Depletion zone in p-n junction, Electrical Engineering

Depletion Zone in P-N Junction

The power of the depletion zone electric field gets increases as the reverse-bias voltage increases. One time the electric field intensity increases further than a critical level, the p-n junction depletion zone breaks-down and current starts to flow, generally by either Zener or avalanche breakdown processes. Both of these types of breakdown processes are non-destructive and are reversible, so long as the amount of current flowing does not reach levels which cause the semiconductor material to overheat and cause thermal damage.

This effect is employed to one's advantage in zener diode regulator circuits. Zener diodes have a specific - low - breakdown voltage. A standard value for breakdown voltage is for example 5.6V. The meaning of this is that the voltage at the cathode can never be more than 5.6V higher than the voltage at the anode, since the diode will break down - and therefore conduct - if the voltage gets any higher. This efficiently regulates the voltage over the diode.

Posted Date: 1/11/2013 12:27:01 AM | Location : United States







Related Discussions:- Depletion zone in p-n junction, Assignment Help, Ask Question on Depletion zone in p-n junction, Get Answer, Expert's Help, Depletion zone in p-n junction Discussions

Write discussion on Depletion zone in p-n junction
Your posts are moderated
Related Questions
Pins  and Signals As  discussed  earlier that  8085  microprocessor  chip has 40 pins shown  various  pins  and signals of 8085  microprocessor. All  these  signals can be   c

Q. What is Signal Multiplexing? Frequency-division multiplexing (FDM) and time-division multiplexing (TDM) systems. When data from many sources in time are interlaced, the inte

Q. A dc source is connected to a series RLC circuit by a switch that closes at t = 0, as shown in Figure, with initial conditions. For the values of R = 20, 40, and 80 , solve for

Hi there, My project title is grid connected hybrid pv-wind power system. For this topic, i need a specification of the system. For this system a matlab and homer software simulati

Q. What are the performance measures of oscillator circuits? 1. Stability: This is determined by the passive components. R, C and L determine frequency of oscillations. If R ch

Q. With a suitable block circuit, show how linear sweep voltage is generated ? The above figure shows a basic sweep waveform generator. The switching action of the switch


Aloudspeaker is a common electrochemical transducer in which vibration is caused by changes in the input current to a coil which, in turn, is coupled to a magnetic structure that c

Extrinsic Material: THE CHARACTERISTICS OF SEMI CONDUCTOR material can be alter significant bin addition of certain impurity atoms into the relatively pure se conductor mater

Self-inductance and the induced e.m.f Inductance is the name given to the property of a circuit whereby there is an e.m.f induced into the circuit by alter of flux linkages pro