Abstract: A hair brushing or combing device, a nasal washing device, and a beverage ionizing device, comprising a metal anode being touched by the user; a cathode contacting with the liquid; an electronic circuit; and a switch operable to provide electrical potential to the metal anode, the switch also operable to cause activation of an ionic function.

Abstract: An oscillator circuit with a voltage booster includes separated coils to oscillate and boost the input direct current voltage. The two coils are wound in opposite directs and magnetically coupled to one another. One of the coils is in series with a capacitor to form a LC oscillator. The circuit enables changing the frequency of oscillation by changing the number of turns on the coil in series with the capacitor or by changing the value of the capacitor. The output voltage level can be changed by changing the number of turns on the remaining coil.