Typical EM coil resistances

Coils usually measure 2 to 120 ohms; under 2 ohms a coil is close to a dead short and will blow the fuse. Lower resistance means a stronger coil (pop bumpers are about 3 ohms). High-resistance coils are built to stay on, such as a Gottlieb ball release coil (before 1967) or a flipper's hold winding; most others burn if held on.

Systems

• Electro-mechanical

Related tips

• Normal EM coil resistance range
• Keep a list of known coil resistances
• Gottlieb EM coil windings, resistance and wrapper colour
• Coil stops by maker
• Coil sleeves and plungers to keep
• EM coil voltage by maker
• What makes a coil stronger or weaker
• Bally C0- coil numbers and their replacements

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part One, Clay Harrell (pinrepair.com)