08-12-2019, 03:11 PM
Perhaps surprising, but yes, it's done. Usually with a low value resistor in series with the cap. More here: https://en.wikipedia.org/wiki/Snubber
Often you can see a spark across switch or relay contacts when they open up - that certainly demonstrates the value of a snubber. You can buy caps with the resistor built in:: https://www.globalsources.com/gsol/I/Snu...971042.htm
The cap between live and neutral is intended to shunt interference between live and neutral, and might well be usefully doing that all the time the item runs. But the RC snubber is only about suppressing switching noise.
Often you can see a spark across switch or relay contacts when they open up - that certainly demonstrates the value of a snubber. You can buy caps with the resistor built in:: https://www.globalsources.com/gsol/I/Snu...971042.htm
The cap between live and neutral is intended to shunt interference between live and neutral, and might well be usefully doing that all the time the item runs. But the RC snubber is only about suppressing switching noise.
