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

Sphl load stack pointer with hl instruction, SPHL Load Stack  pointer with...

SPHL Load Stack  pointer with HL Instruction This instruction  copies  the contents of HL register  pair  the stack pointer register. The instruction format is             S

Microcomputer - introduction to microprocessors , Microcomputer A micr...

Microcomputer A microprocessor is a  general purpose central processing  until of a digital  computer system. It has  arithmetic  logical unit  control circuits and a set of r

What are the various types of amplifiers, Q. What are the various types of ...

Q. What are the various types of amplifiers? Amplifiers can be classified as follows: (a) Based on the transistor configuration 1. Common emitter amplifier 2. Common c

Find the current through each resistor, For the circuit in figure, find the...

For the circuit in figure, find the current through each resistor.

How many 500-page books can be stored on a 2400-ft, Q. How many 500-page bo...

Q. How many 500-page books can be stored on a 2400-ft, 1600-BPI magnetic tape if a typewritten page contains about 2500 bytes?

Find the voltage, Q. The current sources in Figure are given to be I A = 3...

Q. The current sources in Figure are given to be I A = 30 A and I B = 50 A. For the values of R 1 = 20 ,R2 = 40 , and R3 = 80 , find: (a) The voltage V. (b) The current

Refrigeration and airconditioning, Ask question #Minimum 100 words acceptTh...

Ask question #Minimum 100 words acceptThere are various refrigeration systems employing various methods. State any seven (7) refrigeration systems, mention the method(s) employed t

What are the precautions to be taken, What are the precautions to be taken ...

What are the precautions to be taken before basic work on electrical installations? Ans: Before starting any electrical works on installations disconnect the power supply to

Simplest equivalent circuit topology using lumped elements, Simplest equiva...

Simplest equivalent circuit topology using lumped elements: For each of the Smith chart traces below, sketch (at the right of each chart) the simplest equivalent circuit topol

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