A compact thyristor and diode integrated element

Abstract

This utility model discloses a compact integrated component of a thyristor and a diode, comprising: a rectifier diode D1 with its positive terminal connected to the live wire, a rectifier diode D2 with its negative terminal connected to the neutral wire, the negative terminal of rectifier diode D1 connected to the anode of thyristor Q1, the cathode of thyristor Q1 connected to the positive terminal of rectifier diode D2, and the control terminal of thyristor Q1 connected to the negative terminal of rectifier diode D2; a diode D3 with its negative terminal connected to the anode of thyristor Q1 and capacitor C1, and its positive terminal connected to the cathode of thyristor Q1; the primary winding of step-up transformer T1 connected to capacitor C1 and diode D3; and rectifier diodes D1 and D2 and thyristor Q1 packaged as an integrated component in SOT143 style. Thus, the previously separately packaged rectifier diodes and thyristors are unified into a single package, and the wiring method of the current-limiting resistor is modified accordingly, significantly reducing the size of the circuit board, which is beneficial for developing compact products and reducing the difficulty of production and assembly.

Description

Technical Field

[0001] This utility model relates to the field of circuit design technology, and in particular to a compact integrated silicon controlled rectifier and diode device. Background Technology

[0002] Most existing ion generators use negative high voltage applied to a discharge needle to generate a strong electric field based on the tip effect to ionize the air. During the process, a large number of free electrons are released and can be captured by oxygen molecules in the air, thereby generating negative oxygen ions.

[0003] As ion generators are increasingly used in small household products such as hair dryers, the requirements for their size are also increasing. Currently, most of the components on the circuit board of ion generators are individually packaged, and to facilitate soldering, the components are kept at a certain physical distance. This makes the board size of the ion generator relatively large, making it difficult to meet the size requirements of compact products. Utility Model Content

[0004] This embodiment discloses a compact integrated silicon controlled rectifier and diode device, specifically including: The positive terminal of the rectifier diode D1 is connected to the live wire via the current-limiting resistor R1, and the negative terminal of the rectifier diode D2 is connected to the neutral wire via the current-limiting resistor R2, so as to output unidirectional pulsating DC power. The negative terminal of the rectifier diode D1 is connected to the anode of the thyristor Q1, the cathode of the thyristor Q1 is connected to the positive terminal of the rectifier diode D2, and the control terminal of the thyristor Q1 is connected to the negative terminal of the rectifier diode D2. The negative terminal of diode D3 is connected to the anode of the thyristor Q1 and the capacitor C1, and the positive terminal of diode D3 is connected to the cathode of the thyristor Q1 to form an oscillation signal; The primary winding of the step-up transformer T1 is connected to the positive terminals of the capacitor C1 and the diode D3 respectively, so as to generate and output high voltage in the secondary winding. The rectifier diodes D1 and D2 and the thyristor Q1 are packaged as SOT143 integrated components.

[0005] As an optional implementation, the integrated element has a length of no more than 3 mm, a width of no more than 1.4 mm, and a height of no more than 1.2 mm.

[0006] As an optional implementation, a resistor R3 is fitted between the negative terminal of the rectifier diode D1 and the negative terminal of the rectifier diode D2.

[0007] As an optional implementation, the wires at both ends of the resistor R3 are routed outside the horizontal range of the integrated element.

[0008] As an optional implementation, the positive terminal of the rectifier diode D1 is the first pin of the integrated element, the negative terminal of the rectifier diode D2 is the second pin of the integrated element, the positive terminal of the rectifier diode D2 is the third pin of the integrated element, and the negative terminal of the rectifier diode D1 is the fourth pin of the integrated element.

[0009] As an optional implementation, the current-limiting resistors R1 and R2 limit the current of the input AC power and, together with the rectifier diode D1, perform half-wave rectification of the AC power to output the unidirectional pulsating DC power.

[0010] As an optional implementation, the thyristor Q1 and the capacitor C1 are driven by the unidirectional pulsating DC current to perform periodic on / off switching to generate the oscillation signal.

[0011] As an optional implementation, a resistor R4 is installed between the primary winding and the secondary winding of the step-up transformer T1; One end of the secondary winding is connected to the negative terminal of the high-voltage silicon stack D4, and the other end is connected to the positive terminal of the high-voltage silicon stack D4 via capacitor C2.

