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

Energy band, Energy band: the energy band picture for Ii an- typ...

Energy band: the energy band picture for Ii an- type, and Iii ap - type semiconductor Indicate the position for, the donor and acceptor levels. Sol.(a)

Current through each resistor for the networking, Find the current through ...

Find the current through each resistor for the networking below using Mesh Analysis and Nodal Analysis.

Determine the force, Consider an electromagnet, as shown in Figure, which i...

Consider an electromagnet, as shown in Figure, which is used to support a solid piece of steel and is excited by a coil of N = 1000 turns carrying a current i = 1.5 A. The cross-se

Explain extrinsic semiconductor, Explain Extrinsic Semiconductor. Extr...

Explain Extrinsic Semiconductor. Extrinsic Semiconductor: An intrinsic semiconductor is able to conduct some current even at room temperature but as this is not helpful for t

Depletion in mosfert, #Minimum 100 words accepted#explain depletion operati...

#Minimum 100 words accepted#explain depletion operations of MOSFET

Speed control of stepper motor by using microcontroller 89c5, Hello sir, m ...

Hello sir, m engineering final year student, we made a project as I mentioned above, I wanna add some extra feature on it, meant to modified it...want to add up some extra feature

Dc electric motors, T h er e are three main types -   The Shu...

T h er e are three main types -   The Shunt Connected DC motor in which the armature coils are connected in parallel with the field coils   The Serie

Mid band voltage gain, For the amplifier circuit shown below estimate the m...

For the amplifier circuit shown below estimate the mid band voltage gain if the EARLY voltage (V A ) of the current mirror transistors is 80 volts.  Assume the d.c biasing is optim

ECE, a problem solving problem

a problem solving problem

Find the impedance of the series combination, Q. An RL series circuit carri...

Q. An RL series circuit carries a current of 0.02 cos 5000t A. For R = 100  and L = 20 mH, find the impedance of the series combination and determine the voltage across the series

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