Well it's half on topic....horn switch contacts in a 24V vehicle.
The contacts seem to have lost whatever protective plating they had. If I clean them up they work well for a week or so and then oxidise up and become intermittent.
Any suggestions on some sort of protective gel I can apply. I've the usual contact cleaners etc but nothing for protecting contacts switching a reasonably large current.
thanks.
If you are concerened about them arcing, (which is then pitting, burning and damaging the contacts) try a 1-2UF poly capacitor across the contacts.
IF they are switching a logic circuit, or something that draws virtually no current (not enough to "burn" through any crap that accumulates), you could try adding a 1k resistor across the load. (ie
- if the contacts switch the load to earth, then add the resistor between the contact that doesn't go to earth, and 24v supply.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.