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Output-adjustable nanosecond pulse source based on avalanche triode cascade circuit

A base and cascading technology, which is applied to electric pulse generator circuits, energy storage elements to generate pulses, and output power conversion devices, etc., can solve problems such as fixed output power, achieve easy production, increase control flexibility, and cost. low cost effect

Active Publication Date: 2020-03-13
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing avalanche cascade circuits have a variety of styles, they are basically based on the Mark cascade circuit, and the output power is fixed, which has great limitations for devices with diverse output requirements.

Method used

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  • Output-adjustable nanosecond pulse source based on avalanche triode cascade circuit
  • Output-adjustable nanosecond pulse source based on avalanche triode cascade circuit
  • Output-adjustable nanosecond pulse source based on avalanche triode cascade circuit

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Embodiment Construction

[0020] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The basic circuit is as figure 1 As shown in a to 1c, the current Mark cascade circuit mainly has multi-tube series cascade and multi-tube parallel cascade. With the increase of applications, there are many ways to combine series and parallel. The series connection of multiple tubes can effectively reduce the risk of breakdown of a single tube under high voltage driving. The parallel connection of multiple tubes can realize the parallel charge and series discharge of the charging capacitor to achieve a higher output voltage. The combination of multiple tubes in series can absorb the advantages of the two methods, and can efficiently output instantaneous high-voltage, high-power pulses.

[0022] The avalanche trigger mode of the avalanche transistor includes three types: trigger conduction, overvoltage conduct...

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Abstract

The invention discloses a control circuit and a control method of a pulse output source and a corresponding pulse source system. The control circuit comprises a trigger part, a cascade charging and discharging part and a load part, the cascade charging and discharging part comprises a plurality of units which are cascaded in sequence, and each unit comprises an avalanche transistor, an avalanche transistor (hereinafter referred to as a controllable transistor) for switch control, a current-limiting resistor and a charging capacitor; wherein the base electrode of the controllable transistor ineach unit is used for receiving a control signal, so that the charging capacitor in the unit can be selectively excluded from the discharging capacitor bank to realize the adjustment of the output power of the pulse output source. According to the invention, the electric quantity is selectively collected from the energy source, the cost is low, the manufacturing is easy, and the pulse source system can meet the requirements of more application scenes while the control flexibility is improved.

Description

technical field [0001] The invention relates to the technical field of control circuits, in particular to a control circuit, a control method and a pulse source system of a pulse source. Background technique [0002] With the increasing innovation of electronic products, in many fields such as ground penetrating radar, sterilization, industrial processing, laser gating imaging, etc., the demand for nanosecond-level narrow pulse signal sources with high voltage, high power, and repetition rate is also increasing. more. Taking laser devices that are more and more widely used as an example, the power of commonly used small lasers is about ten milliwatts to hundreds of milliwatts, and some even reach watts. Under normal circumstances, excessive power supply will cause damage to the laser, but the instantaneous high power will not cause damage to the laser, so the application of instant triggering to light the laser also emerges, and then the method of instantaneously triggering...

Claims

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Application Information

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IPC IPC(8): H02M9/04H03K3/57
CPCH02M11/00H03K3/57H02M1/007
Inventor 谈宇光鲁远甫陈良培焦国华章逸舟刘鹏
Owner SHENZHEN INST OF ADVANCED TECH
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