Flipper voltage readings

Flippers run on the 50 V supply. With nothing pulling on it the supply reads about 60 V or more; under a working coil it drops to around 48 V. Pre-Fliptronics games enable the flippers through a relay on the driver board; Fliptronics games drive them from the Fliptronics board under CPU control.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• How Fliptronics flippers work
• How Fliptronic flipper drive works
• Flipper coils have two windings
• Fliptronic flipper test points
• Weak flipper on an electronic flipper game
• How a two-winding flipper coil works
• Testing the diodes on a flipper coil
• Type 1 and Type 2 flipper opto boards

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)