A thyristor-based input / output controller

Abstract

The utility model relates to input / output controller technical field discloses an input / output controller based on thyristor, including multiple thyristor module, and the thyristor module includes triode switch Q1, input / output protection module, gate pulse trigger module and gate protection module, input / output protection module connects to triode switch Q1's base and collector respectively, gate pulse trigger module connects to triode Q1's emitter and collector respectively, and gate protection module is connected to gate pulse module, and each thyristor module is mutually connected in series and forms controller switch, and the controller switch is formed by the series connection setting multiple thyristor modules, need not to set up peripheral heating circuit, makes the controller switch to have extremely low heat loss, can use stably under the vibration and rotation environment, and lower cost.

Description

Technical Field

[0001] This utility model relates to the field of input / output controller technology, and in particular to an input / output controller based on a silicon controlled rectifier (SCR). Background Technology

[0002] During the charging process of the high voltage modulator of the medical accelerator, the charging voltage on the PFN needs to be adjusted. Therefore, it needs to be adjusted by the input / output controller. When the charging voltage on the PFN reaches the set requirement, the input / output controller is triggered to open the switch to discharge 12KV, thereby controlling the voltage on the PFN.

[0003] Traditional linear high voltage modulators often use hydrogen thyristors as input / output controllers. Hydrogen thyristors are gas-filled transistors that generate hydrogen gas by heating the filament during operation. This requires external circuitry to power the filament for heating, but this process results in significant heat loss. Furthermore, it affects stability in environments with vibration and rotation, and is relatively expensive. Therefore, improvements are needed. Utility Model Content

[0004] The main objective of this invention is to propose an input / output controller based on a silicon controlled rectifier (SCR), which aims to provide an input / output controller with low heat loss and no need for external heating circuitry.

[0005] To achieve the above objectives, this utility model proposes an input / output controller based on thyristors, comprising multiple thyristor modules. Each thyristor module includes a transistor switch Q1, an input / output protection module, a gate pulse triggering module, and a gate protection module. The input / output protection module is connected to the base and collector of the transistor switch Q1, respectively. The gate pulse triggering module is connected to the emitter and collector of the transistor Q1, respectively. The gate protection module is connected in parallel to the gate pulse module. The thyristor modules are connected in series to form a controller switch.

[0006] Specifically, the input / output protection module includes a capacitor C1, a resistor R1, and a bidirectional transient suppression diode D1, which are connected in parallel.

[0007] Specifically, the gate pulse triggering module includes a current transformer, which is made of an inductor, and the two ends of the inductor are respectively connected to the emitter and collector of the transistor switch Q1.

[0008] Specifically, the gate protection module includes a resistor R13, a capacitor C13, and a bidirectional transient suppression diode D13. The resistor R13 and the capacitor C13 are connected in parallel at the emitter of the transistor switch Q1, and the bidirectional transient suppression diode D13 is connected to the emitter and collector of the transistor switch Q1, respectively.

[0009] Specifically, the number of the silicon controlled rectifier modules is 24.

[0010] Specifically, the controller switch is formed by encapsulating multiple silicon controlled rectifier modules with epoxy resin.

[0011] This utility model's technical solution forms a controller switch by connecting multiple thyristor modules in series, eliminating the need for external heating circuits. This results in extremely low heat loss, stable operation under vibration and rotation conditions, and lower costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the module connection of this utility model.

[0013] Figure 2 This is the circuit diagram of this utility model.

