A mobile device having a hair straightening iron, a battery and a case body is disclosed. The case body can include a recess for receiving a mobile device and a charging port to connect to the mobile device when the mobile device is in the case body. The case body can include a switch for connecting the hair straightening iron to the battery to selectively power the hair straightening iron.

A cordless hair care appliance easily convertible between a curling wand and a curling iron. The appliance features a removable clamp formed as a ring portion and hinged clamp, where the ring portion slidably fits onto the barrel of the curling wand. The appliance has an enlarged diameter portion at the interface between the barrel and a main body. The removable clamp is friction fit to the barrel when slid into place at the interface. The appliance may operate by battery alone or using battery plus a DC current supplied by a corded AC adaptor. An internal processing unit manages power usage and determines whether the device is operating in battery mode or corded mode.

A hair styling appliance is described having a pair of electrodes, a chamber located between the electrodes for receiving a section of hair, and a drive unit for applying an alternating voltage to the electrodes to heat the hair dielectrically. The electrodes have a fixed spacing.

A hair styling appliance for dual supply voltage operation is described comprising a body having at least one arm bearing a hair styling heater (560), wherein the hair styling heater comprises one or more heater electrodes (630,632,634,636) for heating the hair styling heater. A first power input is connectable to a battery power source (564) and a second power input is connectable to a mains powered source (561). The first power input and the second power input are each coupled to at least one of the one or more heater electrodes. Such a hair styling appliance is useable for styling when coupled to the mains powered source and when coupled to the battery power source increasing the versatility of the appliance.

A hair styling appliance is described having a first electrode and a second electrode, and a drive unit for applying alternating voltages to the electrodes to heat dielectrically hair located between the electrodes. The drive unit applies a first alternating voltage to the first electrode and a second alternating voltage to the second electrode, and the second alternating voltage is phase shifted relative to the first alternating voltage.

A hair styling appliance is described having a pair of electrodes, and a drive unit for applying an alternating voltage to the electrodes to heat dielectrically hair located between the electrodes. The drive unit includes mutually coupled inductors having a coupling coefficient that varies in response to changes in a spacing of the electrodes.

A power inverter is described that includes an input for connection to a DC voltage, a first switch, a second switch, and a controller for controlling the switches. Each of the switches is connected between the input and ground. The power inverter further includes a first network and a second network. The first network is connected at one end to the first switch and at another end to the second switch. The first network includes a capacitor, an inductor and a capacitor connected in series. The second network is connected at one end to an end of the first network and at another end to the other end of the first network. The second network includes a first sub-network, an output capacitor, and a second sub-network connected in series, where each of the sub-networks includes a capacitor and an inductor connected in series. A pair of outputs are then connected across the output capacitor.

A hair styling appliance is described having electrodes and a drive unit. The drive unit is operable to determine a presence of hair between the electrodes. In response to determining that hair is present, the drive unit applies an alternating voltage to the electrodes to heat the hair dielectrically.

A hair styling appliance is described having a pair of electrodes, a chamber located between the electrodes for receiving a section of hair, and a drive unit for applying an alternating voltage to the electrodes to heat the hair dielectrically. The appliance also has a pair of arms having an open position and a closed position. The arms grip the hair when in the closed position, and the chamber has a height of between 1 mm and 10 mm when the arms are in the closed position.

A hair styling appliance for dual supply voltage operation is described comprising a body having at least one arm bearing a hair styling heater (560), wherein the hair styling heater comprises one or more heater electrodes (630, 632, 634, 636) for heating the hair styling heater. A first power input is connectable to a battery power source (564) and a second power input is connectable to a mains powered source (561). The first power input and the second power input are each coupled to at least one of the one or more heater electrodes. Such a hair styling appliance is useable for styling when coupled to the mains powered source and when coupled to the battery power source increasing the versatility of the appliance.