CN2476891Y

CN2476891Y - On-off circuit for reducing Pukel box discharge interference

Info

Publication number: CN2476891Y
Application number: CN 01219229
Authority: CN
Inventors: 岳古明
Original assignee: Anhui Institute of Optics and Fine Mechanics of CAS
Current assignee: Anhui Institute of Optics and Fine Mechanics of CAS
Priority date: 2001-04-05
Filing date: 2001-04-05
Publication date: 2002-02-13
Anticipated expiration: 2011-04-05

Abstract

An on-off circuit for reducing Pukel box discharge interference consists of a coaxial cable, resistances, a thyratron, a trigger transformer and a Pukel box. Two resistances are connected between the input end and the Pukel box as well as the flow braking pipe; the other connecting point of the Pukel box and the other foot of the flow braking pipe are connected to the screen closed wire at the coaxial cable. The utility model is used in related system to greatly reduce the range of the interference impulse, and hardly has any interference on the other electronic circuit.

Description

Reduce the switching circuit that the Pockers cell discharge is disturbed

The utility model relates to Pockers cell switching circuit technology.

In prior art, in laser resonant cavity, add the pulsewidth that the Pockers cell electrooptical switching compresses output laser, but added a few kilovolt voltages must discharge and recharge synchronously with the light pulse of output on the Pockers cell, charge and discharge switch is generally all done with cold cathode thyratrom by China, and particular circuit configurations as shown in Figure 1.Frame of broken lines is cold cathode thyratrom T among Fig. 1, and B is for triggering transformer, C ₀For quickening discharge capacity, R is a current-limiting resistance; The A point is a high voltage input terminal, and the C point is the triggering signal input, and 2 of E, F are connected D point ground connection with Pockers cell.When high voltage is given capacitor C by EFD ₀After filling high pressure with Pockers cell, triggering signal inputs to the triggering primary by triggering cable C, D, passes to secondary triggering T conducting again, makes C ₀Discharge with Pockers cell.This charging circuit and method of attachment produce several disturbing pulses that lie prostrate tens volts when making cold cathode thyratrom T discharge, thereby have a strong impact on the application of laser radar, laser ranging and small-signal detection etc.

The purpose of this utility model is to design a kind of switching circuit that can overcome and reduce Pockers cell by the serious interference of cold cathode thyratrom discharge generation.

For achieving the above object, solution of the present utility model is: insert two resistance between high voltage input terminal and Pockers cell and thyratron, wherein an end of a resistance links to each other with high voltage input terminal by the center line of high-pressure coaxial cable, the other end links to each other with an end of another resistance and the end points of another root high-pressure coaxial cable center line, and the other end of another resistance links to each other with the anode of cold cathode thyratrom; The negative electrode of thyratron links to each other with the screen abutment line of two high-pressure coaxial cable lines and of the secondary coil that triggers transformer; A tie point of Pockers cell is connected on the other end center line of another root high-pressure coaxial cable, and another tie point is connected on the screen abutment line of the same end of this cable.

The utility model does not use and quickens discharge capacity C ₀

With the Pockers cell electrooptical switching that the utility model circuit and method of attachment are made, the system and device that is used for being correlated with has significantly reduced the amplitude of disturbing pulse, and other electronic circuit in the system is almost no longer included interference.

Below in conjunction with accompanying drawing, the utility model is described in more detail.

Accompanying drawing 1 is existing Pockers cell charge and discharge switch circuit diagram;

Accompanying drawing 2 reduces the switching circuit figure that the Pockers cell discharge is disturbed for the utility model.

The utility model as shown in Figure 2, at high-pressure coaxial cable ADA ₁A ₂, high-pressure coaxial cable E ₁F ₁Be connected to two resistance (current-limiting resistance R between EF and the thyratron T ₀With build-out resistor R _P).Concrete method of attachment is: high-pressure coaxial cable ADA ₁A ₂AD end link to each other with transferring Q power supply high-voltage output end; Its other end A ₁A ₂A ₁Point and resistance R ₀An end link to each other; R ₀The other end and resistance R _PAn end and another high-tension cable E ₁F ₁The E of EF ₁Point links to each other; High-tension cable E ₁F ₁2 of the E of EF, F link to each other with two contact conductors of Pockers cell respectively; Resistance R _PThe other end link to each other with the anode 1 of thyratron T; Coaxial cable ADA ₁A ₂A ₂Point, coaxial cable E ₁F ₁The F of EF ₁Point, the negative electrode 2 of thyratron T is connected with 4 that trigger B level of transformer; Triggering 3 of B time grade in transformer links to each other with an end of resistance R; The other end of resistance R links to each other with the trigger electrode of thyratron; Triggering signal transmission cable CDC ₁C ₂CD end link to each other its C with the triggering signal output of transferring the Q power supply ₁C ₂2 C of end ₁, C ₂Link to each other with two elementary terminations of triggering transformer B respectively.D among the figure, A ₂, F ₁, F, C ₂All represent the end points on the coaxial cable shield line.

The concrete course of work is: when high voltage is imported through high-pressure coaxial cable ADA by the AD end ₁A ₂, resistance R ₀With another high-pressure coaxial cable E ₁F ₁EF fills high voltage with to Pockers cell, when trigger impulse is imported by CD, passes to through the triggering signal cable that it is secondary after trigger primary again, triggers thyratron T conducting by secondary by resistance R, makes on the Pockers cell added high voltage through high-pressure coaxial cable E ₁F ₁EF and resistance R _PRepid discharge reaches the purpose of optical switch.

Claims

1. one kind is reduced the switching circuit that the Pockers cell discharge is disturbed, form by high-pressure coaxial cable line, resistance, cold cathode thyratrom, triggering transformer and Pockers cell, it is characterized in that: between input (A) and Pockers cell and thyratron (T), be connected to two resistance (R ₀, R _P), resistance (R wherein ₀) an end by coaxial cable (A, A ₁) center line, (A) links to each other with input, the other end and another resistance (R _P) an end and coaxial cable (E ₁E) end points (E of center line ₁) link to each other another resistance (R _P) the other end and the leading foot (1) of cold cathode thyratrom (T) link to each other; Another leading foot (2) of thyratron (T) and cable (AA ₁, E ₁E) screen abutment line links to each other with the secondary coil that triggers transformer (B); A tie point (E) of Pockers cell is connected on coaxial cable (E ₁E) on the center line, another tie point (F) is connected on this cable (E ₁E) on the screen abutment line.