TWM646951U - Surge receiver and AC signal source device and circuit system using the same - Google Patents

Abstract

A surge receiver is used to suppress voltage transients of a first AC signal provided by an AC signal source and to mitigate voltage noise of the first AC signal, and includes a supercapacitor and a metal oxide varistor. In order for the surge receiver to suppress voltage transients and mitigate voltage noise at the same time, the multiple electrodes of the selected supercapacitor must be adapted to mid/high frequency response and have a structure. The electrode must be structural, such as tubular, cylindrical, sheet or conical, and must be made of non-porous material. The first terminal of the supercapacitor is electrically connected to the first output terminal of the AC signal source and the first terminal of the load, the first terminal of the metal oxide varistor is electrically connected to the second terminal of the supercapacitor, and the metal oxide varistor is The second end of the resistor is electrically connected to the second output end of the AC signal source and the second end of the load.

Description

Surge receivers and AC signal source devices and circuit systems using them

The present invention relates to a surge receiver and an AC signal source device and circuit system using the surge receiver, and in particular to a supercapacitor designed with structural electrodes to simultaneously suppress voltage transients of AC signals and mitigate AC signals. Surge receivers for the purpose of voltage noise and AC signal source devices and circuit systems using them.

Very large-scale integration (VLSI) based on sub-25 nm dimensions is powered by a DC power supply of less than 1 volt, and protection against voltage transients has now become a Mandatory requirements for electronic systems. Prior art surge receivers were typically designed using nonlinear devices such as metal oxide varistors and semiconductor components. However, when prior art surge receivers are repeatedly subjected to surges, the metal oxide varistor and semiconductor components used in the circuit may gradually heat up and eventually fail. Furthermore, if a surge receiver is repeatedly subjected to statistically higher peak surges, various components within the surge receiver may fail, and the surge receiver may no longer be able to absorb the surge to the point where it is unable to protect the connected devices. load and/or protected circuit.

Please refer to Figure 1, which is a waveform diagram of an AC sinusoidal signal with voltage transients and voltage noise. In Figure 1, the maximum amplitude of the AC sinusoidal signal without voltage transients and voltage noise is Av, and its period is T. When a voltage greater than the maximum amplitude Av is generated in a short period of time τ (note, T>τ), and the voltage difference A compared to the maximum amplitude Av is greater than the maximum amplitude Av, it means that voltage transients 10a and 10b have occurred, so A surge receiver is required to receive the surge of voltage transients 10a and 10b. On the other hand, the AC sine wave signal may have voltage noise 11 due to voltage transients 10a and 10b, but the existing method is to additionally set up aluminum electrolytic capacitors to achieve appropriate suppression effects. Simply put, there is still room for improvement in the current surge receiver products on the market.

Based on the above purpose, the present invention provides a surge receiver, and the surge receiver can be used to suppress the voltage transient of the first AC signal provided by the AC signal source and mitigate the voltage noise of the first AC signal. Surge receivers include supercapacitors and metal oxide varistors. The plurality of electrodes of the supercapacitor are adapted to medium/high frequency response and are structural. Each electrode is structurally tubular, columnar, sheet-shaped or cone-shaped, and is made of non-porous material, and the first end of the supercapacitor Electrically connected to the first output end of the AC signal source and the first end of the load. The first terminal of the metal oxide varistor is electrically connected to the first terminal of the supercapacitor, and the second terminal of the metal oxide varistor is electrically connected to the second output terminal of the AC signal source and the second terminal of the load.

Optionally, in one implementation of the present invention, the surge receiver may further include a connector, wherein the first end and the second end of the connector are electrically connected to the first end and the third end of the metal oxide varistor respectively. Two ends.

Optionally, in one implementation of the present invention, the surge receiver may further include a resistor, wherein the resistor is electrically connected between the second end of the supercapacitor and the first end of the metal oxide varistor.

Optionally, in one implementation of the present invention, the surge receiver itself has parasitic internal resistance.

Optionally, in one implementation of the present invention, the material of each electrode of the supercapacitor is carbon nanotubes or graphene.

Based on the above purpose, the present invention provides an AC signal source device, and the AC signal source device includes any of the above surge receivers and the above AC signal source.

Optionally, in one implementation of the present invention, the AC signal source is a transformer, the AC signal source device is a transformer device, and the transformer includes a yoke coil and an input capacitor. The first output end and the second output end of the yoke coil serve as the first output end and the second output end of the AC signal source device respectively. The first end and the second end of the input capacitor are electrically connected to the first input end and the second input end of the yoke coil respectively, wherein the first input end and the second input end of the yoke coil respectively receive the second AC signal. a voltage and a second voltage.

