The invention pertains generally to the field of electronic signal processing, particularly for AC to DC conversion via signal extraction and sample and hold and release.
Conventional approaches for AC to DC conversion employ various analog circuitry to achieve AC-DC conversion. However, such approaches undesirably require many circuit components that may cause signal processing delay, inaccuracy, and/or overall cost to implement. There is need therefore to provide simpler approach for AC to DC signal conversion.
AC-DC signal conversion is achieved by extracting a signal from an AC signal during certain extraction time cycle, then sampling and holding and releasing the extracted signal to generate a DC signal. Extraction element receives AC signal to generate extracted signal, then sample and hold and release element receives the extracted signal to generate DC signal. Extraction and/or sample and hold and release signal processing may use microprocessor or controller programmably to generate the extracted signal and/or DC signal. Extraction is configurable such that AC signal is received at extraction time or temporal window, whereby said extraction element generates the extracted signal at an extraction current or voltage value during at least one extraction time, and preferably said sample and hold and release element generates the DC signal having the same extraction current or voltage value.
AC to DC signal conversion is accomplished generally by extracting from input AC or other sinusoidal signal source to generate an extracted signal, upon which a sample and hold and release functions are applied to the extracted signal to generate an output DC signal. Preferably an extraction element receives the AC signal electronically to generate the extracted signal, whereupon sample and hold and release elements receive the extracted signal electronically to generate DC signal. Extraction and/or sample and hold and release signal processing may use microprocessor, controller or other programmable device to generate the extracted signal and/or DC signal. Extraction is configurable electronically such that AC signal is received or otherwise measured at pre-determined extraction time or temporal window, whereby said extraction element generates the extracted signal having an extraction current and/or voltage value during at least one extraction time, and preferably said sample and hold and release element generates the DC signal having the same extraction current and/or voltage value.
In accordance with one or more aspect of preferred embodiment, such AC signal 30, 32 is detected or otherwise processed electronically for signal extraction by V/sec sampling 12, 20 at one or more determined or pre-determined extraction time (Textract) 35 to generate by extracting 14, 21 extracted signal 38, 39. In particular, extracted signal 38, 39 corresponds with extracted voltage and/or current value (V/Iextr) determined at certain extraction time (Textract), as determined electronically by extraction device 14, 21 or other functionally equivalent extraction means. Preferably no sampling or extraction occurs between extraction or sampling times 38, 39 as shown; since sampling and extraction occurs twice per periodic cycle of AC signal 30, 32. Thus, this extraction sampling release approach advantageously conserves electrical energy by significantly reducing or otherwise eliminating continuous AC-DC signal conversion between signal times 38, 39.
Moreover, sample and hold and release element 15, 22 receives the extracted signal 38′, and thereby generates a sampled and held and released DC signal 34 having the same extracted voltage and/or current value V/Iextr. Thus, for example, starting at t=0 device 10 generates increasingly to generate sampled and held and released DC signal 34 preferably until reaching target voltage or current (V/Iextr), then released or otherwise disconnected at signal time 38 until next signal time 39. Generally it is contemplated herein that signal sampling hold and release enables signal generation of data information, for example, as extracted signal information via voltage level and/or current carry.
In particular, as shown in
Optionally device 10 uses microprocessor, signal processor, or other digital controller automatically to perform signal extraction, and/or sample and hold and release. This optional approach enables other data or signal processing 17, 22 coupled to device 10. Generally it is contemplated herein that such processor or controller may be embodied in any programmable or controllable circuit or logic element, such as simple transistor, comparator, digital gate, or other signal processing circuit.
Foregoing descriptions of specific embodiments of the invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to explain the principles and the application of the invention, thereby enabling others skilled in the art to utilize the invention in its various embodiments and modifications according to the particular purpose contemplated. The scope of the invention is intended to be defined by the claims appended hereto and their equivalents.
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Number | Date | Country | |
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20200014301 A1 | Jan 2020 | US |