Power supply with some fixed and some detachable cables.

Transient-voltage-suppression diode protecting circuits from voltage spikes.

Fuse-like component that recovers after an overcurrent condition.

Power supply with permanently attached cables.

Light-emitting diode.

Resettable device interrupting excessive electrical current.

Cooling fan inside a power supply.

Semiconductor device converting light into electrical current.

Voltage-dependent resistor used for surge protection.

Ratio of output power to input power.