Optionally, in one implementation of the present invention, the AC signal source device further includes a fuse, wherein the fuse is electrically connected between the first voltage and the first input end of the yoke coil.

Based on the above objectives, the present invention provides a circuit system, and the circuit system includes any of the above-mentioned AC signal source devices and the above-mentioned load.

Optionally, in one implementation of the present invention, the circuit system further includes a protected circuit, wherein the first end and the second end of the protected circuit are electrically connected to the first end and the second end of the metal oxide varistor respectively. end.

In short, the present invention provides a surge receiver that can simultaneously suppress voltage transients of AC signals and mitigate voltage noise of AC signals, and an AC signal source device and circuit system using the surge receiver. Compared with previous surge receivers, this new surge receiver has better surge absorption capabilities. In addition to being able to absorb surges, this new surge receiver can also be adapted to medium/high frequencies. response, thereby mitigating voltage noise, so overall, the new surge receiver has better power management efficiency.

In order to help the examiner understand the technical features, content and advantages of the present invention and the effects it can achieve, the present invention is described in detail below in the form of embodiments with the accompanying drawings, and the drawings used therein are as follows. The subject matter is only for illustrative and auxiliary instructions, and may not represent the true proportions and precise configuration of the present invention after implementation. Therefore, the proportions and configuration relationships of the attached drawings should not be interpreted to limit the scope of rights of the present invention in actual implementation. Let’s explain first.

This new model mainly provides a two-in-one surge receiver. In addition to suppressing voltage transients of AC signals, this surge receiver can also reduce voltage noise of AC signals while suppressing voltage transients. Surge receivers mainly include supercapacitors and metal oxide varistors. In order for the surge receiver to suppress voltage transients and mitigate voltage noise at the same time, the multiple electrodes of the supercapacitor selected in this new type must be adapted to mid/high frequency response and have a structural structure. In the present invention, the electrode structure is tubular, columnar, sheet or cone-shaped, and must be made of non-porous material. By connecting the above selected supercapacitor and metal oxide varistor in series, it can be used to implement a surge receiver that achieves the above two-in-one function. In addition, in addition to the above-mentioned surge receiver, embodiments of the present invention also provide an AC signal source device and circuit system using the above-mentioned surge receiver.

First, please refer to FIG. 2 , which is a circuit diagram of an AC signal source device according to an embodiment of the present invention, taking a transformer device as an example. The AC signal source device includes an AC signal source (ie, a transformer composed of a yoke coil T1 and an input capacitor CX1) and a surge receiver 1. The AC signal source is used to provide a first AC signal to a load connected to the surge receiver 1 and the first output end and the second output end of the AC signal source device. The first AC signal consists of a positive voltage and a negative voltage (ie, the voltage on the first output terminal and the second output terminal of the yoke coil T1). The surge receiver 1 is mainly used to suppress the voltage of the first AC signal. Transients and voltage noise mitigating the first AC signal.

Surge receiver 1 includes supercapacitor SC, resistor R1 and metal oxide varistor MOV. The plurality of electrodes of the supercapacitor SC are adapted to medium/high frequency response and are structural. Each electrode is made of non-porous material, and the length-to-width ratio of each electrode is a specific value, and the first terminal of the supercapacitor SC has electrical properties. Connect the first output terminal of the AC signal source (ie, the first output terminal of the yoke coil T1) and the first terminal LOAD+ of the load. The first terminal of the metal oxide varistor MOV is electrically connected to the first terminal of the supercapacitor SC, and the second terminal of the metal oxide varistor MOV is electrically connected to the second output terminal of the AC signal source (i.e., the yoke current The second output terminal of the coil T1) and the second terminal of the load LOAD-. The resistor R1 is electrically connected between the second terminal of the supercapacitor SC and the first terminal of the metal oxide varistor MOV.

The supercapacitor SC and the metal oxide varistor MOV are placed at the end of the AC signal source (i.e., the first output terminal and the second output terminal of the yoke coil T1), so they help to build a long-term stable resistor-capacitor circuit. , to dissipate the transient energy generated by the voltage transient in the first AC signal to achieve the function of absorbing high-voltage transient surges. In addition, on the one hand, unlike supercapacitors that generally use porous electrodes, supercapacitors that use structural electrodes of non-porous materials can adapt to medium/high frequency response. Therefore, supercapacitor SC can absorb high-voltage transient surges while also The resistor-capacitor circuit can also be used as a medium/high frequency filter to simultaneously reduce voltage noise.

