Normal EM coil resistance range

EM coils run from about 2 ohms up to about 150 ohms. Exceptions exist: Williams' 1965 Mini Golf used a 21-475 coil of 1.8 ohms, and the Gottlieb A-5141 flipper power winding is about 1.7 ohms. Hold relays are usually 30 ohms or more so they can stay on without overheating.

Systems

• Electro-mechanical

Related tips

• Typical EM coil resistances
• 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 Two, Clay Harrell (pinrepair.com)