Integral power of flicker-noise in real systems

Integral power of flicker-noise in transistors of different structure was calculated. Data for calculation was taken from published experimental results of flicker-noise research. Integral power of flicker-noise was calculated in the frequency range for which lower threshold of frequency range is 10
^-7
Hz. Upper threshold of frequency range has frequency value on which flicker-noise equals thermal noise. Calculations indicated that integral power of flicker-noise is only 3-4 times bigger than the power of thermal noise at the same frequency range. Hence, in the range of low frequencies for signal/noise ratio calculation the power of noise should be 3-4 times bigger than thermal noise power. Integral power of flicker-noise of real systems can be calculated using suggested formula in the frequency range in which lower threshold of frequency range is close to 0 Hz.