What hazard exists in a power supply immediately after turning it off?

What hazard exists in a power supply immediately after turning it off?

• A. Smoke from burnt components
• B. Charge stored in filter capacitors
• C. Increased voltage output
• D. Resistance overheating

Answer: (B)

After a power supply is turned off, one of the primary hazards that still exists is the charge stored in the filter capacitors. These capacitors can hold a significant amount of electrical energy, and if they are not properly discharged before working on or near the power supply, they can pose a risk of electric shock. Filter capacitors are designed to smooth out fluctuations in voltage and maintain stable electrical output. Even after disconnection from the power source, they can retain enough charge to cause injury if touched. To safely work on a power supply, it is essential to allow sufficient time for the capacitors to discharge or to use appropriate techniques to discharge them properly before handling any components. This understanding of stored energy in capacitors is a critical safety consideration in electronics repair and maintenance.

After a power supply is turned off, one of the primary hazards that still exists is the charge stored in the filter capacitors. These capacitors can hold a significant amount of electrical energy, and if they are not properly discharged before working on or near the power supply, they can pose a risk of electric shock.

Filter capacitors are designed to smooth out fluctuations in voltage and maintain stable electrical output. Even after disconnection from the power source, they can retain enough charge to cause injury if touched. To safely work on a power supply, it is essential to allow sufficient time for the capacitors to discharge or to use appropriate techniques to discharge them properly before handling any components. This understanding of stored energy in capacitors is a critical safety consideration in electronics repair and maintenance.