Tuesday, May 24, 2016

P-N Junction Diode Vs Marriages

A little bit of explanation of a term going to be used in the article many times before I start it.
P-N Junction diode is a electronic device used in many applications including mobile charger, cord less phones, TV etc.  This piece of writing is related to this P-N junction diode. I read somewhere that laws of Physics also termed as Laws of Nature. After spending so many years in Electronic Industry(for those who don't know, Electronics is a branch of Applied Physics) I can relate some behavior and properties of materials with human beings. The comparison is sought between P-N junction Diode and Marriages.

A P-N junction Diode is made by bringing a P-Type element and N-Type element together and making a junction out of it. A marriage is made by bringing a female and male together and making a union out of them. P-type element are essentially pure silicon with some added elements. Due to effect of these elements(impurity), P-Type element are very receptive towards electron. N-Type material are also pure silicon diffused with some excess electron elements.

Males are essentially creation of God with some impurities. They are also very attracted towards opposite sex. Females also have that extra amount of sensitivity, emotional etc. Both are imperfect and both want an opposite to compensate their impurities.

Now when P and N type materials are brought near to each other, some electrons(negative charge particles present in N Type devices) cross the junction and occupy empty spaces in P type devices. This is called depletion layer.

When a woman meets a man, all the worries and emotional baggage is transferred to man. Effectively after transferring so many things, woman becomes neutral and contended. Men who always wished to have some one to take care, initially seem happy and contended as the HOLES are filled.

When a P type material makes a junction with N type, some area near junction is formed where there exist no free place or free electron. As free electron is required for current flow, this area becomes barrier for more flow of electrons. This is called junction barrier. In Applied electronics, to use this junction diode, one need to apply a potential difference across P-N junction. If potential of P type is more than N type, a current flow across the junction. This situation is called Forward Bias. If potential of N type is larger than P type, called Reversed Bias(in most of applications, Diodes operate in Reverse Bias) , more and more electrons from N type enter P type and make this junction barrier thicker and thicker. This will further act as blockage to electron movement and no current flows across junction.

So what is this potential (Voltage) Difference or "Biasing" equates to real life? Is it love or money or Control???

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