suulakepuristamalla
Suulakepuristamalla, literally "shorting the coil" in Finnish, refers to a technique in which an electric coil (inductor) is intentionally short‑circuited by placing a very low‑resistance path across its terminals. The abrupt interruption of current flow causes the magnetic field stored in the inductor to collapse quickly. According to Faraday’s law, a changing magnetic flux induces a voltage across the coil that can be many times larger than the supply voltage. The resulting high‑voltage, high‑frequency pulse is used to generate sparks, drive high‑speed relays, or shape short bursts in pulse‑power experiments.
The theoretical basis is the energy stored in the magnetic field, W = ½ LI², where L is
Typical applications include spark gap initiation in high‑voltage test rigs, demonstrating electromagnetic induction in educational labs,
Safety considerations are paramount. The high‑voltage spikes can pose shock hazards, and the sudden release of