CN219351530U - Voltage rising rate adjusting circuit and power supply adapter plate - Google Patents

Abstract

The application discloses a voltage rising rate regulating circuit and a power supply adapter plate. The voltage rising rate adjusting circuit comprises an electronic fuse chip and a capacitance changing sub-circuit, the capacitance changing sub-circuit comprises a dial switch and at least two first capacitances, each input pin of the dial switch is grounded through one first capacitance, each output pin of the dial switch is connected with each other, and each output pin is connected with a soft start pin of the electronic fuse chip. According to the embodiment of the application, the dial switch is used for changing the capacity of the external capacitor of the soft start pin of the electronic fuse chip, so that the soft start time of the electronic fuse chip is changed, the rising rate of the output voltage of the electronic fuse chip can be regulated, and the circuit is simple, and the rising rate of the output voltage of the electronic fuse chip can be regulated by controlling the dial switch, so that the electronic fuse chip is convenient to use.

Description

Voltage rising rate adjusting circuit and power supply adapter plate

Technical Field

The present disclosure relates to electronic circuits, and particularly to a voltage rising rate adjusting circuit and a power adapter board.

Background

Before the electronic devices are mass-produced and sold, various reliability tests must be performed on the electronic devices, for example, power-up and power-down tests on the electronic devices. In general, when performing power-on and power-off test, a default rising rate of a power supply is used, which is insufficient to cover the situation in practical application, and power-on and power-off test cannot be performed on the electronic device comprehensively. Therefore, in order to verify whether the rising and falling rates of the voltage during power-up and power-down affect the judgment of the logic inside the chip of the electronic device, so as to ensure the comprehensiveness of the test, a circuit capable of adjusting the rising rate of the voltage is required.

The method for controlling the rising rate of the power-on voltage in the related art is to design a circuit by using discrete components and a voltage stabilizing chip, so that the regulation is inconvenient, and the circuit is complex.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the voltage rising rate adjusting circuit and the power supply adapter plate are provided, the voltage rising rate can be controlled, and the circuit is simple.

A voltage rise rate adjustment circuit according to an embodiment of the first aspect of the present application, comprising:

an electronic fuse chip;

the capacitance changing sub-circuit comprises a dial switch and at least two first capacitors, wherein each input pin of the dial switch is grounded through one first capacitor, each output pin of the dial switch is connected with each other, and each output pin is connected with a soft start pin of the electronic fuse chip.

The voltage rising rate adjusting circuit according to the embodiment of the application has at least the following beneficial effects: the voltage rising rate regulating circuit comprises an electronic fuse chip and a capacitance changing sub-circuit, wherein the capacitance changing sub-circuit comprises a dial switch and at least two first capacitors, each input pin of the dial switch is grounded through one first capacitor, each output pin of the dial switch is connected with each other, and each output pin is connected with a soft start pin of the electronic fuse chip. According to the embodiment of the application, the dial switch is used for changing the capacity of the external capacitor of the soft start pin of the electronic fuse chip, so that the soft start time of the electronic fuse chip is changed, the rising rate of the output voltage of the electronic fuse chip can be regulated, and the circuit is simple, and the rising rate of the output voltage of the electronic fuse chip can be regulated by controlling the dial switch, so that the electronic fuse chip is convenient to use.

According to some embodiments of the first aspect of the present application, further comprising:

the power input protection sub-circuit comprises a transient suppression diode and a plurality of second capacitors, wherein the output end of the transient suppression diode is connected with a power input pin of the electronic fuse chip, the input end of the transient suppression diode is grounded, and the second capacitors are all connected with the transient suppression diode in parallel.

According to some embodiments of the first aspect of the present application, further comprising:

the voltage output protection sub-circuit comprises a Schottky diode, a third capacitor and a plurality of fourth capacitors, wherein the output end of the Schottky diode is connected with the positive electrode end of the third capacitor, the input end of the Schottky diode is connected with the negative electrode end of the third capacitor, and the input end of the Schottky diode is grounded; and a plurality of fourth capacitors are connected with the Schottky diode in parallel.

