One finger tip vibrating masseur and one low-frequency current treating circuit to act on the insomnia acupoints and finger tip may be increased to raise the hypnogenesis effect.

The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.

Shielding may be essential in a switching system if a mixture of low current, high voltage, and high frequency signals are present.