what is Barkhausen Criterion?

Answer Posted / erik lindberg

Barkhausen's Criterion may be found in his book "Lehrbuch
der Elektronen-Röhren", 3. Band:, “Rückkopplung”, Verlag S.
Hirzel, 1935, Achte Auflage, pp. 4–5, 1960. He pointed out
that an oscillator may be described as an inverting
amplifier (a vacuum tube) with a linear frequency
determining feedback circuit. The non-linear amplifier is a
two-port with a static gain-factor equal to the ratio
between the signals at the ports. The linear feedback
circuit is a two-port with a feed-back-factor equal to the
ratio between the port signals. It is obvious that the
product of the two factors becomes equal to one. The product
is called the Barkhausen Criterion or the "Allgemeine
Selbsterregungsformel" in German language.

Is This Answer Correct ?    3 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is a semi conductor?

565


wath is this mining of hlr

1889


what is an operational amplifier?

613


How to convert binary to gray code and vice-verse?

509


What is a zener diode?

638






What is point contact diode?

570


i am fresher for giving intervivew in it sector and also sales electronics. all about related qustions send me please?

1701


What is the maximum value of tv in msa to calculate r&r?

607


hi i am sushil can anyone send me the previous year question paper for AAI(JR.excecutive,electronics)to my email kingston_s007@yahoo.com

1444


What are the two types of control strategies?

587


What about the year gap criteria for HCL technology?

1765


i m selected in AAI JE. my interview is on 25 sept. 2010. i don't hv any idea abt aai interview. can anyone help me, i want to know interview qus of aai. so pls help me... my e-mail id -- mailmanish_kumar@yahoo.co.in

1549


Explain the primary advantage of multiplexing?

596


One thing you should remember while trying to solve a math series is that math skills are generally not that important, but rather a vulture’s eye is required to get a strong hold on the unusual, yet a craziest of the logical minds is. Keep this in mind and try to complete the sequence with the appropriate number: 201315, 71280, 9253, 212, ?

1457


Explain what is a voltage transfer curve of an op-amp?

584