Final answer:
Devices like surge protectors, UPS, circuit breakers, fuses, GFCI, and isolation transformers are used to protect PCs from faulty AC, preventing electrical damage and reducing the risk of safety hazards.
Step-by-step explanation:
To protect a PC from faulty AC (alternating current), there are various devices that can be used, each serving different protective functions. A surge protector is commonly utilized to protect computers from voltage spikes, while an Uninterruptible Power Supply (UPS) can provide power during outages and prevent data loss. To filter out high-frequency noise that can damage a PC, a plug-in unit with a large inductance or capacitance can be used in series with the computer to filter out such frequencies. Circuit breakers and fuses help to interrupt excessive currents, thus preventing thermal hazards. The three-wire system, which includes live/hot, neutral, and ground wires, helps guard against thermal and shock hazards. In addition, a Ground Fault Circuit Interrupter (GFCI) can prevent shock by rapidly detecting the loss of current to unintended paths. For isolation and added protection, an isolation transformer can be used to insulate the device being powered from the original source.
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