Development of an Experimental System for Current Perception from 1 to 10 MHz

Although the reference level of the contact current is defined in the ICNIRP protection guidelines up to a frequency of 110 MHz, the experimental verifications of the current perception threshold had been performed only up to a frequency of 3 MHz. Therefore, we are currently planning the current perception experiments above 3 MHz. We first developed a current exposure device at frequencies from 1 MHz to 10 MHz. We then performed a preliminary experiment using human volunteers and confirmed that the current perception threshold was actually obtained.