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

Need for modulation recognition - software defined radio, Need for Modulati...

Need for Modulation Recognition There are so many communication signals all available with different types of modulation and different frequencies. It is necessary to identify

Define instruction cycle, Define instruction cycle and T-state Instruct...

Define instruction cycle and T-state Instruction cycle is defined, as the time needed completing the execution of an instruction. Machine cycle is defined as the time needed co

Develop logic expression and find one possible logic circuit, Q. Figure (a)...

Q. Figure (a) shows the seven-segment array that iswidely used to formthe decimal digits 0 to 9 in LEDdisplays, as indicated in Figure(b). Let the inputs be the four binary digits

CRO, draw a labled diagram of CRO and explain the function of its parts

draw a labled diagram of CRO and explain the function of its parts

Compute the maximum electromagnetic power, Q. A four-pole dc machine with 7...

Q. A four-pole dc machine with 728 active conductors and 30mWb flux per pole runs at 1800 r/min. (a) If the armature winding is lap wound, find the voltage induced in the armatu

Construct the corresponding transfer function, Consider the following IIR f...

Consider the following IIR filter. The initial input data sequence is given by x n = [10 15 20 15 8 6 9 0 0 0] Construct a table that shows the corresponding signal values at

Measurement, explain a basic measurement system

explain a basic measurement system

Find the bandwidth of the circuit, Q. A simple parallel resonant circuit wi...

Q. A simple parallel resonant circuit with L = 50 µH is used to performthe frequency selection. The circuit is to be tuned to the first station at a frequency of 1000 kHz. In order

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