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US 11,606,024 B2Granted
Starter circuit for energy harvesting circuits
AssigneeMatrix Industries, Inc.
InventorsHarald Dillersberger, Douglas W. Tham
Life of this patent
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Abstract
The present disclosure provides a circuits for harvesting energy from an energy source. The energy source may have a first and a second potential of an input voltage. The circuits may further comprise one or more of a charging capacitor, transformers, transistors, or diodes. The circuits may be used for harvesting energy from thermoelectric generators.
Claims11
A starter circuit for energy harvesting circuits for an energy source having a first and a second potential of an input voltage having:
- a charging capacitor (207, 307, 407, 507) which has a first and a second side,
- a first and a second transformer (203, 303, 403, 503, 253, 353, 453, 553) each comprising a primary winding and a secondary winding having a winding start and a winding end,
- a first and a second starting transistor (204, 304, 404, 504, 254, 354, 454, 554),
- a first and a second diode (206, 306, 406, 506, 256, 356, 456, 556) as well as a first and a second stop transistor (222, 322, 422, 522, 272, 372, 472, 572),
- wherein a gate terminal of the first starting transistor (204, 304, 404, 504) is coupled with the winding start of the secondary winding of the first transformer (203, 303, 403, 503) and a drain terminal of the first starting transistor is connected to the winding end of the primary winding of the first transformer (203, 303, 403, 503),
- wherein a first oscillator is formed at least by the first transformer (203, 303, 403, 503) and the first starting transistor (204, 304, 404, 504),
- wherein the first diode (206, 306, 406, 506) is provided between the winding start of the secondary winding of the first transformer (203, 303, 403, 503) and the charging capacitor (207, 307, 407, 507),
- wherein an anode of the first diode (206, 306, 406, 506) is connected to the second side of the charging capacitor (207, 307, 407, 507),
- wherein a source terminal of the first starting transistor (204, 304, 404, 504) is coupled with the second potential of the input voltage,
- wherein the first side of the charging capacitor (207, 307, 407, 507) is at the first potential of the input voltage,
- wherein a gate terminal of the second starting transistor (254, 354, 454, 554) is coupled with the winding start of the secondary winding of the second transformer (253, 353, 453, 553) and a drain terminal of the second starting transistor is connected to the winding end of the primary winding of the second transformer (253, 353, 453, 553),
- wherein a second oscillator is formed at least by the second transformer (253, 353, 453, 553) and the second starting transistor (254, 354, 454, 554),
- wherein the second diode (256, 356, 456, 556) is provided between the winding start of the secondary winding of the second transformer (253, 353, 453, 553) and the charging capacitor (207, 307, 407, 507),
- wherein an anode of the second diode (256, 356, 456, 556) is connected to the second side of the charging capacitor (207, 307, 407, 507),
- wherein a source terminal of the second starting transistor (254, 354, 454, 554) is coupled with the first potential of the input voltage,
- wherein a voltage is generated on the second side of the charging capacitor (207, 307, 407, 507), which voltage is below the first and below the second potential of the input voltage and can be used for disconnecting the first oscillator by means of the first stop transistor (222, 322, 422, 522) and for disconnecting the second oscillator by means of the second stop transistor (272, 372, 472, 572),
- and wherein a partial circuit is provided which uses an oscillating signal of the first or second oscillator to deactivate the other oscillator.
14 more elements
Dependencies are inferred from the claim text.