is provided so I didn't receive it. > >Tnx, >Behrooz >--- In AVR-Chat@yahoogroups.com, "Enki" <enkitec@...> wrote: > > >> >> >>On 8 Jan 2008 at 14:14, Behrooz wrote: >> >> >> >>>I think you are right, even with no power on contactors (just >>> >>> >relays > > >>>are on) the same problem occures time to time. >>> >>>May you send me a schematic (or web link) on using optocouplers >>>along with TRIACs on AVR output pins? Am amazed with this >>> >>> >optocoupler > > >>>part. Seems interesting, and maybe a final solution?! >>> [Non-text portions of this message have been removed]
Message
Re: [AVR-Chat] Re: Dealing with 3-phase contactor sparks - Practical approach
2008-01-08 by Roy E. Burrage