According to some embodiments of the first aspect of the present application, further comprising:

the switch sub-circuit comprises a first resistor, a switch unit, a second resistor and a fifth capacitor, wherein one end of the switch unit is connected with a power input pin of the electronic fuse chip through the first resistor, the other end of the switch unit is connected with an input enabling pin of the electronic fuse chip, the other end of the switch unit is grounded through the second resistor, and the fifth capacitor is connected with the second resistor in parallel.

According to some embodiments of the first aspect of the present application, further comprising:

the electronic fuse comprises an electronic fuse chip, and is characterized by comprising an overvoltage setting sub-circuit, wherein the overvoltage setting sub-circuit comprises a third resistor and a fourth resistor, one end of the third resistor is connected with a power input pin of the electronic fuse chip, the other end of the third resistor is connected with a programmable overvoltage limiting pin of the electronic fuse chip, and the programmable overvoltage limiting pin of the electronic fuse chip is grounded through the fourth resistor.

According to some embodiments of the first aspect of the present application, further comprising:

the current limiting setting sub-circuit comprises a fifth resistor, and a programmable current limiting setting pin of the electronic fuse chip is grounded through the fifth resistor.

According to some embodiments of the first aspect of the present application, further comprising:

the current detection sub-circuit comprises a sixth resistor and a sixth capacitor, wherein an output current monitoring pin of the electronic fuse chip is grounded through the sixth resistor, and the sixth capacitor is connected with the sixth resistor in parallel.

According to some embodiments of the first aspect of the present application, further comprising:

the electronic fuse comprises an internal power supply circuit in a chip, wherein the internal power supply circuit in the chip comprises a seventh resistor, a seventh capacitor and an eighth capacitor, one end of the seventh resistor is connected with an internal power supply input pin of the electronic fuse chip, and the other end of the seventh resistor is grounded through the seventh capacitor; and the timing pin of the electronic fuse chip is grounded through the eighth capacitor.

According to some embodiments of the first aspect of the present application, further comprising:

the electronic fuse comprises an indication lamp sub-circuit, a first LED lamp, a second LED lamp, an eighth resistor, a ninth resistor, a tenth resistor and an eleventh resistor, wherein one end of the eighth resistor is connected with an external 5V power supply, the other end of the eighth resistor is grounded through the ninth resistor, one end of the tenth resistor is connected with a normal power supply indication pin of the electronic fuse chip, and the other end of the tenth resistor is connected between the eighth resistor and the ninth resistor; the output end of the first LED lamp is connected with a power source normal indication pin of the electronic fuse chip, and the input end of the first LED lamp is connected between the eighth resistor and the ninth resistor; one end of the eleventh resistor is connected with the fault indication pin of the electronic fuse chip, and the other end of the eleventh resistor is connected between the eighth resistor and the ninth resistor; the output end of the second LED lamp is connected with the fault indication pin of the electronic fuse chip, and the input end of the second LED lamp is connected between the eighth resistor and the ninth resistor.

In a second aspect, embodiments of the present application provide a power supply patch panel, including the voltage rising rate adjusting circuit according to any one of the embodiments of the first aspect.

Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The application is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic circuit diagram of a capacitance changing sub-circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a pin of an electronic fuse chip according to an embodiment of the present disclosure;

FIG. 3 is a schematic circuit diagram of a power input protection sub-circuit according to an embodiment of the present application;

FIG. 4 is a schematic circuit diagram of a voltage output protection sub-circuit according to an embodiment of the present application;

FIG. 5 is a schematic circuit diagram of a switching electronic circuit according to an embodiment of the present application;

FIG. 6 is a schematic circuit diagram of an overvoltage setting subcircuit according to an embodiment of the present application;

FIG. 7 is a schematic circuit diagram of a current limiting arrangement sub-circuit according to an embodiment of the present application;

FIG. 8 is a schematic circuit diagram of a current sensing sub-circuit according to an embodiment of the present application;

FIG. 9 is a schematic circuit diagram of an on-chip electronic circuit according to an embodiment of the present application;

fig. 10 is a schematic circuit diagram of an indicator light sub-circuit according to an embodiment of the present application.

