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公开(公告)号：US5866968A
公开(公告)日：1999-02-02
申请号：US852505
申请日：1997-05-07
申请人： Harold W. Mech
发明人： Harold W. Mech
IPC分类号： H01L41/107 , H01L41/04 , H02M7/537
CPC分类号： H01L41/044 , H02M7/537 , Y02B70/1441
摘要： A circuit (10) for driving a piezoelectric transformer (12) in a phase locked mode without using an external reference signal. The circuit (10) utilizes a 555 timer circuit operated in a stable mode which is responsive to a feedback phase signal (18) coupled from an output signal (20) of the piezoelectric transformer (12). The feedback phase signal (18) overpowers the trigger circuit of the timer to phase lock the timer to an output of the piezoelectric transformer (12) at a resonant frequency of the piezoelectric transformer (12). The circuit (10) provides a simplified phase lock circuit without the need for a typical PLL configuration.
摘要翻译： 一种用于以锁相模式驱动压电变压器（12）而不使用外部参考信号的电路（10）。 电路（10）利用以稳定模式操作的555定时器电路，其响应于从压电变压器（12）的输出信号（20）耦合的反馈相位信号（18）。 反馈相位信号（18）超过定时器的触发电路，以压电变压器（12）的谐振频率将定时器锁定到压电变压器（12）的输出端。 电路（10）提供简化的锁相电路，而不需要典型的PLL配置。
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公开(公告)号：US4334343A
公开(公告)日：1982-06-15
申请号：US180761
申请日：1980-08-25
CPC分类号： H03H9/0519 , H01L41/29 , Y10T29/42 , Y10T29/49179
摘要： A crystal is mounted on a low, centrally located pedestal. Connections to the lower side of the crystal are made by way of conductive areas on the pedestal. Multiple wiring connections are made at the edges of the crystal by allowing the bonding tool to depress the edge of the crystal so that the crystal bonding pad is supported by the base structure only during the bonding process, then released thereafter to allow free vibration of the crystal plate. Complex circuitry, possibly involving more than one frequency can thus be put onto one plate.
摘要翻译： 一个晶体安装在低位于中央的基座上。 与晶体下侧的连接是通过基座上的导电区域制成的。 通过允许接合工具压下晶体的边缘，在晶体的边缘处进行多个接线连接，使得晶体接合焊盘仅在接合过程期间由基体结构支撑，然后释放以允许晶体的自由振动 水晶板。 因此，可能涉及多于一个频率的复杂电路可以放在一个板上。
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公开(公告)号：US4282454A
公开(公告)日：1981-08-04
申请号：US33774
申请日：1979-04-27
CPC分类号： H03H9/0519 , H01L41/29 , Y10T29/42 , Y10T29/49179
摘要： A crystal is mounted on a low, centrally located pedestal. Connections to the lower side of the crystal are made by way of conductive areas on the pedestal. Multiple wiring connections are made at the edges of the crystal by allowing the bonding tool to depress the edge of the crystal so that the crystal bonding pad is supported by the base structure only during the bonding process, then released thereafter to allow free vibration of the crystal plate. Complex circuitry, possibly involving more than one frequency can thus be put onto one plate.
摘要翻译： 一个晶体安装在低位于中央的基座上。 与晶体下侧的连接是通过基座上的导电区域制成的。 通过允许接合工具压下晶体的边缘，在晶体的边缘处进行多个接线连接，使得晶体接合焊盘仅在接合过程期间由基底结构支撑，然后释放以允许晶体的自由振动 水晶板。 因此，可能涉及多于一个频率的复杂电路可以放在一个板上。
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公开(公告)号：US5872419A
公开(公告)日：1999-02-16
申请号：US923652
申请日：1997-09-04
IPC分类号： H01L41/107 , H01L41/08
CPC分类号： H01L41/107
摘要： A piezoelectric transformer with voltage feedback is disclosed. The transformer comprises a piezoelectric plate of predetermined length, width and height with a driving section formed by alternately stacking a plurality of piezoelectric ceramic layers having internal interdigitated electrode layers. A driven section including an unpolarized dielectric section, a voltage feedback section in the form of a multilayer electrode structure or an outer strip, and a normally polarized dielectric section is also disclosed. The transformer generates an output voltage at an output terminal by the piezoelectric vibration transmitted from the driving section. A feedback control circuit is connected to the voltage feedback section. The isolated voltage feedback provides feedback control to keep the transformer operating at the proper resonant frequency even as there is a change in output load of the transformer.
摘要翻译： 公开了一种具有电压反馈的压电变压器。 变压器包括具有预定长度，宽度和高度的压电板，驱动部分通过交替地堆叠具有内部交叉电极层的多个压电陶瓷层而形成。 还公开了一种包括非偏振电介质部分的驱动部分，多层电极结构或外部条带形式的电压反馈部分和常平极化电介质部分。 变压器通过从驱动部传递的压电振动在输出端产生输出电压。 反馈控制电路连接到电压反馈部分。 隔离电压反馈提供反馈控制，以保持变压器工作在正确的谐振频率，即使变压器的输出负载有变化。
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公开(公告)号：US4955059A
公开(公告)日：1990-09-04
申请号：US330248
申请日：1989-03-29
申请人： Harold W. Mech
发明人： Harold W. Mech
摘要： A method and apparatus for controlling the sound pressure levels of a substantially capacitive speaker. The controlling element is substantially capacitive and may be either fixed or variable.
摘要翻译： 一种用于控制基本上电容式扬声器的声压级的方法和装置。 控制元件基本上是电容性的并且可以是固定的或可变的。
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