Definition
A field winding in a DC motor or generator that is connected in parallel (in shunt) with the armature, rather than in series with it. Because it is connected across the same voltage as the armature, the shunt winding is made of many turns of fine wire and carries a relatively small, steady current, producing a fairly constant magnetic field.
Plain English
A coil of wire inside a motor or generator that is wired alongside the main spinning part, not in line with it. It uses a small steady current to make a steady magnetic field.
Context Anchor
Seen in aircraft electrical system maintenance when describing direct-current motors, generators, and voltage control.
Derivation
‘Shunt’ comes from an old English word meaning to turn aside or divert. In electrical terms, a shunt is a parallel path that diverts part of the current. So a shunt winding is a winding placed on a side path, parallel to the armature.
Why Pilots Care
Shunt-wound machines give steady, predictable performance and are common in aircraft generators because their output stays relatively stable as the load changes. Knowing the winding type helps a technician troubleshoot voltage or speed problems correctly.
Intuition Check
Do not read shunt winding as a spare or extra winding. The key idea is how it is connected: across the circuit, not in a single line with it.
Example Sentence 1
The DC generator uses a shunt winding to maintain a steady magnetic field across a range of electrical loads.
Example Sentence 2
A weak shunt winding in the starter-generator can cause slow engine cranking on the ground.