[0012] As an optional implementation, the high-voltage silicon stack D4 obtains the high-voltage electricity, and its positive electrode outputs a DC negative high voltage through resistors R5 and R6.

[0013] As an alternative implementation, the DC negative high voltage is supplied to a tip device to ionize gas molecules based on the tip effect.

[0014] Compared with the prior art, this embodiment has the following beneficial effects: In this embodiment, the previously independently packaged rectifier diode and thyristor are packaged together, and the wiring method of the current limiting resistor is modified accordingly, which greatly reduces the size of the circuit board, which is conducive to the development of compact products and reduces the difficulty of production and assembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the circuit principle of a compact thyristor and diode integrated device disclosed in this embodiment; Figure 2 This is a schematic diagram of the circuit principle of a conventional ion generator circuit board disclosed in this embodiment. Detailed Implementation

[0017] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Please see Figures 1-2 This embodiment discloses a compact integrated silicon controlled rectifier and diode device, comprising: The positive terminal of the rectifier diode D1 is connected to the live wire via the current-limiting resistor R1, and the negative terminal of the rectifier diode D2 is connected to the neutral wire via the current-limiting resistor R2, so as to output unidirectional pulsating DC power. The negative terminal of rectifier diode D1 is connected to the anode of thyristor Q1, the cathode of thyristor Q1 is connected to the positive terminal of rectifier diode D2, and the control terminal of thyristor Q1 is connected to the negative terminal of rectifier diode D2. The negative terminal of diode D3 is connected to the anode of thyristor Q1 and capacitor C1, and the positive terminal of diode D3 is connected to the cathode of thyristor Q1 to form an oscillation signal. The primary winding of step-up transformer T1 is connected to the positive terminals of capacitor C1 and diode D3 respectively, so as to generate and output high voltage in the secondary winding. The rectifier diodes D1 and D2 and the thyristor Q1 are packaged as SOT143 integrated components.

[0019] Typically, rectifier diodes connected to the live wire, rectifier diodes connected to the neutral wire, and thyristors are all independently packaged components. In order to facilitate soldering and avoid damage to components assembled earlier in later processes, sufficient physical distance must be left between each component. This makes the overall size of the board larger and unsuitable for compact products.

[0020] In this embodiment, by packaging rectifier diode D1, rectifier diode D2 and thyristor Q1 into SOT143-style integrated components, there is no need to reserve processing and assembly gaps, which effectively reduces the size of the board material.

[0021] As an optional implementation, the integrated component has a length of no more than 3mm, a width of no more than 1.4mm, and a height of no more than 1.2mm.

[0022] As an optional implementation, a resistor R3 is fitted between the negative terminals of rectifier diode D1 and rectifier diode D2.

[0023] As an alternative implementation, the wires across resistor R3 are routed outside the horizontal range of the integrated component.

[0024] Here, by adjusting the assembly position and wiring method of components such as resistors, mounting areas are reserved on the board for integrated components.

[0025] like Figure 2 As shown, in the existing ion generator circuit, the input terminal first undergoes half-wave rectification through rectifier diode D1, and then current is limited by current-limiting resistors R1 and R2.

[0026] In this embodiment, current is limited by current-limiting resistors R1 and R2, and half-wave rectification is performed by rectifier diode D1. Based on this, while ensuring that the electrical performance remains unchanged, the board product with a significantly reduced size is formed by reconstructing the component layout area and wiring connection relationship around the integrated component design.

[0027] As an optional implementation, the positive terminal of rectifier diode D1 is the first pin of the integrated device, the negative terminal of rectifier diode D2 is the second pin of the integrated device, the positive terminal of rectifier diode D2 is the third pin of the integrated device, and the negative terminal of rectifier diode D1 is the fourth pin of the integrated device.

[0028] As an optional implementation, current-limiting resistors R1 and R2 limit the input AC current, and together with rectifier diode D1, perform half-wave rectification of the AC current to output unidirectional pulsating DC current.

[0029] As an optional implementation, the thyristor Q1 and capacitor C1 are driven by unidirectional pulsating DC current to perform periodic on / off switching to generate an oscillation signal.

[0030] As an optional implementation, a resistor R4 is installed between the primary winding and the secondary winding of the step-up transformer T1; One end of the secondary winding is connected to the negative terminal of the high-voltage silicon stack D4, and the other end is connected to the positive terminal of the high-voltage silicon stack D4 via capacitor C2.

[0031] As an optional implementation, the high-voltage silicon stack D4 obtains high-voltage electricity, and its positive terminal outputs DC negative high voltage through resistors R5 and R6.

[0032] As an alternative implementation, a negative DC high voltage is supplied to the tip device to ionize gas molecules based on the tip effect.

[0033] Compared with the prior art, this embodiment has the following beneficial effects: In this embodiment, the previously independently packaged rectifier diode and thyristor are packaged together, and the wiring method of the current limiting resistor is modified accordingly, which greatly reduces the size of the circuit board, which is conducive to the development of compact products and reduces the difficulty of production and assembly.

Claims

1. A compact integrated device combining a thyristor and a diode, characterized in that, include: The positive terminal of the rectifier diode D1 is connected to the live wire via the current-limiting resistor R1, and the negative terminal of the rectifier diode D2 is connected to the neutral wire via the current-limiting resistor R2, so as to output unidirectional pulsating DC power. The negative terminal of the rectifier diode D1 is connected to the anode of the thyristor Q1, the cathode of the thyristor Q1 is connected to the positive terminal of the rectifier diode D2, and the control terminal of the thyristor Q1 is connected to the negative terminal of the rectifier diode D2. The negative terminal of diode D3 is connected to the anode of the thyristor Q1 and the capacitor C1, and the positive terminal of diode D3 is connected to the cathode of the thyristor Q1 to form an oscillation signal; The primary winding of the step-up transformer T1 is connected to the positive terminals of the capacitor C1 and the diode D3 respectively, so as to generate and output high voltage in the secondary winding. The rectifier diodes D1 and D2 and the thyristor Q1 are packaged as SOT143 integrated components.

2. A compact thyristor and diode integrated component according to claim 1, characterized in that include: The integrated element has a length of no more than 3mm, a width of no more than 1.4mm, and a height of no more than 1.2mm.

3. A compact thyristor and diode integrated component according to claim 1, characterized in that, include: A resistor R3 is assembled between the negative terminal of the rectifier diode D1 and the negative terminal of the rectifier diode D2.

4. A compact thyristor and diode integrated component according to claim 3, characterized in that include: The wires at both ends of the resistor R3 are laid outside the horizontal range of the integrated element.

5. A compact thyristor and diode integrated component according to claim 4, characterized in that include: The positive terminal of the rectifier diode D1 is the first pin of the integrated element, the negative terminal of the rectifier diode D2 is the second pin of the integrated element, the positive terminal of the rectifier diode D2 is the third pin of the integrated element, and the negative terminal of the rectifier diode D1 is the fourth pin of the integrated element.

6. A compact thyristor and diode integrated component according to claim 1, characterized in that, include: The current-limiting resistors R1 and R2 limit the input AC current and, together with the rectifier diode D1, perform half-wave rectification of the AC current to output the unidirectional pulsating DC current.

7. A compact thyristor and diode integrated component according to claim 6, characterized in that include: The thyristor Q1 and the capacitor C1 are driven by the unidirectional pulsating DC current to perform periodic on / off switching to generate the oscillation signal.

8. A compact thyristor and diode integrated device according to claim 7, characterized in that, include: A resistor R4 is installed between the primary winding and the secondary winding of the step-up transformer T1. One end of the secondary winding is connected to the negative terminal of the high-voltage silicon stack D4, and the other end is connected to the positive terminal of the high-voltage silicon stack D4 via capacitor C2.

9. A compact integrated silicon controlled rectifier and diode device according to claim 8, characterized in that, include: The high-voltage silicon stack D4 obtains the high-voltage electricity, and its positive electrode outputs a DC negative high voltage through resistors R5 and R6.

10. A compact thyristor and diode integrated device according to claim 9, characterized in that, include: The DC negative high voltage is supplied to the tip device to ionize gas molecules based on the tip effect.

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