摘要:
An electrical appliance with a resonant motor for driving a vibratory component is provided that has a control unit for driving the resonant motor with a predetermined driving frequency and for measuring the motion-induced voltage of the resonant motor and for determining whether the measured voltage value coincides with a predetermined target voltage value or whether the measured voltage value has crossed over the predetermined target value. The control unit measures the motion-induced voltage at a predetermined time of measurement (tm) within a driving cycle.
摘要:
In one aspect, a handheld electric appliance includes: an oscillating electric motor or linear motor controlled by control circuitry; a battery connected to the oscillating electric or linear motor; and charge detection circuitry configured to determine a charging state of the battery. The charge detection circuitry is coupled to the control circuitry such that, in response to the charge detection circuitry determining that the charging state of the battery reaches a predetermined threshold, the control circuitry activates the oscillating electric motor or linear motor to cause noise generated by the motor to perceptibly change to indicate a threshold charging state.
摘要:
A body care appliance for personal use is disclosed. The body care appliance includes a toothbrush; a display device and a sensing device. The display device displays interactive representations that can be controlled interactively from the toothbrush by means of a control device. The sensing device senses at least one operating parameter relating to the toothbrush, wherein the sensing device has position sensing means for sensing the relative position of the toothbrush to the body part of the appliance user. The representations can be controlled by means of the control device depending on the sensed relative position
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”.
摘要:
A personal hygiene system is provided herein. One embodiment comprises a personal hygiene device, such as for example an electric toothbrush, having wireless communication circuitry in combination with a computer readable medium containing processor executable instructions for causing a multimedia device that was previously unassociated with the personal hygiene device to communicate with the personal hygiene device, to receive data from the personal hygiene device related to the use of the personal hygiene device and for causing the multimedia device to provide an output as a function of the data.
摘要:
The invention pertains to a method for determining the dirtiness of a cutting tool and to a hair cutting device with an apparatus for determining the dirtiness of the cutting tool thereof. The method is intended for cutting tools that carry out a back and forth motion and are driven by an oscillating electric motor or linear motor. In order to determine the dirtiness in accordance with said method, a parameter is evaluated that is correlated with the respective state of motion of the cutting tool and used for controlling the oscillating electric motor or linear motor. Parameter changes are continuously measured and cause a dirtiness counter to count up if the parameter value exceeds at least one threshold value. The fact that the count of the dirtiness counter has reached or exceeds a reference value is then conventionally indicated.
摘要:
A small electric appliance is described which comprises an oscillation-capable mechanism (4), an electric motor (1) to drive the oscillation-capable mechanism (4), wherein the electric motor (1) can be operated with a drive current (10) at a predetermined frequency (f), and a device (3) for adjusting the frequency (f) of the drive current of the electric motor (1).Furthermore, a method for adjusting the frequency (f) of a drive current (10) of an electric motor is described comprising the following steps of detecting, at a specified time (tmeas), in relation to the period of the drive current, an electric variable (20) generated by the electric motor (1) determining, at the specified measuring time (tmeas), whether the detected electric variable (20) essentially has a zero-crossing and changing the frequency (f) of the drive current until the detected electric variable (20) essentially has a zero-crossing at the measuring time (tmeas).
摘要:
A personal care device is disclosed. The personal care device includes an electrically powered driving unit for driving a working implement of the personal care device at a desired speed and/or amplitude and/or frequency; and a control unit for controlling the driving unit in response to load onto the working implement. The control unit includes a detector for detecting an operating parameter of the driving unit responsive to load onto the working implement, and a powering unit for varying the electrical powering of the driving unit in response to a detected change of the value of the operating parameter such that speed and/or amplitude and/or frequency of the working implement is changed from an idling value to an operation value.
摘要:
A small electric appliance is described which comprises an oscillation-capable mechanism (4), an electric motor (1) to drive the oscillation-capable mechanism (4), wherein the electric motor (1) can be operated with a drive current (10) at a predetermined frequency (f), and a device (3) for adjusting the frequency (f) of the drive current of the electric motor (1).Furthermore, a method for adjusting the frequency (f) of a drive current (10) of an electric motor is described comprising the following steps of detecting, at a specified time (tmeas), in relation to the period of the drive current, an electric variable (20) generated by the electric motor (1) determining, at the specified measuring time (tmeas), whether the detected electric variable (20) essentially has a zero-crossing and changing the frequency (f) of the drive current until the detected electric variable (20) essentially has a zero-crossing at the measuring time (tmeas).
摘要:
A circuit arrangement for controlling an electrical load is provided with a bridge circuit which comprises four electronic switches with the load arranged in a transverse leg of the bridge circuit. A control circuit has respective control terminals for the four electronic switches. The control terminal for the first electronic switch is connected to the control terminal for the fourth electronic switch by means of a series connection consisting of a first capacitor and a first resistance, and the control terminal for the third electronic switch is connected to the control terminal for the second electronic switch by means of a series connection consisting of a second capacitor and a second resistance.