What is a snubber across a coil, and what effect does it have on the system?

Prepare for the OCC SACA Sensor Logic Systems 1 (C-205) Exam. Study with detailed questions and insightful explanations. Get ready for your certification!

Multiple Choice

What is a snubber across a coil, and what effect does it have on the system?

When current flows through a coil and you suddenly remove the supply, the inductor resists that change and can generate a large voltage spike—the inductive kick. A snubber across the coil provides a safe path or a controlled path for that energy as the current decays, using either a diode, or an RC network, or a small damping element. This clamps or slows the voltage rise, so the spike doesn’t reach a damaging level. The result is reduced EMI and less arcing at the contacts or switching devices, which protects the circuit and extends component life. The snubber doesn’t speed up energization or change the coil’s inductance; it mainly mitigates the harmful effects of the inductive kick when the coil is de-energized.

When current flows through a coil and you suddenly remove the supply, the inductor resists that change and can generate a large voltage spike—the inductive kick. A snubber across the coil provides a safe path or a controlled path for that energy as the current decays, using either a diode, or an RC network, or a small damping element. This clamps or slows the voltage rise, so the spike doesn’t reach a damaging level. The result is reduced EMI and less arcing at the contacts or switching devices, which protects the circuit and extends component life. The snubber doesn’t speed up energization or change the coil’s inductance; it mainly mitigates the harmful effects of the inductive kick when the coil is de-energized.

More practice questions