In this new embodiment, the material of each electrode of the supercapacitor SC is carbon nanotubes or graphene. The electrodes composed of carbon nanotubes or graphene are themselves non-porous electrodes and have a certain length-to-width ratio. It is structural in three-dimensional space, but the present invention is not limited to electrodes made of carbon nanotubes or graphene materials. Other supercapacitor SCs with structural electrodes can also be used to implement the invention.

Incidentally, the surge receiver 1 itself has a parasitic internal resistance. When the resistance value of the parasitic internal resistance is large enough, the above-mentioned resistor R1 can be removed from the surge receiver 1. That is, the resistor R1 is not a surge Essential components of receiver 1. On the other hand, the surge receiver 1 may further include a connector CN, wherein the first end and the second end of the connector CN are electrically connected to the first end and the second end of the metal oxide varistor MOV respectively. The connector CN is mainly used to electrically connect the protected circuit outside the load. In the new embodiment, the connector CN is not an essential component of the surge receiver 1 and can be selectively removed.

The embodiment of FIG. 2 takes the AC signal source as a transformer and the AC signal source device as a transformer device as an example, but the present invention is not limited to this. In the embodiment of FIG. 2, the transformer includes a yoke coil T1 and an input capacitor CX1. The first output end and the second output end of the yoke coil T1 serve as the first output end and the second output end of the AC signal source device respectively. The first end and the second end of the input capacitor CX1 are electrically connected to the first input end and the second input end of the yoke coil T1 respectively, wherein the first input end and the second input end of the yoke coil T1 receive the second AC respectively. The first voltage VAC+ of the signal and the second voltage VAC- of the second AC signal. Through the action of the yoke coil T1, the second AC signal can be stepped down or boosted to generate the first AC signal. In addition, preferably, the AC signal source device further includes a fuse F1, wherein the fuse F1 is electrically connected between the first voltage VAC+ of the second AC signal and the first input end of the yoke coil T1, but this fuse F1 is not AC Essential component of the signal source device and can be optionally removed.

Please refer to Figure 3, which is a performance curve of the surge receiver according to the new embodiment of the present invention. In Figure 3, the vertical axis is the output voltage of the surge receiver in volts, and the horizontal axis is the superimposed voltage of the surge voltage and 110V AC in kilovolts. The curve CUR1 represents the surge absorption performance of a surge receiver using ordinary capacitors (non-supercapacitors), the curve CUR2 represents the surge absorption performance of a surge receiver using supercapacitors with porous electrodes (non-structural electrodes), and the curve CUR3 represents the surge absorption performance of a surge receiver using a supercapacitor with structural electrodes (ie, the new surge receiver of the present invention). Compared with general capacitor (non-supercapacitor) surge receivers (ie, comparison curves CUR1, CUR3), the new surge receiver can absorb an additional 20% of the surge. Compared with porous electrodes (non-structural) For surge receivers with supercapacitors (i.e., comparison curves CUR2 and CUR3), the surge absorption effect of the new surge receiver 1 is still better.

Please refer to Figure 4, which is a block diagram of a circuit system according to an embodiment of the present invention. The circuit system includes an AC signal source device 41, a load 42 and a protected circuit 43, wherein the AC signal source device 41 includes the aforementioned surge receiver 1. The AC signal source device 41 receives the second AC signal. Further, the first input terminal and the second input terminal of the AC signal source of the AC signal source device 41 respectively receive the first voltage VAC+ of the second AC signal and the voltage VAC+ of the second AC signal. The second voltage VAC-.

The surge receiver 1 of the AC signal source device 41 receives the first AC signal provided by the AC signal source, and further, the first end and the second end of the surge receiver 1 are electrically connected to the first output of the AC signal source. terminal and the second output terminal to receive the first AC signal. The first terminal and the second terminal of the surge receiver 1 are also electrically connected to the first terminal LOAD+ and the second terminal LOAD- of the load 42 . In addition, the surge receiver 1 may have a connector, wherein the first connection end CN+ of the connector and the second connection end CN- of the connector are electrically connected to the first end and the second end of the protected circuit 43 respectively. The protected circuit 43 may be a precision circuit or a circuit that is easily damaged, but the present invention is not limited to the type of the protected circuit 43 .

