Ujt as a relaxation oscillator , Electrical Engineering

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.

Posted Date: 4/2/2013 7:46:26 AM | Location : United States







Related Discussions:- Ujt as a relaxation oscillator , Assignment Help, Ask Question on Ujt as a relaxation oscillator , Get Answer, Expert's Help, Ujt as a relaxation oscillator Discussions

Write discussion on Ujt as a relaxation oscillator
Your posts are moderated
Related Questions
Q. Explain Standard set of procedure used in Completing a call? Completing a local telephone call between two subscribers linked to the same telephone switch is accomplished th

1. The photon fluence rate is 10 7 photons mm -2 sec -1 for a beam of γ rays. One fourth of the photons have energies of 100 keV, one half have energies of 80 keV and the remain

Constant Frequency System In this  system chopping period  T is kept constant but the  on time T om is varied. This  system is also referred to pulse with modulation or time

The single phase alternator   The underlined italicised terms in the following text identifies terms that you should understand and remember. The simple two pole generator

Question: (a) Explain the types of hazards in a 5 stage pipeline. (b) Describe the three RAW dependencies in the following instructions. i: R7←R12+R15 i + 1: R8←R7-R1


Define the basic working principle , process characteristics,advantages, disadvantages and application of Laser Beam Machining Process.

May I know if your site can help me with design a snubber and model the circuit using LTSpice software?

Q. In the circuit shown in Figure with an ideal op amp, find v o as a function of v a and v b .

Light Triggering When  light is  thrown  on silicon the hole electron pair get excited an increases hence  the leakage  current of J 2   increases which  will increase I C1 a