[0014] Figure 3 This is a circuit diagram of a single thyristor module of this utility model. Detailed Implementation

[0015] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0016] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0017] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0018] like Figures 1 to 3 As shown, an input / output controller based on thyristors includes multiple thyristor modules. Each thyristor module includes a transistor switch Q1, an input / output protection module, a gate pulse triggering module, and a gate protection module. The input / output protection module is connected to the base and collector of the transistor switch Q1, respectively. The gate pulse triggering module is connected to the emitter and collector of the transistor Q1, respectively. The gate protection module is connected in parallel to the gate pulse triggering module. The thyristor modules are connected in series to form the controller switch. The input / output protection module includes a capacitor C1, a resistor R1, and a bidirectional transient suppression diode D1. The transistor switch Q1 and the bidirectional transient suppression diode D1 are connected in parallel. The gate pulse triggering module includes a current transformer, which is made of inductor. The two ends of the inductor are connected to the emitter and collector of the transistor switch Q1, respectively. The gate protection module includes a resistor R13, a capacitor C13, and a bidirectional transient suppression diode D13. The resistor R13 and the capacitor C13 are connected in parallel at the emitter of the transistor switch Q1, and the bidirectional transient suppression diode D13 is connected to the emitter and collector of the transistor switch Q1, respectively. There are 24 thyristor modules. The controller switch is formed by encapsulating multiple thyristor modules with epoxy resin.

[0019] This invention uses 24 thyristor modules connected in series and encapsulated in epoxy resin to form a controller switch, which is applied in a high-voltage pulse modulator. In this embodiment, the bidirectional transient suppression diode adopts a 600V voltage specification, which can suppress the peak voltage at the moment of gate trigger conduction, protecting the thyristor modules from being burned out. The controlled high voltage of 12KV is divided into 24 equal parts. Considering that there may be slight differences in the internal resistance of each thyristor module, the voltage passes through 24 stages of series circuit, and each thyristor module can receive 500V voltage. The thyristor modules with a withstand voltage of 1600V are used, so that the thyristor modules have a voltage safety factor of 3 times. Capacitor C1 and bidirectional transient suppression diode D1 are used to suppress the false conduction that may be caused by the moment the thyristor modules are powered on when there is no gate signal, thereby realizing the input / output protection of the circuit.

[0020] When the trigger signal arrives, the trigger pulse signal passes through the transformer coil and induces a pulse signal to trigger the gate, which can simultaneously trigger 24 thyristor modules to open, forming an open circuit.

[0021] Capacitor C13 enables rapid triggering and simultaneously provides current-limiting protection for the gate. A bidirectional transient voltage suppressor diode D13, connected in parallel between the gate and cathode, suppresses transient high voltages, such as those caused by static electricity or power-on, protecting the gate from damage.

[0022] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A thyristor-based input / output controller, characterized in that: It includes multiple thyristor modules, each of which includes a transistor switch Q1, an input / output protection module, a gate pulse triggering module, and a gate protection module. The input / output protection module is connected to the base and collector of the transistor switch Q1, respectively. The gate pulse triggering module is connected to the emitter and collector of the transistor Q1, respectively. The gate protection module is connected in parallel to the gate pulse module. The thyristor modules are connected in series to form a controller switch.

2. The input / output controller based on a thyristor according to claim 1, characterized in that: The input / output protection module includes a capacitor C1, a resistor R1, and a bidirectional transient suppression diode D1, which are connected in parallel.

3. The input / output controller based on a thyristor according to claim 1, characterized in that: The gate pulse triggering module includes a current transformer, which is made of an inductor. The two ends of the inductor are connected to the emitter and collector of the transistor switch Q1, respectively.

4. The input / output controller based on a thyristor according to claim 1, characterized in that: The gate protection module includes a resistor R13, a capacitor C13, and a bidirectional transient suppression diode D13. The resistor R13 and the capacitor C13 are connected in parallel at the emitter of the transistor switch Q1, and the bidirectional transient suppression diode D13 is connected to the emitter and collector of the transistor switch Q1, respectively.

5. The input / output controller based on a thyristor according to claim 1, characterized in that: The number of thyristor modules is 24.

6. The input / output controller based on a thyristor according to claim 1, characterized in that: The controller switch is formed by encapsulating multiple silicon controlled rectifier (SCR) modules with epoxy resin.

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