Tuesday, April 27, 2010

Battery Indicator

Battery indicator is a tool is not serving as a flow battery charger that has been discharged, but rather served as a giver of knowledge that the current battery is running out!. So clearly similar to a mini electric alarm. Power capacity can work at voltages ranging from value of 3 volts DC to 15 volts DC. For the schematic and the material used was very few and easy to be paired on the radio or the lights flash for photos, consider the schematic below clearly;

Battery IndicatorThis appliance is once again not to use the current battery charge longer, so the same name but its function is not the same as the battery indicator is called battery charger! Click Here!

electrical appliance or electronic equipment

If we are dealing with an electrical appliance or a plane, then we often wondered whether the equipment or the aircraft is an electrical appliance or electronic equipment?
To distinguish between those mentioned above earlier, commonly used electrical terms if he is used to run electric motors, generators can make work, lit a lamp, generates heat, making the electric bell rang and made an electric magnet works, and others. But the term is usually used when a elektonika electricity used for the purposes of: aircraft radio transmitter, radio receiver, transmitting television, television receiver, digital clock, digital volt meter, digital phone, osciloscope, radar, frequency counters, vacuum tube volt meter , video tapes, walky talky, radio citizan band, computer, calculator, tranceiver, teleprinter and other tools that use electron tubes, using transistors, using semiconductor diodes, using IC (Integrated Circuit).
It is an electric power energy such as light, heat, chemical and energy of motion. As for the names of the electrical energy can be converted into light energy is electric light, electrical energy can be converted into heat energy is electric irons, electric energy is converted into chemical energy and electrical energy accumulator that can be converted into energy of motion is a magnet and another another. Click Here!

Monday, April 26, 2010

Rectification

RectificationThe essntial item in the Rectification process is the diode.
The word 'diode' is made up from di (=two) + electrode, and it is therefore a device which has two electrodes or terminals. These terminals are called anode and cathode respectively. Identification of the cathode is by means of marking the appropriate end the body of the component, usually with a band.
The diode is a one-way device, that is, it will conduct, or allow current to flow, in one direction only, when its anode is positive with respect to cathode. The direction in which this current flows is called the forward direction.
When the anode is negative with respect to the cathode, no current should flow.
This is called the reverse direction.
The diode can regarded as a switch, current able to flow only when the switch is on. Click Here!

DC power supply

Although the use of thermionic valves may be making a comeback in some quarters, the great attraction of transistors and integrated circuits in, for example, personal stereos and other low-output power equipment, is the 'carry everywhere' aspect, which is in no small measure due to the low-voltage, low-power supply that the equipment requires.
As most users will know, this power supply can easily be provided by batteries, with the cost aspect connsidered by the use of rechargeable batteries. The wisdom of using a mains adaptor to reduce running costs to a minimum is advocated, although of course, portability is reduced.
For higher output powers, as offered by domestic high fidelity equipment, the use of batteries is not an economic proposition.

A DC (direct current ) power supply is an item of equipment which provides a unidirectional (in one direction only) voltge which ideally should be constant.

DC power supply necessary is electronic equipment requiers an operating supply voltge which is of type described above. this voltage could range in value from a few hundred volts in the days of thermionic valves, to between three and, say 50 volts for modern-day with batteries.

The function of DC power supply is to provvide a constant ( or near constant) voltage while delivering a possible wide range of currents to the equipment. The actual current demand can sometimes depend uponthe operating state of equipment-for example, with an audio amplifier, the actual volume level.
It can be mentioned here that there are cetain applications which require a constant current supply as opposed to constant voltage.

This DC power supply achieved is from the AC (alternating current) mains, through a conversion process known as rectification

The AC input voltage is shown as alternating above and below zero, that is, going alternately positive and negative, at a rate ( frequency) of 50 times a second (50 hertz).
The DC output voltage is shown as a positive value, but it could, if necessary, be negative

DC power supply The AC input voltage is shown as alternating above and below zero, that is, going alternately positive and negative, at a rate ( frequency) of 50 times a second (50 hertz).
The DC output voltage is shown as a positive value, but it could, if necessary, be negative. Click Here!