Reference numerals:

a first capacitor 110; a second capacitor 120; a transient suppression diode 130; a schottky diode 140; a fourth capacitor 150; a third capacitor 160; a first resistor 170; a switching unit 180; a second resistor 190; a fifth capacitor 200; a third resistor 210; a fourth resistor 220; a fifth resistor 230; a sixth resistor 240; a sixth capacitance 250; a seventh resistor 260; a seventh capacitor 270; an eighth capacitor 280; a first LED lamp 290; a second LED lamp 300; an eighth resistor 310; a ninth resistor 320; a tenth resistor 330; and an eleventh resistor.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.

In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 and 2, fig. 1 is a schematic circuit diagram of a capacitance changing sub-circuit according to an embodiment of the present application, and fig. 2 is a schematic pin diagram of an electronic fuse chip. The voltage rising rate adjusting circuit of the embodiment of the application comprises an electronic fuse chip and a capacitance changing sub-circuit, wherein the capacitance changing sub-circuit comprises a dial switch and at least two first capacitors 110, each input pin of the dial switch is grounded through one first capacitor 110, each output pin of the dial switch is connected with each other, and each output pin is connected with a soft start pin of the electronic fuse chip. According to the embodiment of the application, the dial switch is used for changing the capacity of the external capacitor of the soft start pin of the electronic fuse chip, so that the soft start time of the electronic fuse chip is changed, the rising rate of the output voltage of the electronic fuse chip can be regulated, and the circuit is simple, and the rising rate of the output voltage of the electronic fuse chip can be regulated by controlling the dial switch, so that the electronic fuse chip is convenient to use.

It can be appreciated that when the voltage rising rate adjusting circuit is used for the power-on and power-off test of the electronic device, the power input pin of the electronic fuse chip is connected to an external power source, the voltage output pin of the electronic fuse chip supplies power to the electronic device, and the dial switch is controlled to enable at least two first capacitors 110 to be combined to obtain the capacity required by the test, so that the soft start time of the electronic fuse chip is changed, and the rising rate of the output voltage of the electronic fuse chip can be adjusted.

It should be noted that, referring to fig. 1, the first capacitors 110 are provided with 5 first capacitors, P5 in fig. 1 is a dial switch, pins 1 to 5 of the dial switch are input pins, each input pin is grounded through one first capacitor 110, the capacities of each first capacitor 110 are different, the capacities of the 5 first capacitors 110 are 220nF, 100nF, 47nF, 22nF, 10nF, respectively, pins 6 to 10 of the dial switch are output pins, and the output pins are all connected together and are connected with an SS pin of the electronic fuse chip. Through control dial switch, can realize the various combinations of five first electric capacities 110 to change the capacity of the external electric capacity of soft start pin of electronic fuse chip, thereby change the soft start time of electronic fuse chip, consequently can adjust the rising rate of the output voltage of electronic fuse chip, and the circuit of this embodiment is simple, can adjust the rising rate of the output voltage of electronic fuse chip through control dial switch, convenient to use. It should be noted that, in the embodiment of the present application, the number of the first capacitors 110 is not specifically limited, and the capacity of each first capacitor 110 is not limited, and those skilled in the art may set according to actual requirements.

Note that, referring to fig. 2, in fig. 2, the VIN pin is a power input pin; the VOUT pin is a power supply output pin; the AVIN pin is an internal power supply input pin; GND is a ground pin; TIMER is a timing pin; the SS is a soft start pin, and the soft start time can be changed by changing the capacitance externally connected with the SS; EN is an input enable pin; LOADEN is a logic enable pin; enTM is asserted to LOADEN enable time set pin, during which LOADEN pin function is disabled. ISET is a programmable current limit setting pin; IMON is an output current monitoring pin; OV is a programmable over-voltage limit pin; FLTB is a fault indication pin; PG is a normal indication pin of the power supply. It should be noted that the electronic fuse chip shown in fig. 2 is only an example, and is not to be construed as limiting the present application.

