Are there Any off the shelf zero crossing detectors to use with brx

[AustinT]

Hi ,
Does anybody know of any off the shelf zero crossing transducers with adjustable hysteresis that I could use with the fast inputs of the brx? I want to calculate the frequency and phase angle of some 120 v ac sources
Thanks
 

[ATU]

This is about as close your will get at off the shelf.
https://www.tindie.com/products/greencardigan/zero-cross-detector-for-tc4-shield/
It gives you a 1ms pulse centered around the zero cross and works from 110-240VAC

There is a guy in Australia that makes it. If its not in stock, contact him through tindie.  He can build up as many as you need. Its a 5V device, so you won't be able to drive it directly to a BRX.

You  will need a transistor or SSR to drive the input.
I used this
https://www.newark.com/weidmuller/8937920000/solid-state-relay-0-1a-5vdc-din/dp/83R7396?st=TTL%20Solid%20State%20Relay
to make it more industrial.

I mounted the board on a prototype board and then put it inside a DIN enclosure to mount on a din rail.

It works very well.

[AustinT]

Thank you