Black Knight
Williams, 1980
Dragon
Gottlieb, 1978
Grand Lizard
Williams, 1986
Space Mission
Williams, 1976
Stars
Stern Electronics, 1978You're currently viewing posts by Pinsider barakandl.
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In a pinch to get a game working I have put a low ohm power resistor in series with a stronger coil. BSD kickout to left inlane. Worked fine and have left it that way for a few years now.
I had to tinker with the value to get it the strength i wanted. I think i ended up with a few 3w of equal value resistors in parallel.
Resistor clump is about 4.8 ohm and the coil resistance is 4 ohm for total resistance of 8.8 ohm.
No evidence the resistors have been overheated.
I actually did buy the right coil just never got around to proper fix since it works fine.
20200403_211206 (resized).jpg
Stern Meteor and Stern Seawitch had a power resistor in series with a flipper coil. Probably because an upper flipper so close to drop targets they where getting busted. I can't remember the value Stern used, but it might be included in a wiring diagram.
Quoted from System-J:Those are in parallel aren't they? If that's the case the calculations seem quite a bit more complicated (but if it works, it works, right?). I wonder if in parallel (again, if these are in), if the wattage load is dissipated more than it in series.
https://www.dummies.com/programming/electronics/components/electronics-components-combine-resistors-in-series-and-parallel/
I did an experiment with shimming the plungers (thanks for the lead DNO) It definitely made a difference, but not enough to remove the towel for my liking unfortunately. I took some amateur db measurements and I'll post it later.
There are multiple resistors of equal value (looks like each resistor is a 27R 3w) parallel to each other. But the resistor clump is in series with the coil.
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Westjordan, UT