It can be appreciated that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes a power input protection sub-circuit, and referring to fig. 3, fig. 3 is a schematic circuit diagram of the power input protection sub-circuit according to the embodiment of the present application. The power input protection subcircuit comprises a transient suppression diode 130 and a plurality of second capacitors 120, wherein the output end of the transient suppression diode 130 is connected with a power input pin of the electronic fuse chip, the input end of the transient suppression diode 130 is grounded, and the plurality of second capacitors 120 are connected with the transient suppression diode 130 in parallel. The voltage overshoot may be clamped by the transient suppression diode 130. The capacity of the second capacitors 120 is not limited in this application, and the capacities of the respective second capacitors 120 may be the same or different, and the number of the second capacitors 120 is not limited in this application.

It can be understood that the voltage rising rate adjusting circuit of the embodiment of the present application further includes a voltage output protection sub-circuit, referring to fig. 4, fig. 4 is a schematic circuit diagram of the voltage output protection sub-circuit of the embodiment of the present application, where the voltage output protection sub-circuit includes a schottky diode 140, a third capacitor 160 and a plurality of fourth capacitors 150, an output terminal of the schottky diode 140 is connected to an anode terminal of the third capacitor 160, an input terminal of the schottky diode 140 is connected to a cathode terminal of the third capacitor 160, and an input terminal of the schottky diode 140 is grounded; a number of fourth capacitors 150 are each connected in parallel with the schottky diode 140. The negative pressure can be prevented by the schottky diode 140. The capacity of the fourth capacitor 150 is not limited in this application, and the capacities of the fourth capacitors 150 may be the same or different, and the number of the fourth capacitors 150 is not limited in this application. In addition, a person skilled in the art can set the capacity of the third capacitor 160 according to the actual requirement.

It is understood that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes a switching sub-circuit, referring to fig. 5, fig. 5 is a circuit schematic diagram of the switching sub-circuit according to the embodiment of the present application, where the switching sub-circuit includes a first resistor 170, a switching unit 180, a second resistor 190, and a fifth capacitor 200, one end of the switching unit 180 is connected to a power input pin of the electronic fuse chip through the first resistor 170, the other end of the switching unit is connected to an input enable pin of the electronic fuse chip, and the other end of the switching unit is grounded through the second resistor 190, and the fifth capacitor 200 is connected in parallel to the second resistor 190. It should be noted that, the capacity of the fifth capacitor 200 is not limited in the embodiment of the present application, and a person skilled in the art may set the capacity of the fifth capacitor 200 according to actual needs.

It can be understood that the voltage rising rate adjusting circuit of the embodiment of the present application further includes an overvoltage setting subcircuit, referring to fig. 6, fig. 6 is a circuit schematic diagram of the overvoltage setting subcircuit of the embodiment of the present application, where the overvoltage setting subcircuit includes a third resistor 210 and a fourth resistor 220, one end of the third resistor 210 is connected to a power input pin of the electronic fuse chip, the other end of the third resistor 210 is connected to a programmable overvoltage limiting pin of the electronic fuse chip, and the programmable overvoltage limiting pin of the electronic fuse chip is grounded through the fourth resistor 220. By changing the resistance values of the third resistor 210 and the fourth resistor 220, different voltage values can be set for the electronic fuse chip.

It will be appreciated that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes a current limiting setting sub-circuit, referring to fig. 7, fig. 7 is a schematic diagram of the current limiting setting sub-circuit, where the current limiting setting sub-circuit includes a fifth resistor 230, and the programmable current limiting setting pin of the electronic fuse chip is grounded through the fifth resistor 230. By changing the resistance value of the fifth resistor 230, the current limit value of the electronic fuse chip can be changed.

