zero crossing detector circuit - IC
zero crossing detector circuit - IC
(OP)
I have two three zero crossing detector circuits for my triac light dimmer. With only a small PCB footprint I don't enough room for the FW rectifier diode bridge, optocoupler resistors. Is there a IC available that's optically isolated that I could AC line voltage directly (115VAC) and the chip detects the zero crossing, hence switching the opto on and off?





RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC
During the zero crossing period, the optocoupler shuts off momentarilly. In our application we counter this by placing a capacitor on the transistor output (5V logic side), which is the opposite of application of finding the zero crossings. Of course wether or not this will work for you depends on wether or not the time resolution provided by the opto shutoff is sufficient for your needs.
RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC
RE: zero crossing detector circuit - IC