Contents
How important is power supply to electronic appliances?
The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power.
How is the supply voltage changed to feed an electronic device?
A power supply takes the AC from the wall outlet, converts it to unregulated DC, and reduces the voltage using an input power transformer, typically stepping it down to the voltage required by the load. For safety reasons, the transformer also separates the output power supply from the mains input.
What would happen if one of the appliances failed to function?
Faulty appliances can sometimes send much larger surges. When this happens, microprocessor-based electronics can receive permanent damage in an instant. They may also experience cumulative damage over time from smaller surges, which can reduce device lifespan.
Why do appliances burn out?
A burnout, in electrical terms, is a drop in voltage across an electricity supply system. It can be spontaneous (unintentional) caused by disturbances in the grid, or intentionally caused during emergencies when the load needs to be reduced in order to prevent blackouts.
Why are electrical devices more dangerous than electronic devices?
The electrical devices mainly work on the high alternating current. The power consumption of the electrical devices is also very high. The electrical devices are more dangerous and less reliable because it causes the hazardous electrical shock. The size of the electrical devices is very large, and hence it requires more space.
What’s the difference between electrical and electronic engineering?
The most dominant difference between both is, electrical devices convert electrical energy into another form of energy like heat, light, sound, etc. An electronic device performs control/switching operation of electrical energy for the particular task.
What do you need to know about electrical equipment?
Check that the electrical equipment is in good condition. The HSE booklet ‘Maintaining portable and transportable electrical equipment’ will help you do this. Check that the equipment is suitable for the electrical supply with which it is going to be used, and the electrical supply is safe.
When to question the safety of an electrical supply?
If any doubt remains regarding the safety of the electrical supply, a competent person should be consulted.