ZENER DIODE

ZENER DIODE:  Zener diode is used as a voltage regulator. It provides stable reference at the output and operated always in reversed bias direction. The PN junction is heavily doped to construct the Zener diode, when we diode operated in reversed bias the early breakdown is called Zener breakdown, it’s a normal breakdown  all the application is operated in this breakdown after applying higher voltage then the breakdown changed in...

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POWER SUPPLY FILTRATION(Capacitor as a filter)

POWER SUPPLY FILTRATION:   When we convert AC into DC we had a problem that the signal has two states as shown fig (a) but we need straight line DC signal as shown in Fig (b). Here we need something material that changed the eliminate the states and changed into a straight line as in fig (b) for this reason we use power supply filter which will be a capacitor. CAPACITOR AS A FILTER:    We used a capacitor with suitable...

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BRIDGE RECTIFIER

BRIDGE RECTIFIER:  In replacement of full wave rectifier we use Full wave bridge rectifier for rectification, change AC to DC current. But the question is here why we replace full wave rectifier, because bridge rectifier is more reliable than full wave it provide quantity of DC current as output. Overall the phenomenon of working of bridge is likely as full wave. CONSTRUCTION: Bridge rectifier DERIVATION:        ...

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HALF WAVE RECTIFIER

HALF WAVE RECTIFIER:   Half wave rectifier is used to convert AC to DC. In half wave rectifier we use only on diode for rectification.Which gives high amount of ripple factor and only conduct either negative voltage or positive. it operate only one direction current due to use of only one diode. CONSTRUCTION: Half wave rectifier The signal of input and output shown in fig. Half wave rectifier DERIVATION:   First of...

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DIODE MODELS WHEN IT IS IN REVERSED BIAS:

DIODE MODELS WHEN IT IS IN REVERSED BIAS: Same like forward biasing in reversed biasing we study about three models of diode.       1.      Ideal model       2.      Practical model       3.      Complete model IDEAL MODEL:   In ideal model of diode in reversed bias we keep diode model  ‘ Ir’ is zero such...

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MODEL OF DIODE WHEN THE DIODE IS FORWARD BIAS:

MODEL OF DIODE WHEN THE DIODE IS FORWARD BIAS:   When the diode is forward bias there are three type of model can be studied.          1.      Ideal model          2.      Practical model          3.      Complete model IDEAL MODEL:   In ideal model we assume the Vf means the drop...

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DIODE:

DIODE:   Diode is an electronic pn-junction device which is used to rectification. It consists of two material p-type and n-type material the region between P and N material is called depletion region. Diode   Diode is formed by doping. Doping is the process to construct a diode. Symbolically diode is represented by  .  In diode the P-type is covered more place by holes and  small number of electron,...

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