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Hello again!... Just to let you know that o solve my problem, not with a RC Snubber but instead with a software fix. Restart the LCD more often did the trick.
Thank all of you for your help.
Ok, I have some more info on the coil. It's the LXD1P7 coil for contactor. It's supposed to draw 500mA at 230V. I estimate I need a 55W resistor...? Is that right? Thank you!
PS: 220 Ohm resistor
Thanks bigdogguru!
On my research I already saw all that links. But I never put a RC Snubber on any coil. And if someone on the forum already do that it would be much faster and easier for me. I think I have the values right, but the power for the resistor is the missing info. I have no idea...
Hello all!
I have done a control circuit that needs to operate two contactors (with 240v ac coil). I'm experiencing interference on the circuit, the LCD goes mad when installed. And after some research I found that maybe, using an RC Snubber circuit on each coil would resolve the problem...
Once again, thank you all for the help given me.
The problem turns out to be very easy to solve... I removed the board from the box, and I touched the little crystal and it imiadtly came off... The vibration damaged the legs on it. Soo I replaced it and soldered the case to the ground plane...
Hello! Thank you for all the replys.. I think my new top quality ds1307 part is coming tomorrow... But I notice one problem on my board, the crystal metal can is not grounded. And I have no caps on the crystal, I thought that the ds1307 have them built in!? Thanks!
More info: in my application...
Hey there... I have the same issue, I have a board with a DS1307 that I have replaced two times now (only lasted two months)! I don't know what's happening. I have cheep Chinese DS1307 devices... I ordered a new one today, 10x more expensive. But I'm not shure if that's the problem because I...
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