Series and parallel wound flipper coils on System 11
High Speed to Millionaire used the series wound FL23/600-30/2600: middle lug common, one diode across the outer lugs, no EOS capacitor, and a voltage spike that pits the EOS. From F-14 Tomcat on, the parallel wound FL11630 is used: an outer lug is common, two diodes are required, and a 2.2 uF 250 V capacitor across the EOS cuts arcing. The parallel coil does not overheat when a flipper is held up.
Systems
Related tips
- Series FL23/600-30/2600 vs parallel FL11630 flipper coils
- Replace a series wound flipper coil with the parallel FL11630 type
- Fitting a parallel FL11630 or FL11722 flipper coil
- Williams flipper coils from weakest to strongest
- Williams 50 V fat flipper coils ranked by strength
- Flipper coil numbers carry two windings
- WPC flipper coils, weakest to strongest
- WPC flipper coils from weakest to strongest
Source: Repairing Williams System 11 Pinball 1986 to 1990, Part Three, Clay Harrell