Acoustic transformer with non-piezoelectric core
First Claim
Patent Images
1. A transformer for transmitting energy across a medium, comprising:
- (a) a primary transducer juxtaposed to a first side of the medium;
(b) a secondary transducer juxtaposed to said medium on a second side thereof opposite to said first side;
(c) a generator coupled to said primary transducer for applying an AC driving signal thereto; and
(d) means for varying the load across said secondary transducer so as to induce variations in said AC driving signal across said primary transducer.
1 Assignment
0 Petitions
Accused Products
Abstract
A transformer for transmitting energy across a medium, comprised of a primary transducer juxtaposed to the first side of the medium, a secondary transducer juxtaposed to the medium on a second side opposite to the first side and a generator coupled to the primary transducer for applying a driving signal thereto.
115 Citations
19 Claims
-
1. A transformer for transmitting energy across a medium, comprising:
-
(a) a primary transducer juxtaposed to a first side of the medium; (b) a secondary transducer juxtaposed to said medium on a second side thereof opposite to said first side; (c) a generator coupled to said primary transducer for applying an AC driving signal thereto; and (d) means for varying the load across said secondary transducer so as to induce variations in said AC driving signal across said primary transducer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A transformer for transmitting energy across a medium, comprising:
-
(a) a primary piezoelectric transducer coupled to one side of said medium; (b) a secondary piezoelectric transducer coupled to an opposite side of said medium; (c) means for generating an AC signal driving across said primary transducer; (d) means for varying the load on said secondary transducer; (e) detecting means for detecting changes in current through and voltage across said primary transducer due to varying the load on said secondary transducer; (f) a rectifier and filter at an output of said secondary transducer operative to produce a source of DC voltage on said opposite side. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A transformer assembly for transmitting energy across a medium, comprising:
-
(a) a piezoelectric power transducer coupled one side of said medium; (b) a secondary power piezoelectric transducer coupled to a second side opposite said one side of said medium; (c) means for generating an AC signal across said primary power transducer so as to induce a signal in said secondary power transducer; (d) means for rectifying and filtering the signal induced in said secondary power transducer so as to provide a DC power supply for circuits on the side of said medium; (e) means for generating a signal proportional to the magnitude of a sensed condition on the second side; (f) a primary data transducer on the second side of said medium coupled to an output of said generating means; (g) a secondary data transducer on the one side of said medium positioned so as to receive an induced signal from said primary data transducer; and (h) a demodulator coupled to the secondary data transducer for demodulating the induced signal therefrom. - View Dependent Claims (17, 18)
-
-
19. A method of transmitting energy across a medium comprising,
(a) driving a primary transducer on one side of a medium with a varying signal so as to induce a corresponding signal in a secondary transducer positioned on a second side of the medium; - and
(b) detecting the magnitude of a physical condition on the second side of the medium; (c) generating a sensor signal proportional to the magnitude of the physical condition; (d) varying the load on the secondary transducer in response to the magnitude of the generated sensor signal; and (e) detecting a primary side signal induced in said primary transducer produced as a result of varying the load on the secondary transducer.
- and
Specification