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Old 10th Oct 2018, 8:41 pm   #11
Ed_Dinning
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Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,173
Default Re: Miniature relay Suppressor

Hi Gents, a capacitor directly across the relay contacts is not a good idea on DC circuits and is problematical on AC. A resistor is series with the cap is a better idea.

If at the instant of contact closure the AC is at its peak value and the cap is fully charged, there is a great danger of the contacts welding due to contact bounce as they close.

Ed
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