Phase control by avr
- Could any one help me to control the Phase of 50Hz AC line
I mean, like a phase control by DIAC and TRIAC ckt, where RC time
constant is used for control the time of TRIAC gate trigger.
I've some idea:
Every half cycle takes 20ms at 50Hz, so we have to control the power
in this time, if i trigger the Triac after 5ms from starting the half
then i can control some power. and if trigger after 10ms then we will
control 50% power.
My problem is how can i trigger the TRIAC after 5,10,15(ms) of
starting the half cycle and how can i determine the time of passing
the 0v level of the line sine wave.
Please help me if you can!!!