Re: Wiring for DCC Update Announcemen

Don Vollrath

What Allan said is correct. Adding a capacitor across the switch may also further degrade the lifetime as the charged capacitor becomes short circuited when the switch closes. 

A capacitor across switch or relay contact is intended to act like a snubber to reduce sparking in circuits where the load is highly inductive, like a relay or magnet coil in DC circuits. 

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