ELECTRONICS
Parallel Headlight Filaments
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CASE ANALYSIS
Scenario
A 12 V automotive battery supplies two 6 ohm headlight filaments connected in parallel after a common fuse and switch, sharing the battery ground.
Key decisions
- Model the battery as B1 with positive rail batt_pos and ground 0
- Wire both headlight filament resistors to the same switched node so they are in parallel
- Use a common fuse and SPST switch to represent the headlight circuit control
When to reuse this
Use for beginner DC parallel circuit analysis, automotive lighting schematics, or demonstrating equal voltage across parallel branches.
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