"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]> > 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]. > 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. > -- *Arthur Marxer* Dipl. Informatik Ing. ETH *NetCat AG* Hub 26 9492 Eschen Liechtenstein Mobile: +41 78 803 68 87 Business: +423 232 73 37 [email protected] www.netcat.li -- 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.
