What is high frequency current?

Medium frequency currents are the currents whose frequency falls between the range of 1000 to 10,000 Hz . They are being used therapeutically due to their advantage of greater penetration and with a higher tolerance and comfort over the low frequency current.

[′lō ‚frē·kwən·sē ′kə·rənt] (electricity) An alternating current having a frequency of less than about 300 kilohertz .

(hī-frē’kwĕn-sē kŭr’ĕnt) An alternating electric current having a frequency of 10,000 or more cycles per second ; it produces no muscular contractions and does not affect the sensory nerves.