It is to be understood that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes a current detecting sub-circuit, referring to fig. 8, fig. 8 is a schematic diagram of the current detecting sub-circuit, the current detecting sub-circuit includes a sixth resistor 240 and a sixth capacitor 250, and the output current monitoring pin of the electronic fuse chip is grounded through the sixth resistor 240, and the sixth capacitor 250 is connected in parallel with the sixth resistor 240. The voltage value of the sixth resistor 240 is inversely proportional to the output current of the electronic fuse chip, and thus the output current of the electronic fuse chip can be monitored by detecting the voltage value of the sixth resistor 240.

It will be appreciated that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes an on-chip electronic circuit, and referring to fig. 9, fig. 9 is a schematic diagram of the on-chip electronic circuit. The power supply electronic circuit inside the chip comprises a seventh resistor 260, a seventh capacitor 270 and an eighth capacitor 280, wherein one end of the seventh resistor 260 is connected with an internal power supply input pin of the electronic fuse chip, and the other end of the seventh resistor 260 is grounded through the seventh capacitor 270; the timing pin of the electronic fuse chip is grounded through an eighth capacitor 280. The LOADEN pin and the ENTM pin of the electronic fuse chip are grounded.

It can be understood that the voltage rising rate adjusting circuit according to the embodiment of the present application further includes an indicator light sub-circuit, referring to fig. 10, the indicator light sub-circuit includes a first LED lamp 290, a second LED lamp 300, an eighth resistor 310, a ninth resistor 320, a tenth resistor 330, and an eleventh resistor, one end of the eighth resistor 310 is connected to an external 5V power supply, the other end of the eighth resistor 310 is grounded through the ninth resistor 320, one end of the tenth resistor 330 is connected to a power supply normal indication pin of the electronic fuse chip, and the other end of the tenth resistor 330 is connected between the eighth resistor 310 and the ninth resistor 320; the output end of the first LED lamp 290 is connected with a power source normal indication pin of the electronic fuse chip, and the input end of the first LED lamp 290 is connected between the eighth resistor 310 and the ninth resistor 320; one end of the eleventh resistor is connected with the fault indication pin of the electronic fuse chip, and the other end of the eleventh resistor is connected between the eighth resistor 310 and the ninth resistor 320; the output end of the second LED lamp 300 is connected to the fault indication pin of the electronic fuse chip, and the input end of the second LED lamp 300 is connected between the eighth resistor 310 and the ninth resistor 320. When the electronic fuse chip works normally, the fault indication pin and the power source normal indication pin are pulled up to a high level, and the first LED lamp 290 and the second LED lamp 300 are not lightened; when the first LED lamp 290 is on, the abnormal power supply voltage of the electronic fuse chip is indicated, and the normal power supply indicating pin is pulled to the ground; when the second LED lamp 300 is on, an overcurrent or short circuit condition of the electronic fuse chip is indicated, and the fault indication pin is pulled to ground.

The values of the first resistor 170, the second resistor 190, the third resistor 210, the fourth resistor 220, the fifth resistor 230, the sixth resistor 240, the seventh resistor 260, the eighth resistor 310, the ninth resistor 320, the tenth resistor 330, and the eleventh resistor may be set by those skilled in the art according to actual needs, and the present application is not limited thereto.

In a second aspect, embodiments of the present application provide a power supply patch panel, including a voltage rise rate adjustment circuit as in any of the embodiments of the first aspect.

The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A voltage rise rate adjustment circuit, comprising:

an electronic fuse chip;

the capacitance changing sub-circuit comprises a dial switch and at least two first capacitors, wherein each input pin of the dial switch is grounded through one first capacitor, each output pin of the dial switch is connected with each other, and each output pin is connected with a soft start pin of the electronic fuse chip.

