A device to determine when a High Power AC supply is crossing the zero point, so that it can be switched, or used for measuring.
What is it?
A High Quality Zero Cross Detector with the Digital side Optically Isolated to 5000V+ from the AC Side. Safety has been a design criteria for the board.
Why did you make it?
I needed a Z…
A High Quality Zero Cross Detector with the Digital side Optically Isolated to 5000V+ from the AC Side. Safety has been a design criteria for the board.
Why did you make it?
I needed a Zero Cross detector for my reflow oven so I can switch SSR's at a proper rate to control heating elements and fans.
What makes it special?
It's safe, if proper caution and care are used.
It can interface with any digital electronics from 1.8V to 5V.
It is small.
Highly accurate, mains zero crossing detection
Fully isolated with low voltage safe output
Ultra-low power consumption; worst case power dissipation < 120mW
Produces symmetrical pulses around zero crossings
Output pulse stays constant, independent of the mains voltage
Very low part count, no precision components required
All components are low voltage
Works over all voltage ranges (100VAC/240VAC), without modification
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