The gradient amplifier is an essential equipment of Magnetic Resonance Imaging system (MRI). It supplies the gradient coils with pulse currents according to the signal from the control system.
It is investigated that the characteristics of stochastic resonance of the periodic pulse signal added Gaussian white noise through a threshold system.
研究含有高斯白噪声的周期脉冲信号，通过阈值系统后的随机共振特性。
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For thousands of years the Schumann Resonance or pulse (heartbeat) of Earth has been 7.83 cycles per second, the military have used this as a very reliable reference.