2. The voltage rise rate adjustment circuit of claim 1, further comprising:

the power input protection sub-circuit comprises a transient suppression diode and a plurality of second capacitors, wherein the output end of the transient suppression diode is connected with a power input pin of the electronic fuse chip, the input end of the transient suppression diode is grounded, and the second capacitors are all connected with the transient suppression diode in parallel.

3. The voltage rise rate adjustment circuit of claim 1, further comprising:

the voltage output protection sub-circuit comprises a Schottky diode, a third capacitor and a plurality of fourth capacitors, wherein the output end of the Schottky diode is connected with the positive electrode end of the third capacitor, the input end of the Schottky diode is connected with the negative electrode end of the third capacitor, and the input end of the Schottky diode is grounded; and a plurality of fourth capacitors are connected with the Schottky diode in parallel.

4. The voltage rise rate adjustment circuit of claim 1, further comprising:

the switch sub-circuit comprises a first resistor, a switch unit, a second resistor and a fifth capacitor, wherein one end of the switch unit is connected with a power input pin of the electronic fuse chip through the first resistor, the other end of the switch unit is connected with an input enabling pin of the electronic fuse chip, the other end of the switch unit is grounded through the second resistor, and the fifth capacitor is connected with the second resistor in parallel.

5. The voltage rise rate adjustment circuit of claim 1, further comprising:

the electronic fuse comprises an electronic fuse chip, and is characterized by comprising an overvoltage setting sub-circuit, wherein the overvoltage setting sub-circuit comprises a third resistor and a fourth resistor, one end of the third resistor is connected with a power input pin of the electronic fuse chip, the other end of the third resistor is connected with a programmable overvoltage limiting pin of the electronic fuse chip, and the programmable overvoltage limiting pin of the electronic fuse chip is grounded through the fourth resistor.

6. The voltage rise rate adjustment circuit of claim 1, further comprising:

the current limiting setting sub-circuit comprises a fifth resistor, and a programmable current limiting setting pin of the electronic fuse chip is grounded through the fifth resistor.

7. The voltage rise rate adjustment circuit of claim 1, further comprising:

the current detection sub-circuit comprises a sixth resistor and a sixth capacitor, wherein an output current monitoring pin of the electronic fuse chip is grounded through the sixth resistor, and the sixth capacitor is connected with the sixth resistor in parallel.

8. The voltage rise rate adjustment circuit of claim 1, further comprising:

the electronic fuse comprises an internal power supply circuit in a chip, wherein the internal power supply circuit in the chip comprises a seventh resistor, a seventh capacitor and an eighth capacitor, one end of the seventh resistor is connected with an internal power supply input pin of the electronic fuse chip, and the other end of the seventh resistor is grounded through the seventh capacitor; and the timing pin of the electronic fuse chip is grounded through the eighth capacitor.

9. The voltage rise rate adjustment circuit of claim 1, further comprising:

the electronic fuse comprises an indication lamp sub-circuit, a first LED lamp, a second LED lamp, an eighth resistor, a ninth resistor, a tenth resistor and an eleventh resistor, wherein one end of the eighth resistor is connected with an external 5V power supply, the other end of the eighth resistor is grounded through the ninth resistor, one end of the tenth resistor is connected with a normal power supply indication pin of the electronic fuse chip, and the other end of the tenth resistor is connected between the eighth resistor and the ninth resistor; the output end of the first LED lamp is connected with a power source normal indication pin of the electronic fuse chip, and the input end of the first LED lamp is connected between the eighth resistor and the ninth resistor; one end of the eleventh resistor is connected with the fault indication pin of the electronic fuse chip, and the other end of the eleventh resistor is connected between the eighth resistor and the ninth resistor; the output end of the second LED lamp is connected with the fault indication pin of the electronic fuse chip, and the input end of the second LED lamp is connected between the eighth resistor and the ninth resistor.

10. A power supply adapter board comprising a voltage rise rate adjustment circuit as claimed in any one of claims 1 to 9.

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