What causes Flasher and coil power to fade from On>Off after interlock opened?

[Monkeyboypaul]

Does anyone know why, when testing Flashers and Coils on a WPC game, they seem to keep firing AFTER you release/open the door interlock switches?

I thought that cut power to them, which it does... eventually. Just it seems to take a little while for it to stop - kind of fades away slowly.

I've seen this with WPC Power Driver Boards using original & brand new BR & Caps.

WTF is going on??

 

[stoptap]

Caps discharging. It's actually symptomatic of poor circuit design. Any kill switch should be instantaneous.

 

[Monkeyboypaul]

Caps discharging. It's actually symptomatic of poor circuit design. Any kill switch should be instantaneous.

Ok, thanks. So newer caps may exacerbate this problem?

 

[stoptap]

Ok, thanks. So newer caps may exacerbate this problem?

Possibly because they may well be doing a better job of holding their charge.