Capacitor Type on Laptop Motherboard

Capacitor Type on Laptop Motherboard

Capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store energy electrostatically in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric (insulator); for example, one common construction consists of metal foils separated by a thin layer of insulating film. Capacitors are widely used as parts of electrical circuits in many common electrical devices.

Capacitor is basically divided into 2 parts: 

Capacitors Polar and Bipolar/non polar .

They work on different way.Polar capacitor has a positive pole and a negative valve. The installation should not be reversed.

Non-polar capacitor does not have the positive pole or negative pole. Indiscriminate installation. The legs of the capacitor may be mounted upside down on the pole voltage.

Testing this Polar Caps if there is continuity between their pin it mean capacitors short and testing bipolar with no pin connected to the ground , if there is continuity it's mean GOOD.no need to pull them up from circuit ,test on circuit with avometer buzzer continuity.

This Polar capacitors become biggest cause of short on circuit.a little cracks due over heat could make positive and negative poles together.Pay attention to bipolar capacitor if they put on polar line they will be a polar function on circuit.

Capacitor Polar stored energy electrostatically and to be come energy reserves when power spike coming .Boot strap device have a big spike such as processor and graphic chip power.adding some more capacitor on VCCORE and VCCP power are alternated to avoid power spike. Running on low power caused boot up process fail.

Look at the schema Symbol Capacitor is C or PC .Location code mark as PC85 .find on circuit same Location code for actual position on circuit .PC72 is Bipolar capacitor and function as voltage filter or coupling.


Link Ref   : http://adiedkhazbook.blogspot.co.id/p/blog-page_5.html