As can be seen from the above description, the present invention provides a surge receiver designed to use a supercapacitor with structural electrodes to simultaneously suppress the voltage transient of the AC signal and mitigate the voltage noise of the AC signal, and an AC surge receiver using the same. Signal source device and circuit system. Compared with the prior art surge receiver that only uses ordinary capacitors, the new surge receiver can absorb an additional 20% of voltage transient surges. Furthermore, compared with surge receivers using supercapacitors with porous electrodes, the new surge receiver not only has a better ability to absorb voltage transient surges, but also can suppress voltage transients at the same time. Voltage transients in AC signals and voltage noise mitigation in AC signals. As a result, the new surge receiver has better power management efficiency.

The above-described embodiments are only for illustrating the technical ideas and characteristics of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They should not be used to limit the patent scope of the present invention. That is to say, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention should still be covered by the patent scope of the present invention.

10a, 10b: Voltage transient 11: Voltage noise A: Voltage difference Av: maximum amplitude T: period τ: short time 1: Surge receiver VAC+: the first voltage of the second AC signal VAC-: the second voltage of the second AC signal F1: fuse CX1: input capacitor T1: Yoke coil SC: super capacitor R1: Resistor MOV: metal oxide varistor CN: Connector LOAD+: first end LOAD-:Second end CUR1～CUR3: Curve CN+: the first connection end of the connector CN-: The second connection end of the connector 41: AC signal source device 42:Load 43: Protected circuit

The accompanying drawings are provided to enable those with ordinary knowledge in the technical field to which the present invention belongs to further understand the present invention, and are incorporated into and constitute a part of the specification of the present invention. The drawings illustrate exemplary embodiments of the invention and, together with the description of the invention, serve to explain the principles of the invention.

Figure 1 is a waveform diagram of an AC sinusoidal signal with voltage transients and voltage noise.

FIG. 2 is a circuit diagram of an AC signal source device according to an embodiment of the present invention, taking a transformer device as an example.

Figure 3 is a performance curve diagram of the surge receiver according to the new embodiment of the present invention.

Figure 4 is a block diagram of the circuit system of the embodiment of the present invention.

1: Surge receiver

VAC+: the first voltage of the second AC signal

VAC-: the second voltage of the second AC signal

F1: fuse

CX1: input capacitor

T1: Yoke coil

SC: super capacitor

R1: Resistor

MOV: metal oxide varistor

CN: Connector

LOAD+: first end

LOAD-:Second end

Claims (10)

A surge receiver is used to suppress a voltage transient (10a, 10b) of a first AC signal provided by an AC signal source device (41) and to mitigate a voltage noise (11) of the first AC signal. ), including: a supercapacitor (SC) with a plurality of electrodes adapted to a medium/high frequency response and structural, wherein each of the electrodes is structurally tubular, columnar, sheet-like or conical, and is Non-porous material, and a first terminal of the supercapacitor (SC) is electrically connected to a first output terminal of the AC signal source and a first terminal (LOAD+) of a load (42); and a metal oxide voltage A sensitive resistor (MOV), a first end of which is electrically connected to the first end of the supercapacitor (SC), and a second end of which is electrically connected to a second output end of the AC signal source and a load (42) a second end (LOAD-). The surge receiver of claim 1 further includes: a connector (CN), a first end and a second end of which are electrically connected to the first end of the metal oxide varistor (MOV) respectively. end with the second end. The surge receiver of claim 1 further includes: a resistor (R1) electrically connecting the second terminal of the supercapacitor (SC) and the first terminal of the metal oxide varistor (MOV). between ends. The surge receiver of claim 1, wherein the surge receiver itself has a parasitic internal resistance. The surge receiver of claim 1, wherein the material of each electrode of the supercapacitor (SC) is a carbon nanotube or a graphene. An AC signal source device, including: a surge receiver as described in one of claims 1 to 5; and the AC signal source. The AC signal source device as claimed in claim 6, wherein the AC signal source is a transformer, the AC signal source device (41) is a transformer device, and the transformer includes: a yoke coil (T1), a first An output terminal and a second output terminal respectively serve as the first output terminal and the second output terminal of the AC signal source device (41); and an input capacitor (CX1) has a first terminal and a second terminal A first input end and a second input end of the yoke coil (T1) are electrically connected respectively, wherein the first input end and the second input end of the yoke coil (T1) respectively receive a second AC A first voltage of the signal (VAC+) and a second voltage of a second AC signal (VAC-). The AC signal source device according to claim 7, further comprising: a fuse (F1) electrically connected between the first voltage (VAC+) of the second AC signal and the first input of the yoke coil (T1) between ends. A circuit system includes: the AC signal source device (41) as described in claim 6; and the load (42). The circuit system as claimed in claim 9, further comprising: a protected circuit (43), a first end and a second end of which are respectively electrically connected to the first end of the metal oxide varistor (MOV). with that second end.

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