Object
Terullian Diode Bypass Transformer
A compact Sontaran technology component salvaged from the compromised spaceship by Harry. Its internal terullian diodes show signs of sabotage through frayed wiring and erratic energy fluctuations. The Doctor uses it to trigger the ship's self-destruct sequence, overriding Styre's attempts to flee. The component's activation strains under the overload, causing both it and Styre's body to collapse in short, violent succession.
2 appearances
Purpose
To bypass the spaceship's security systems and force an emergency shutdown sequence.
Significance
The critical element that turns Harry's salvaged tech into the instrument of Sontaran defeat. Its sabotage by Harry creates the window for the Doctor's final gambit against Styre.
Appearances in the Narrative
When this object appears and how it's used