Workshop
We say that there is a surge when the nominal voltage of 220VAC, a certain percentage goes up and stays there for a certain period of time say that there are tensions Low Low voltage when the nominal value of 220 VAC, low a percentage and maintained at that value over a period of time peaks, transients and electrical noise or transient spikes appear in the power line for example when switched on or off electric motors. It appears as a very sudden surge of very high value during a tiny period of time. Electrical noise appears when connected to the line of computers, large motors or electrical equipment that have no filters whatsoever.
Micro cuts say that there is a micro cut when the value of the supply voltage is reduced to zero over a short time (less than 20 msec.) Power Outage A power outage when the rated voltage is reduced to zero over a significant period.
Line filters are recommended for filtering electrical problems such as spikes or transients and line noise. Also there to protect telephone lines, network cables, printers and serial ports.
Voltage regulators serve to attenuate the variations in line voltage. This means that for example if you receive an input voltage range of 190-250 Vac expect at his departure from 210-230 Vac UPS Systems UPS or UPS is used to generate the supply voltage of the PC (220 VAC 50 HZ) from a continuous battery. With this type of device, we can eliminate problems of micro cuts and cuts in electricity supply. UPS rates are: ¨ On – line ¨ In this case, the primary energy source keeps batteries, AC power, leaving the burden of maintaining them. When a power failure the UPS will continue to generate energy without interruption. Standby ¨ ¨ In this case the primary power source is AC power cut but when it happens, it starts up the battery-powered inverter. It is important to the design of the circuit court.
The multimeter allows us to make the necessary steps to control the installation, both in and DC voltage, and resistor. .- Analog multimeter is a tool based on analog components and generally requires an instrument of great value to achieve good accuracy measures. .- Digital multimeter is an instrument based on electronic components with digital presentation of the measure. Models are called “auto range” choosing the appropriate scale for better accuracy of measurement. Depending on the price can be more accurate than analog.
The power supply of a PC is the device that converts the value of line voltage (220 volts AC) in the appropriate values for the operation of electronic circuits that make up the computer.
(5, 12, -5 and -12 volts dc). In the line input provide protection against noise, voltage spikes and surges. The outputs provide protection against short circuit, open circuit, overvoltage and over-consumption (surge).
Model AT .- In this type of source, the ignition switch controls the entry of 220Vac. So when the key is operated completely disconnect the power. It has two connectors that go to the motherboard plate in which signals are distributed as discussed above. Unable to automatic programming on or off.
Model ATX ATX .- The sources generally have no ignition key, but once plugged into the power, turn on and remain lit until they are physically disconnected from the line. The “on” and “off” your computer is done through a switch that activates the rest of the team. This change causes an increase in consumption which causes it to move the fan and the computer is “light”. As is controlled by the motherboard, you can schedule your on and off. This source has a connector that contains all of the above signals over the signals needed to manage on. Note that the ATX power never goes out and where to perform maintenance inside the PC, you should disconnect the computer from AC power.
The main difference between a box AT or Baby AT and ATX, is its adaptation to incorporate the different formats of plates. Normally the Fund brings ATX slot about 16cm square x 4.5 cm at the rear where it installs a cover that contains the holes that connect the different devices (keyboard, mouse, video, modem, network, sound, etc. ) who brings the motherboard we wish to set.
The Power Supply is a mounting electrical / electronic stream capable of transforming the electricity network in a current PC can handle. This is accomplished through electronic processes, they are: