Ujt as a relaxation oscillator , Electrical Engineering

Assignment Help:

UJT as a  relaxation  oscillator

The UJT  is a highly  efficient  switch  it is  used as trigger  a device for SCR. No sinusoidal oscillators saw tooth generators phase control  and timing circuits. Since  UJT  shows negative resistance characteristics it is mostly used  as  a relaxation oscillator.  Relaxation oscillator. Initially the voltage  across capacitor is zero  hence UJT  is off in this condition a small  reverse leakage  current  as a emitter current will be  flowing. As shown  in capacitor  C will  begin  to charge by VBB through  resistor R.


Related Discussions:- Ujt as a relaxation oscillator

Simulink help, I want simulink model for carrier based pwm method

I want simulink model for carrier based pwm method

Dc motor, what is the reason of low meagger result of dc motor

what is the reason of low meagger result of dc motor

Form factor, why voltages are in multiple in 11

why voltages are in multiple in 11

Explain the working of an npn transistor, Explain the working of an npn tra...

Explain the working of an npn transistor. Working of npn transistor: In an npn transistor is demonstrated in the figure. The emitter base junction is forward biased whereas

Sketch the individual phase flux contributions, Q. Consider the balanced th...

Q. Consider the balanced three-phase alternating currents, shown in Figure, to be flowing in phases a, b, and c, respectively, of the two pole stator structure shown in Figure with

Determine the largest crest factor, A quantizer has 130 quantum levels that...

A quantizer has 130 quantum levels that exactly span the extremes of a symmetrically ?uctuating message with step size δv = 0.04 V. Determine the following: (a) |f(t)|max.

DC shunt generator, in DC series generator we consider Eg=V+Ia(Ra+Rse).But ...

in DC series generator we consider Eg=V+Ia(Ra+Rse).But in DC shunt generator why it is only Eg=V+IaRa and not Eg=V+Ia(Ra*Rsh/Ra+Rsh)

Design the high-pass filter, Q. Design the high-pass filter shown in Figure...

Q. Design the high-pass filter shown in Figure (by determining C) to have a half-power frequency of 1 MHz.

Model and simulaions, a short review article on the classification of time ...

a short review article on the classification of time frame

Role of central and state governments, Role of Central and State Government...

Role of Central and State Governments The subsequent roles of Central and State Governments are envisaged in the Act: The Central Government will Notify rules

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd