Novel remote control activation start-stop circuit

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By introducing an isolated line composed of optocoupler and diode into the battery activation start-stop circuit, the problem of traditional battery activation start-stop circuit being easily disturbed and damaged by interference in electrostatic experiments is solved, and the comparator input port is isolated is realized, and the reliability of battery start-stop is improved.

CN223274094UActive Publication Date: 2025-08-26WUXI OU RUIJIE ELECTRONIC TECH CO LTD

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Patent Information

Application Number: CN202422565839.1
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-10-23
Publication Date: 2025-08-26
Estimated Expiration: 2034-10-23

AI Technical Summary

Technical Problem

The traditional battery activation start-stop circuit is susceptible to interference and damage to the op amp in special occasions such as electrostatic experiments. The existing technology cannot effectively avoid damage caused by the direct output of the comparator input pin.

Method used

The comparator line is used to separate the forward and reverse input external isolation lines, and the input port is isolated through the optocoupler, and the isolation line composed of the optocoupler and diode avoids direct output, and the start-stop function is achieved in combination with the on-off characteristics of the optocoupler.

Benefits of technology

Improves the reliability of battery activation start-stop in extreme cases, and avoids damage caused by direct external output of the comparator input pin.

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Abstract

The utility model discloses a start-stop circuit, belongs to the technical field of switching power supplies, and particularly relates to a novel remote control activation start-stop circuit, which comprises a comparator circuit, a forward input external isolation circuit and a reverse input external isolation circuit, the forward input external isolation circuit and the reverse input external isolation circuit are respectively connected with a forward input port and a reverse input port of the comparator circuit so as to realize external isolation of the forward input port and the reverse input port of the comparator; the comparator circuit is composed of a comparator A9A; the positive input external isolation circuit is composed of a first optical coupler PC58; according to the utility model, a novel remote control activation start-stop technology is provided, so that the input pin position of the comparator is prevented from being directly output to the outside, and such defects are completely eradicated; according to the utility model, the reliability of battery activation start-stop under extreme conditions is improved.

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Description

Technical Field

[0001] The utility model discloses a start-stop circuit, belongs to the technical field of switch power supplies, and particularly relates to a novel remote-controlled activated start-stop circuit. Background Art

[0002] The traditional battery activation start-stop circuit directly operates the positive input port or the negative input port of the comparator to short-circuit to the ground to achieve high and low level flipping, thereby realizing the activation start-stop function. In order to realize the activation start-stop action, the positive and negative input terminals of the comparator need to be directly output to the outside. In some special occasions or special experimental processes, such as electrostatic experiments, excessive interference often damages the op amp. This patent provides a new remote control activation start-stop technology to avoid the direct external output of the comparator input pin, thus eliminating such defects. Utility Model Content

[0003] Purpose of the utility model: to provide a new remote control activation start-stop circuit to solve the above-mentioned problems.

[0004] Technical solution: A novel remote control activation start-stop circuit, the start-stop circuit comprising: a comparator circuit, a positive input external isolation circuit and a reverse input external isolation circuit;

[0005] The forward input external isolation circuit and the reverse input external isolation circuit are respectively connected to the positive and negative input ports of the comparator circuit to achieve external isolation of the positive and negative input ports of the comparator;

[0006] The comparator circuit is composed of a comparator A9A; the positive input external isolation circuit is composed of a first optocoupler PC58; and the reverse input external isolation circuit is composed of a second optocoupler PC59.

[0007] In a further embodiment, the comparator circuit includes: a comparator A9A, a first resistor R98, a second resistor R99, a third resistor R112, a fourth resistor R113, a fifth resistor R114, and a first diode D24;

[0008] The positive input terminal pin 3 of the comparator A9A is simultaneously connected to pin 1 of the first resistor R98, pin 2 of the third resistor R112, and pin 2 of the fifth resistor R114, pin 2 of the first resistor R98 is connected to the positive electrode of the power supply, and pin 1 of the third resistor R112 is connected to the negative electrode of the power supply. The negative input terminal pin 2 of the comparator A9A is simultaneously connected to pin 1 of the second resistor R99 and pin 2 of the fourth resistor R113, pin 2 of the second resistor R99 is connected to the positive electrode of the power supply, and pin 1 of the fourth resistor R113 is connected to the negative electrode of the power supply. The positive power supply terminal pin 8 of the comparator A9A is connected to the positive electrode of the power supply, and the negative power supply terminal pin 4 of the comparator A9A is connected to the negative electrode of the power supply. Pin 1 of the fifth resistor R114 is connected to the positive electrode of the first diode D24, and the output terminal of the comparator A9A is connected to the negative electrode of the first diode D24.

[0009] In a further embodiment, the forward input external isolation circuit includes a first optocoupler PC58, a sixth resistor R84, a second diode D20, and a seventh resistor R86;

[0010] The first optocoupler PC58 is composed of a light emitting diode PC58A and a phototransistor PC58B;

[0011] Pin 1 of the light-emitting diode PC58A is connected to pin 1 of the sixth resistor R84, pin 2 of the light-emitting diode PC58A is connected to the positive electrode of the second diode D20, pin 2 of the sixth resistor R84 is connected to the positive electrode of the power supply, the negative electrode of the second diode D20 is connected to the activation start pin HK, pin 4 of the phototransistor PC58B is connected to pin 1 of the seventh resistor R86, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the seventh resistor R86 is connected to pin 3 of the positive input terminal of the comparator A9A.

[0012] In a further embodiment, the reverse input external isolation circuit includes a second optocoupler PC59, an eighth resistor R85, a third diode D21, and a ninth resistor R87;

[0013] The second optical coupler PC59 is composed of a light emitting diode PC59A and a phototransistor PC59B;

[0014] Pin 1 of the light-emitting diode PC59A is connected to pin 1 of the eighth resistor R85, pin 2 of the light-emitting diode PC59A is connected to the positive electrode of the third diode D21, pin 2 of the eighth resistor R85 is connected to the positive electrode of the power supply, the negative electrode of the third diode D21 is connected to the activation stop pin HG, pin 4 of the phototransistor PC59B is connected to pin 1 of the ninth resistor R87, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the ninth resistor R87 is connected to pin 2 of the reverse input terminal of the comparator A9A.

[0015] In a further embodiment, the output end of the comparator A9A is connected to an output external isolation circuit, and the external isolation circuit includes a third optocoupler PC60 and a tenth resistor R82; the third optocoupler PC60 is composed of a light emitting diode PC60A and a phototransistor PC60B;

[0016] Pin 1 of the output end of the comparator A9A is connected to pin 2 of the light emitting diode PC60A, pin 1 of the light emitting diode PC60A is connected to pin 1 of the tenth resistor R82, and pin 2 of the tenth resistor R82 is connected to the positive pole of the power supply.

[0017] In a further embodiment, the comparator A9A is a LM293.

[0018] In a further embodiment, the model of the first diode D24 is LL4148.

[0019] In a further embodiment, the second diode D20 and the third diode D214 are of type US1ML.

[0020] Beneficial effects: The utility model proposes a new remote control activation start-stop technology, which avoids the direct external output of the input pin of the comparator and eliminates such defects; the utility model improves the reliability of battery activation start-stop under extreme conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] A new remote control activation start-stop circuit, such as Figure 1 As shown, it includes: a comparator circuit, a positive input external isolation circuit and a reverse input external isolation circuit;

[0026] The forward input external isolation circuit and the reverse input external isolation circuit are respectively connected to the positive and negative input ports of the comparator circuit to achieve external isolation of the positive and negative input ports of the comparator;

[0027] The comparator circuit is composed of a comparator A9A; the positive input external isolation circuit is composed of a first optocoupler PC58; and the reverse input external isolation circuit is composed of a second optocoupler PC59.

[0028] In one embodiment, Figure 1 As shown, the comparator circuit includes: a comparator A9A, a first resistor R98, a second resistor R99, a third resistor R112, a fourth resistor R113, a fifth resistor R114, and a first diode D24;

[0029] The positive input terminal pin 3 of the comparator A9A is simultaneously connected to pin 1 of the first resistor R98, pin 2 of the third resistor R112, and pin 2 of the fifth resistor R114, pin 2 of the first resistor R98 is connected to the positive electrode of the power supply, and pin 1 of the third resistor R112 is connected to the negative electrode of the power supply. The negative input terminal pin 2 of the comparator A9A is simultaneously connected to pin 1 of the second resistor R99 and pin 2 of the fourth resistor R113, pin 2 of the second resistor R99 is connected to the positive electrode of the power supply, and pin 1 of the fourth resistor R113 is connected to the negative electrode of the power supply. The positive power supply terminal pin 8 of the comparator A9A is connected to the positive electrode of the power supply, and the negative power supply terminal pin 4 of the comparator A9A is connected to the negative electrode of the power supply. Pin 1 of the fifth resistor R114 is connected to the positive electrode of the first diode D24, and the output terminal of the comparator A9A is connected to the negative electrode of the first diode D24.

[0030] In one embodiment, Figure 1 As shown, the positive input external isolation circuit includes a first optocoupler PC58, a sixth resistor R84, a second diode D20, and a seventh resistor R86;

[0031] The first optocoupler PC58 is composed of a light emitting diode PC58A and a phototransistor PC58B;

[0032] Pin 1 of the light-emitting diode PC58A is connected to pin 1 of the sixth resistor R84, pin 2 of the light-emitting diode PC58A is connected to the positive electrode of the second diode D20, pin 2 of the sixth resistor R84 is connected to the positive electrode of the power supply, the negative electrode of the second diode D20 is connected to the activation start pin HK, pin 4 of the phototransistor PC58B is connected to pin 1 of the seventh resistor R86, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the seventh resistor R86 is connected to pin 3 of the positive input terminal of the comparator A9A.

[0033] In one embodiment, Figure 1 As shown, the reverse input external isolation circuit includes a second optocoupler PC59, an eighth resistor R85, a third diode D21, and a ninth resistor R87;

[0034] The second optical coupler PC59 is composed of a light emitting diode PC59A and a phototransistor PC59B;

[0035] Pin 1 of the light-emitting diode PC59A is connected to pin 1 of the eighth resistor R85, pin 2 of the light-emitting diode PC59A is connected to the positive electrode of the third diode D21, pin 2 of the eighth resistor R85 is connected to the positive electrode of the power supply, the negative electrode of the third diode D21 is connected to the activation stop pin HG, pin 4 of the phototransistor PC59B is connected to pin 1 of the ninth resistor R87, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the ninth resistor R87 is connected to pin 2 of the reverse input terminal of the comparator A9A.

[0036] In one embodiment, Figure 1 As shown, the output end of the comparator A9A is connected to an output external isolation circuit, and the external isolation circuit includes a third optocoupler PC60 and a tenth resistor R82; the third optocoupler PC60 is composed of a light emitting diode PC60A and a phototransistor PC60B;

[0037] Pin 1 of the output end of the comparator A9A is connected to pin 2 of the light emitting diode PC60A, pin 1 of the light emitting diode PC60A is connected to pin 1 of the tenth resistor R82, and pin 2 of the tenth resistor R82 is connected to the positive pole of the power supply.

[0038] Working principle: In this circuit, the first optocoupler PC58 and the second optocoupler PC59 are used to isolate the positive and negative input ports of the comparator A9A from the outside. When HK is activated, the start pin is short-circuited to the negative electrode of the power supply V-, and the positive electrode of the power supply V+ passes through the sixth resistor R84. The first optocoupler PC58 and the second diode D20 form a loop with the negative electrode of the power supply V-. At this time, the light-emitting diode PC58A is turned on. According to the characteristics of the optocoupler, after the light-emitting diode PC58A is turned on, the phototransistor PC58B will also be turned on. After the first optocoupler PC58 is turned on, the impedance is approximately 0 ohms. At this time, the voltage of the positive input port of the comparator A9A is obtained by dividing the first resistor R98 and the third resistor R112 / the seventh resistor R86, and the voltage of the reverse input port of the comparator A9A is obtained by dividing the second resistor R99 and the fourth resistor R113. The voltage of the positive input port is less than the voltage of the reverse port. According to the characteristics of the comparator, it can be seen that at this time, the output port of the comparator A9A is low level, and the positive electrode of the power supply V+ passes through The tenth resistor R82, the light-emitting diode PC60A in the third optocoupler PC60, and the output port of the comparator A9A form a loop. The light-emitting diode PC60A is turned on, and the phototransistor PC60B serves as the enable port for the switching power supply input PWM chip. When the phototransistor PC60B turns on, the PWM chip turns off, and the switching power supply stops transmitting energy. The switching power supply PWM chip is not restricted here, and the circuit is not shown. When the comparator output is low, the first diode D24 in the circuit also turns on. After conduction, the fifth resistor R114 is connected in parallel with the third resistor R112 / seventh resistor R86, further reducing the voltage at the positive input port. When the activation start pin HK stops shorting the power supply negative terminal V-, the fifth resistor R114 and the first diode D24 perform the activation hold function. This completes the battery activation function when the activation start pin HK is shorted to the power supply negative terminal V-. Similarly, the battery activation function is deactivated when the activation hearing pin HG is shorted to the power supply negative terminal V-.

[0039] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A new remote control activation start-stop circuit, characterized in that: The start-stop circuit includes: a comparator circuit, a positive input external isolation circuit and a reverse input external isolation circuit; The forward input external isolation circuit and the reverse input external isolation circuit are respectively connected to the positive and negative input ports of the comparator circuit to achieve external isolation of the positive and negative input ports of the comparator; The comparator circuit is composed of a comparator A9A; the positive input external isolation circuit is composed of a first optocoupler PC58; and the reverse input external isolation circuit is composed of a second optocoupler PC59.

2. A novel remote control activation start-stop circuit according to claim 1, characterized in that: The comparator circuit includes: a comparator A9A, a first resistor R98, a second resistor R99, a third resistor R112, a fourth resistor R113, a fifth resistor R114, and a first diode D24; The positive input terminal pin 3 of the comparator A9A is simultaneously connected to pin 1 of the first resistor R98, pin 2 of the third resistor R112, and pin 2 of the fifth resistor R114, pin 2 of the first resistor R98 is connected to the positive electrode of the power supply, and pin 1 of the third resistor R112 is connected to the negative electrode of the power supply. The negative input terminal pin 2 of the comparator A9A is simultaneously connected to pin 1 of the second resistor R99 and pin 2 of the fourth resistor R113, pin 2 of the second resistor R99 is connected to the positive electrode of the power supply, and pin 1 of the fourth resistor R113 is connected to the negative electrode of the power supply. The positive power supply terminal pin 8 of the comparator A9A is connected to the positive electrode of the power supply, and the negative power supply terminal pin 4 of the comparator A9A is connected to the negative electrode of the power supply. Pin 1 of the fifth resistor R114 is connected to the positive electrode of the first diode D24, and the output terminal of the comparator A9A is connected to the negative electrode of the first diode D24.

3. A novel remote control activation start-stop circuit according to claim 2, characterized in that: The forward input external isolation circuit includes a first optocoupler PC58, a sixth resistor R84, a second diode D20, and a seventh resistor R86; The first optocoupler PC58 is composed of a light emitting diode PC58A and a phototransistor PC58B; Pin 1 of the light-emitting diode PC58A is connected to pin 1 of the sixth resistor R84, pin 2 of the light-emitting diode PC58A is connected to the positive electrode of the second diode D20, pin 2 of the sixth resistor R84 is connected to the positive electrode of the power supply, the negative electrode of the second diode D20 is connected to the activation start pin HK, pin 4 of the phototransistor PC58B is connected to pin 1 of the seventh resistor R86, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the seventh resistor R86 is connected to pin 3 of the positive input terminal of the comparator A9A.

4. A novel remote control activation start-stop circuit according to claim 2, characterized in that: The reverse input external isolation circuit includes a second optocoupler PC59, an eighth resistor R85, a third diode D21, and a ninth resistor R87; The second optical coupler PC59 is composed of a light emitting diode PC59A and a phototransistor PC59B; Pin 1 of the light-emitting diode PC59A is connected to pin 1 of the eighth resistor R85, pin 2 of the light-emitting diode PC59A is connected to the positive electrode of the third diode D21, pin 2 of the eighth resistor R85 is connected to the positive electrode of the power supply, the negative electrode of the third diode D21 is connected to the activation stop pin HG, pin 4 of the phototransistor PC59B is connected to pin 1 of the ninth resistor R87, pin 3 of the phototransistor PC58B is connected to the negative electrode of the power supply, and pin 2 of the ninth resistor R87 is connected to pin 2 of the reverse input terminal of the comparator A9A.

5. A novel remote control activation start-stop circuit according to claim 2, characterized in that: The output end of the comparator A9A is connected to an output external isolation circuit, which includes a third optocoupler PC60 and a tenth resistor R82; the third optocoupler PC60 is composed of a light emitting diode PC60A and a phototransistor PC60B; Pin 1 of the output end of the comparator A9A is connected to pin 2 of the light emitting diode PC60A, pin 1 of the light emitting diode PC60A is connected to pin 1 of the tenth resistor R82, and pin 2 of the tenth resistor R82 is connected to the positive pole of the power supply.