摘要:
An electronic circuit for an electric appliance. In one embodiment, there is provided an electronic circuit for a battery-operated electric appliance, which can be inductively fed by an external electric power source, comprising a charging circuit for charging an accumulator (A), which encompasses a charging coil (L2) and a diode (D2), wherein the accumulator (A) is connected in series to the diode (D2) and the charging coil (L2), a light emitting diode (LED) as display for the charging process and/or charging status of the accumulator (A), wherein an end of the charging coil (L2) is connected to the cathode of the diode (D2) and the anode of the light emitting diode (LED) and the negative pole of the accumulator (A) is connected to the anode of the diode (D2).
摘要:
A method for determining a pattern of use of an electric toothbrush is disclosed. The method includes the steps of providing an electric toothbrush including a drive shaft for coupling to a brush part; an electric motor and a drive for providing a first motion of the drive shaft; measuring a characteristic parameter of the electric motor; detecting a distinctive change of the characteristic parameter; and evaluating the distinctive change.
摘要:
The invention relates to a circuit arrangement for controlling an electrical consumer (M), said arrangement being provided with a bridge circuit which comprises four electronic switches (V1, V2, V3, V4) and the consumer (M) which is arranged in the transversal leg of the bridge circuit, and a control circuit (uC) comprising control terminals for the four electronic switches. The control terminal for the first electronic switch (V1) is connected to the control terminal for the fourth electronic switch (V4) by means of a series connection consisting of a first capacitor (C1) and a first resistance (R1), and the control terminal for the third electronic switch (V3) is connected to the control terminal for the second electronic switch (V2) by means of a series connection consisting of a second capacitor (C2) and a second resistance (R2). The invention also relates to a method for switching an electronic switch by means of a control circuit (uC) comprising a control terminal for controlling the electronic switch which can either be switched (“tristate”) as an input (“high impedance”) or as an output (“low” or “high”). The switching of the electronic switch from the conductive slate to the non-conductive state and/or vice versa is carried out in two steps, namely the control terminal is switched from “low” via “high impedance” to “high” or from “high” via “high impedance” to “low”.