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    • 3. 发明公开
    • DRIVE CIRCUIT FOR AN OSCILLATOR
    • TREIBERSCHALTUNGFÜREINEN OSZILLATOR
    • EP3154191A1
    • 2017-04-12
    • EP15189081.1
    • 2015-10-09
    • The Swatch Group Research and Development Ltd.
    • Bracco, Massimiliano
    • H03B5/36
    • H03B5/32H03B5/06H03B5/364H03K3/02H03K21/38
    • The present invention concerns a drive circuit (11) for driving an oscillator (3). The drive circuit (11) comprises a first inductor (L D ) comprising a first terminal and a second terminal; an electrical energy source (13) connected to the first terminal; and a switching circuit connected to the second terminal and to the oscillator. The switching circuit is configured to operate at least in an off state, where it is configured not to feed electrical energy to the oscillator (3), and in an on state, where it is configured to feed electrical energy to the oscillator (3). The first inductor (L D ) is arranged to store energy in its magnetic field when the switching circuit is in the off state, and, when the switching circuit is in the on state, the switching circuit is arranged to use at least some of the energy stored in the magnetic field to deliver a surge of current from the electrical energy source (13) to the oscillator (3).
    • 本发明涉及用于驱动振荡器(3)的驱动电路(11)。 驱动电路(11)包括:第一电感器(L D),包括第一端子和第二端子; 连接到第一端子的电能源(13); 以及连接到第二端子和振荡器的开关电路。 开关电路被配置为至少处于断开状态,其中它被配置为不向电子振荡器(3)馈送电能,并且在导通状态下,其被配置为向振荡器(3)馈送电能, 。 第一电感器(LD)被布置成在开关电路处于断开状态时在其磁场中存储能量,并且当开关电路处于导通状态时,开关电路被布置成使用至少一些能量 存储在磁场中以将电涌从电能源(13)传递到振荡器(3)。
    • 5. 发明公开
    • ENERGY HARVESTING CIRCUIT WITH AN OSCILLATING STRUCTURE
    • EP3471248A1
    • 2019-04-17
    • EP17196598.1
    • 2017-10-16
    • The Swatch Group Research and Development Ltd
    • Bracco, Massimiliano
    • H02M3/07H02J7/34
    • The present invention relates to an energy harvesting circuit (1) for harvesting energy from at least one energy source (3). The circuit comprises: (a) an oscillating circuit comprising an inductor (Le) and a first capacitor (Ce) for temporarily storing charges from the energy source (3) and connected in series with the inductor (Le), the inductor (Le) being connected to a first oscillating circuit node (4), while the first capacitor (Ce) being connected to a second oscillating circuit node (5); (b) a first switch (S1) connected between the first oscillating circuit node and the energy source (3) for selectively connecting and disconnecting the energy source (3) to or from the oscillating circuit; (c) a second switch (9) connected between ground and the first oscillating circuit node for generating a negative voltage across the first capacitor (Ce) during oscillations of the oscillating circuit (Le, Ce) for collecting charges from the at least one energy source (3) when the voltage across the first capacitor (Ce) is negative; (d) a voltage regulating element (11) for controlling voltage across the energy source (3); (e) a control circuit (6) for controlling opening and closing of the first and second switches; and (f) a clock signal generator (7) for providing a clock signal to the control circuit to allow opening and closing the first and second switches (S1, 9) in a timely coordinated manner.