Equivalent circuit of unijunction transistor, Electrical Engineering

Equivalent Circuit :

The equivalent circuit of a UJT is shown in fig. The P - N junction represented in the emitter by a diode. Silicon bar being lightly doped has a high resistance and can be represented as two resistors connected in series RB from base 1 to point A and RB2 from base 2 to point A, as shown in fig. the resistance RB is shown as a variable resistor since its magnitude varies with the emitter current IE. In fact, for a typical UJT, RB may vary from 5 k down to 50. For a corresponding change of emitter current IE from 0 to 50 n A. the total resistance of silicon bare from one end to the other end i.e., the resistance between B2 and B1 with emitter terminal E open is called the inter base resistance RBB. From the equivalent circuit shown in fig. it is obvious that with a voltage VBB applied between B2 and B1 as shown in the figure, the voltage at the junction of RB1 and RB2 is.

Posted Date: 2/8/2013 2:54:29 AM | Location : United States







Related Discussions:- Equivalent circuit of unijunction transistor, Assignment Help, Ask Question on Equivalent circuit of unijunction transistor, Get Answer, Expert's Help, Equivalent circuit of unijunction transistor Discussions

Write discussion on Equivalent circuit of unijunction transistor
Your posts are moderated
Related Questions
I need someone help me to do electronics formal lab report, I tried many time to submit it but I couldn''t? plz help me

You have been asked to help on the design of CDU's new electric vehicle. The vehicle is to be powered by a 96V, 300A battery pack and you need to decide on the maximum length you c

Revision  of Basics Although  it is  assumed in this book  that the  reader has  enough  knowledge of  various number systems ( binary, octal and hexadecimal and their relation


Customer Relationship Management Software CRM software products are most varied and variable in cost and functionality. The significant CRM software application includes: a

With a block diagram explain fiber optic communication system Ans: The block diagram of a fiber optic communication system is display below: The input signal is giv

(a) Consider the circuit of the noninverting amplifier in Figure, including an ideal op amp. Obtain an expression for the voltage gain of the overall circuit. (b) Let R i = 10


Q. Why depletion MOSFET is known as "normally-on MOSFET" ? Draw the symbol of n-type and p-type depletion MOSFET. In depletion type MOSFET the drain current flows even when VGS

1. Modeling of Armature and Field Controlled DC motors: Steady state and dynamic models; development of block diagrams;  assumptions used; complexity involved in realistic models;