| Electronics > Projects, Designs, and Technical Stuff |
| ESP8266 with relays |
| << < (3/5) > >> |
| picandmix:
Hi, To give a better answer can you say what type of load is being used and the approximate current. A pure resistive load like a heater will generally give less interference, while a more inductive load like a fan or solenoid can cause all sorts of issues, regardless of the relay being on a "separate" 12v supply line. ( I speak from experience on my own projects) If you stay with a mechanical relay then google "relay contact suppression" which will show what kind of components are best suited to reducing interference. Any such parts should be Class X or Y rated for mains voltages https://www.allaboutcircuits.com/technical-articles/safety-capacitor-class-x-and-class-y-capacitors/ |
| Finder:
--- Quote from: Gabriel on December 26, 2018, 09:44:23 am ---It will be switching mains voltage. --- End quote --- You need to increase the isolation between circuit ground and mains. Or even put some slots. |
| CCB:
Mounting holes? |
| Gabriel:
--- Quote from: CCB on December 26, 2018, 10:26:57 am ---Mounting holes? --- End quote --- Done :) --- Quote from: Finder on December 26, 2018, 10:22:44 am --- --- Quote from: Gabriel on December 26, 2018, 09:44:23 am ---It will be switching mains voltage. --- End quote --- You need to increase the isolation between circuit ground and mains. Or even put some slots. --- End quote --- How much isolation do I need (or should I have)? Is 0.5mm enough? |
| Gabriel:
Ok version 3, (hopefully the final version)! Thanks so much guys for taking the time to help a noob :) I have added some mounting holes and I have increased the clearance for the mains traces. Once again is there anything else (hope not), Gabriel |
| Navigation |
| Message Index |
| Next page |
| Previous page |