Contents
What is the meaning of power supply?
: a device providing power to electronic equipment and sometimes designated A, B, or C according to its function of heating vacuum tube cathodes, causing a flow of electron current in plate circuits, or applying a direct voltage in grid circuits.
What is power supply voltage?
AC is also called mains electricity, household current, domestic power, line power, or wall power because it is the voltage supplied by a wall outlet. Worldwide, AC voltages range from 100 to 240 V. The rate of direction change is typically 50 to 60 times per second and is designated as Hertz (Hz).
What is power supply with example?
A system that converts AC current from the wall outlet into the DC currents required by electronic circuits. A computer power supply converts AC into multiple DC voltages. For example, 12 volts is commonly used for drives, while 3.3v and 5v are used by the chips and other motherboard components. See power adapter.
What should the output voltage of a power supply be?
As they would also in any other high current power supply. Output Voltage is a function of the transfomer supply and can be as high as about 35 volts for the LM317, or30 Volts for the LM350 or LM338. Although I don’t recommend it as Power Dissipation in the Regulators can becomes Quite Excessive.
How is a drop in power supply compensated for?
With external sensing, a drop in output voltage that would normally occur between the power supply and load is compensated by increasing the output voltage of the supply. As a result, there is often a specification for the maximum voltage that can be compensated for in order to prevent damage to the power supply due to an increased voltage.
What happens if a power supply exceeds its maximum rating?
If the output does not shut down, the supply will operate above its maximum current resulting in spec related issues or failure. In addition, more complex power supplies offer protection against current falling below the minimum rating while others will disable operation completely under these conditions.
When does a power supply need to be regulated?
A power supply converts the AC power into DC. During this conversion, the output may waver, occasionally requiring regulation. However, for general use, you may not need regulated power supplies. Most electronics require regulated power. When a power supply changes the voltage and type of power, the result is not always a steady output.