Barkhausen stability criterion
（重定向自Barkhausen Criterion）
![Block diagram of a feedback oscillator circuit to which the Barkhausen criterion applies. It consists of an amplifying element A whose output vo is fed back into its input vf through a feedback network β(jω).](/Images/godic/202412/23/Oscillator_diagram1.svg1753.png")
![](/Images/godic/202412/23/Oscillator_diagram2.svg1753.png")
In electronics, the Barkhausen stability criterion is a mathematical condition to determine when a linear electronic circuit will oscillate. It was put forth in 1921 by German physicist Heinrich Georg Barkhausen (1881–1956). It is widely used in the design of electronic oscillators, and also in the design of general negative feedback circuits such as op amps, to prevent them from oscillating.