Par 11-271 Page 11-121 SECTION 20. ELECTRICAL AND ELECTRONIC SYMBOLS
11-271. GENERAL. The electrical and electronic symbols shown here are those that are likely to be encountered by the Aviation Maintenance Technician (AMT). They are in accordance with IEEE/ANSI 315-1975.
11-272. SYMBOLS. Only those symbols associated with aircraft electrical and electronic wiring have been listed in general. Refer to IEEE/ANSI 315-1975 for more specific detail on each symbol.
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Resistor Capacitor YVDE Anterna ЛГ Battery Thermal Element Thermomechanical Transducer Thermocouple Spark Gap Ignitor Cap Continuous Loop Fire Detector (Temperature Sensor) Ignitor Flug Par 11-272 Page 11-122
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning www + Transmission Patch Conductor Cable Winng F Distribution Lines Transmission Lines Alternative or Conditioned Wiring Associated or Future Par 11-272 Page 11-123
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Intentional Isclation of Direct-Current Path in Coaxial or Waveguide Applications Waveguide Strip-Type Transmission Line Temination + 0411 Circuit Return Fressure-Tight Bulkhead Cable Gland Cable Sealing End Switching Function
- > • 11L Electrical Contact Par 11-272 Page 11-124
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning 7706779 It to for fis fine Basic Contact Assemblies 177- Magnetic Blowout Coil Operating Coil Relay Coil J_
• Switch -.
ale ale Pushbutton, Momentary, or Spring- Retum Par 11-272 Page 11-125
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning ojo Two-Circuit, Maintained, or Not Spring- Return Nonlocking Switching, Momentary, or Spring-Retur Locking Switch Combiration Locking and Nonlocking Switch Key-Type Switch Lever Switch Par 11-272 Page 11-126
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning 8000 .... 29000 Selector or Multiposition Switch Safety Interlock a te Sensitive Switch Limit Switch 11100 Switches with Time-Delay Feature Flow-Actuated Switch Par 11-272 Page 11-127
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Liquid-Level Actuated Switch Pressure- or Vacuum-Actuated Switch Temperature-Actuated Switch Thermostat Flasher Self-Interrupting Switch Foot-Operated Switch Foot Switch Switch Operated by Shaft Rotation and Responsive to Speed or Direction Chai aIo Switches with Specific Features Par 11-272 Page 11-128
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Governor Speed Regulator
AC D DP MC
I P DB EP NB ) SO SA SW ) SR L ML FR · Relay Inertia Switch Mercur Switch Terminals Par 11-272 Page 11-129
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Cable Termination → Connector Disconnecting Device Connectors of the Type Commonly Used for Power-Supply Purposes Test Blocks Coaxial Connector Waveguide Flanges Waveguide Junction Par 11-272 Page 11-130
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Fuse Lightning Arrester Arrester Gap Circuit Breaker
- CC Protective Relay F S GP T =00 Audible-Signaling Device Microphone Par 11-272 Page 11-131
TABLE 11-29. ELECTRONIC/ELECTRICAL SYMBOLS (CONTINUED) Symbol Meaning Handset Operator's Set Lamp ₩ Visual-Signaling Device Mechanical Connection Mechanical Interlock Mechanical Motion ~ Clutch Brake Par 11-272 Page 11-132