@Nishant Sorry for this misunderstanding, I don't want to mistrust your know how. I think, we both know how this circuit works. Your sentence "cut the phase at zero crossing" might be misleading for some people who read this. I would say "you need to cut the phase after zero crossing" and the time between zero crossing and the cut determines the power. The longer I wait, the lesser the power.
Am Donnerstag, 9. Januar 2014 13:09:52 UTC+1 schrieb n: > > What Not correct ? All I meant is well the whole purpose of ascertaining > the zero crossing is to know when to cut the phase. That's it. > Its different that you need to wait a bit to generate the desired dimming. > I do that a lot of time with my andRHOME device. > > About the amperage > > Thanks & Regards, > Nishant > ------------------- > Sent from My Android (humongous NOTE-II) > On 9 Jan 2014 17:31, "Arthur Marxer" <[email protected] <javascript:>> > wrote: > >> "cut the phase at zero crossing" is not quiet correct. I have to detect >> the zero crossing, then wait for a certain amount of time and then execute >> the trigger pulse. The triac will close the circuit and the "rest" of the >> wave will flow through the bulb. The triac will open the circuit again at >> the next zero crossing. The amount of "wait time" determines the lightness. >> >> Triacs are made for this purpose and 4 amps is not a lot for a triac >> (e.g. the BT137 supports 8 amps). I also plan not to use one single >> "channel" but 10 channels or more. >> >> >> 2014/1/9 n <[email protected] <javascript:>> >> >>> Arthur, >>> >>> For dimming ac you need to cut the phase at zero crossing For that you >>> need to use a opto driver like the 4n35 to ascertain the ac voltage wave >>> and then drive the triacs through opto triac drivers. >>> The coding is very easy if one understands the concept basics. >>> >>> For dimming 1000watts it would be a whole lot of amperage 1000/230vac >>> gives you A bit less than 4 amps >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "ioio-users" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/ioio-users/s_NY9im_SVY/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected] <javascript:>. >>> To post to this group, send email to [email protected]<javascript:> >>> . >>> Visit this group at http://groups.google.com/group/ioio-users. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "ioio-users" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/ioio-users/s_NY9im_SVY/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> To post to this group, send email to [email protected]<javascript:> >> . >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/groups/opt_out. >> > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/groups/opt_out.
