Piezoelectric isolating transformer
First Claim
1. A piezoelectric isolating transformer characterized by an operating frequency range, the piezoelectric isolating transformer comprising a resonant structure having at least one mechanical resonance in the operating frequency range, said resonant structure comprising:
- an insulating substrate having a first major surface and a second major surface opposite said first major surface; and
a first electro-acoustic transducer and a second electro-acoustic transducer mechanically coupled to said first major surface and said second major surface, respectively, of said substrate, one of said electro-acoustic transducers operable to convert an input electrical power in said operating frequency range to acoustic energy that excites mechanical vibration in said resonant structure, the other of said electro-acoustic transducers converting said mechanical vibration to output electrical power.
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Accused Products
Abstract
The piezoelectric isolating transformer is characterized by an operating frequency range and includes a resonant structure having at least one mechanical resonance in the operating frequency range. The resonant structure has an insulating substrate, a first electro-acoustic transducer and a second electro-acoustic transducer. The substrate has a first major surface and a second major surface opposite the first major surface. The first electro-acoustic transducer is mechanically coupled to the first major surface. The second electro-acoustic transducer is mechanically coupled to the second major surface. One of the transducers is operable to convert input electrical power in the operating frequency range to acoustic energy that excites mechanical vibration in the resonant structure. The other of the transducers converts the mechanical vibration to output electrical power.
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Citations
26 Claims
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1. A piezoelectric isolating transformer characterized by an operating frequency range, the piezoelectric isolating transformer comprising a resonant structure having at least one mechanical resonance in the operating frequency range, said resonant structure comprising:
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an insulating substrate having a first major surface and a second major surface opposite said first major surface; and
a first electro-acoustic transducer and a second electro-acoustic transducer mechanically coupled to said first major surface and said second major surface, respectively, of said substrate, one of said electro-acoustic transducers operable to convert an input electrical power in said operating frequency range to acoustic energy that excites mechanical vibration in said resonant structure, the other of said electro-acoustic transducers converting said mechanical vibration to output electrical power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A DC-to-DC converter, comprising:
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an oscillator;
a rectifier; and
a piezoelectric isolating transformer comprising an input electrically connected to said oscillator, and an output electrically connected to said rectifier. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A fabrication method, comprising:
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providing an insulating substrate having a first major surface and a second major surface opposite said first major surface;
forming a first electro-acoustic transducer on said first major surface of said substrate; and
forming a second electro-acoustic transducer on said second major surface of said substrate opposite said first electro-acoustic transducer. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification