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  • Chapter 4: Engine Ignition & Electrical Systems › High-Tension Magneto System Theory of Operation › Primary Electrical Circuit

    The high-voltage in the secondary winding discharges across the gap in…

  • Chapter 4: Engine Ignition & Electrical Systems › High-Tension Magneto System Theory of Operation › Secondary Electrical Circuit

    This high-voltage is used to jump the air gap of electrodes…

  • Chapter 4: Engine Ignition & Electrical Systems › Removal, Maintenance, & Installation of Ignition System Components › Igniter Plugs

    Igniter Plugs 1. Disconnect ignition leads from igniter plugs. A good procedure to perform before disconnecting the ignition lead is to disconnect the low-voltage primary lead from the ignition exciter unit and wait at least one minute to permit ... stored energy to dissipate before disconnecting the high-voltage cable from the igniter. Figure 4-78. Flashover inspection. 2. Remove igniter plugs from mounts. 3. Inspect igniter plug gap surface material. Before inspection, remove residue from the shell exterior using…

  • Chapter 4: Engine Ignition & Electrical Systems › Turbine Engine Ignition Systems › Igniter Plugs

    Igniter Plugs The igniter plug of a turbine engine ignition system differs considerably from the spark plug of a reciprocating engine ignition system. [Figure 4-75] Its electrode must be capable of withstanding a current of much higher energy than ... electrode of a conventional spark plug. This high energy current can quickly cause electrode erosion, but the short periods of operation minimize this aspect of igniter maintenance. The electrode gap of the typical igniter plug is designed much larger than…