I'm trying to build a ceiling fan regulator which incorporates a triac. I was trying to figure out the current rating for this and I was hoping someone would let me know if this is the right way to do it. Here goes:
The ceiling fan is rated for 75W. For 220VAC and a power factor of about 0.85 (from my research on the web but feel free to correct me) would the current be:
75/(220 x 0.85) = 0.4 A?
If this is correct, can I use a 1A (constant on-state) rated triac?
The ceiling fan is rated for 75W. For 220VAC and a power factor of about 0.85 (from my research on the web but feel free to correct me) would the current be:
75/(220 x 0.85) = 0.4 A?
If this is correct, can I use a 1A (constant on-state) rated triac?