(Topic ID: 292581)

Capacitor compatibility?

By petebest

2 years ago



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  • 7 posts
  • 6 Pinsiders participating
  • Latest reply 2 years ago by petebest
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#1 2 years ago

Hi-

On my Williams Fantastic, the ball spinner sometimes spins and never stops. It’s usually fine with the game is first turned on. But after a couple rounds the spinner just keeps going. I think I think if I the problem as the electronic delay timer has a capacitor that is not testing as it should

The manual calls for a capacitor with values of 50MFD-50 V.

I don’t have any of those at the moment.

The closest I can find in my stash is a
47UF - 100 V.

I know I’m OK to use one with a higher volts value, but I don’t know about the 47 UF versus 50 MFD compatibility

Am I OK to use this 47 UF in place of one that calls for a 50 MFD?
Thx
Pete

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#2 2 years ago

G-P-E Ed?

#3 2 years ago

I believe that MFD (Micro Farad) is the same as uF, and that uF is really µF (also micro Farad). So the units are the same.

As for the 47 vs 50, most common capacitors are only guaranteed to be about +/- 10% (or maybe 20%?) of the printed value anyway. So the original 50 MFD capacitor might be anywhere from 40-60 MFD. There might be a tiny difference in the delay with the replacement but I'd be surprised if it mattered.

/Mark

#4 2 years ago

47 is the new common value for the older 50. Higher voltage is fine.

#5 2 years ago

50 uf is an old standard value. It is superceeded by 47 uf in today's lingo.

#6 2 years ago

What style cap was the old 50uF one? Can you post a photo? Was it also polarized? If a cap is polarized you need to hook it up in the right spot or you’ll pop it

#7 2 years ago
Quoted from Peruman:

What style cap was the old 50uF one? Can you post a photo? Was it also polarized? If a cap is polarized you need to hook it up in the right spot or you’ll pop it

Yes - it was polarized. I installed the replacement properly. However - I’ve since realized it’s the transistor that’s bad. Had to order some.

Thx!

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