Magnetic Pickups

MP3298, MP 7905 & MP7906

A magnetic pickup is an AC generator. It is normally installed into the flywheel housing of an internal combustion engine, so that the starter ring gear acts upon it to generate a voltage pulse each time a gear tooth passes the end of the sensor.

Available mag pickup models:

  • MP3298
  • MP7905
  • MP7906

FW Murphy Production Controls offers support for all our products. If you are unable to find the product that you need, please call us at 918-957-1000.

  • Overview
  • Specifications
  • Diagrams
  • Literature


Pickup Model Part Number Total Length
MP3298 20700162 3 in. (76 mm)
MP7906 20700161 3 in. (76 mm)
MP7905 20700160 4-1/2 in. (114 mm)
  • Housing Material:
    • MP3298: Type 300 stainless steel
      • Locknut: Type 300 stainless steel
    • MP7905 and MP7906: Type 6061 aluminum/anodized Class 1
      • Locknut: Steel nickel plated
  • Output Leads (all models): Two insulated leads, 20AWG, STR/TEF insulated per MIL-W-16878D Type E, 1 white and 1 black
  • Output Voltage (all models): 200 V.P.P. TYP. (tested at 1000 I.P.S. 20 pitch gear, 0.005 gap., and 100K ohmM load)
  • Coil Resistance:
    • MP3298: 975 ohms TYP
    • MP7905 and MP7906: 2500 ohms TYP
  • Potting (all models): Internal portion of pickup is filled with epoxy resin, making the magnetic pickup oil and moist resistant
  • Temperature (all models): -65° to +225° F (-54 ° to 107° C)
  • Coil Induct.:
    • MP3298: 800 mH max, @ 1K Hz
    • MP3298: 400 mH TYP. @ 1K Hz

Dimensions Magnetic Pickup

Polarity: White lead is positive with respect to Black lead upon approach of ferrous metal.


Typical Installation Diagram

For more information about this product, you can download the related literature here:

Installation Instructions (00-02-0181; revised 12/2019)