| How you test components ..BY MR.RASHID | |
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:24 pm | |
| How you test components first we check Diode Diode First we will discus passive components, Diode A diode is a two-terminal device Diodes have two active electrodes between which the signal of interest may flow, and most are used for their unidirectional current property. Marked side of electrode is call cathode, and other is called anode Remember , here we discuss only Mobile using parts , if any one want more detail then mail me , we are talking about diode, The directionality of current flow most diodes exhibit is sometimes generically called the rectifying property. The most common function of a diode is to allow an electric current to pass in one direction (called the forward biased condition) and to block it in the opposite direction (the reverse biased condition). Kind of diodes 1 – Rectifier 2 - LED (light emitting diode)( key pad or LCD) 3 - Photo diode (blue tooth receiver) 4 - Zener diode (use in charging section) 5 - Switching diodes There are various types of diode; those are not use in mobile How can test it by analog meter Set mete at continuity 1X OHM range You perform only two step, put red prod at marked electrode and black at anode, meter will show some reading, now change prods of meter mean vice versa The needle of your meter will not move, its mean you diode is absolutely in good condition, in other case your diode dead or short Check pic for testing
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:25 pm | |
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:25 pm | |
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:26 pm | |
| Resistor Resistor is a two-terminal electrical or electronic component that opposes an electric current by producing a voltage drop between its terminals in proportion to the current, that is, in accordance with Ohm's law: V = IR. The electrical resistance R is equals to the voltage drop V across the resistor divided by the current I through the resistor. Resistors are used as part of electrical networks and electronic circuits A resistor can be seen as a dam in a river. Water will have more difficulties to pass this dam. In a resistor this will result in the generation of heat. Resistors come in standard values to choose from. The value of a resistor can be found with the help of a color table. The resistor has a set of colored rings that will tell you its value. First ring: First number Second ring: Second number Third ring: Number of zeros to add Fourth ring: Tolerance [quality of the resistor. Mostly 5%] Color code of resistor 1 Brown 2 Red 3 Orange Yellow Purple Red Brown Black Green 4 Yellow 5 Green 6 Blue 7 Purple 8 Grey 9 'White' 0 Black
Values are often written as 10K, 1M or 4K7. This means in this case 10.000, 1.000.000 and 4700 Ohm. The 'K' just stands for Kilo and tells you that there is a factor 1000 there. The 'M' stands for mega and adds another factor 1000, But in mobile did not use colored resistor, here you can consider schematic, It could be measure by digital meter or with analog meter, Its several types and wattage
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:26 pm | |
| Capacitor A capacitor is an electrical/electronic device that can store energy in the electric field between a pair of conductors (called "plates"). The process of storing energy in the capacitor is known as "charging", and involves electric charges of equal magnitude, but opposite polarity, building up on each plate.
Capacitors are often used in electric and electronic circuits as energy-storage devices. They can also be used to differentiate between high-frequency and low-frequency signals. This property makes them useful in electronic filters. Applications
Energy storage Power conditioning Power factor correction Filtering Signal coupling Decoupling Noise filters, motor starters, Signal processing
Capacitor materials.: multilayer ceramic, ceramic disc, multilayer polyester film, tubular ceramic, polystyrene, metalized polyester film, aluminum electrolytic.
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:27 pm | |
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:28 pm | |
| Now we read what is electricity mean to say basic electricityAttached Files | Basic Electricity.rar (11.9 KB, 1 views) |
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danish_jalal super Admin
Number of posts : 800 Age : 41 Location : india (now in ksa) Registration date : 2007-12-06
| Subject: Re: How you test components ..BY MR.RASHID Thu Aug 14, 2008 8:29 pm | |
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mbiborna Welcome
Number of posts : 3 Age : 40 Registration date : 2009-02-07
| Subject: Re: How you test components ..BY MR.RASHID Sat Feb 07, 2009 6:34 pm | |
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raghavasmartguy Moderators
Number of posts : 182 Age : 36 Location : INDIA Registration date : 2008-02-04
| Subject: Re: How you test components ..BY MR.RASHID Tue Mar 31, 2009 8:54 pm | |
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| Subject: Re: How you test components ..BY MR.RASHID | |
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| How you test components ..BY MR.RASHID | |
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