zero crossing detector

khatib

Member
When can i use the zero crossing detector in my UPS ?

is it to :
1- to detect the ac interrupt .
2- when the AC return .
i use u controller (PIC).

thanks for all .
 
A zero crossing detector is normally used to detect zero crossing of AC to synchronize triac firing with mains frequency of phase controlled units, such as dimmers and rpm regulator circuits for motors.

Boncuk
 
Yes. To prevent unwanted phase shift when swich mode.
 
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