CN2183037Y

CN2183037Y - Non contact generating the arc trigger

Info

Publication number: CN2183037Y
Application number: CN 94203649
Authority: CN
Inventors: 赵现君
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-19
Filing date: 1994-02-19
Publication date: 1994-11-16
Anticipated expiration: 2004-02-19

Abstract

The utility model discloses a non-contact automatic generating arc trigger, comprising a power-supply filter circuit, a non-contact automatic oscillation primary boosted circuit, and a secondary pulse boosted circuit. A capacitor C4 is connected in parallel between the collector electrode and the emitting electrode of the triode BG1 of the non-contact automatic oscillation primary boosted circuit, a protecting winding L14 which is arranged on a transformer B1 is connected with a diode D3 in series, and the base electrode of the triode BG1 is also connected with a Zener diode DW and diodes D1, D2 which are used for connecting an alternating-current feedback path. In the secondary pulse boosted circuit, an air discharger SG is connected with the primary winding of a secondary boosting transformer B2 in series, and the output winding of the transformer B1 is connected with a diode D4 in series.

Description

Non contact generating the arc trigger

The utility model relates to a kind of high-voltage great-current electronic trigger lug that is applied to the startup of high pressure light fixture, air plasma cutter igniting etc.

Currently used trigger is all made supply convertor with the mechanical type oscillating circuit that relay and normally-closed contact thereof constitute.Because the limitation of contact electrical equipment, factor such as this contact switch acts frequently in addition, switching current is big often causes contact surface arcing damage or freezes and can't disconnect, and causes the trigger failure rate high.And because its frequency of oscillation is limited, can only work in hundreds of hertz, cause step-up transformer and whole trigger bulky, its secondary booster circuit working is in higher-order of oscillation state in addition, so it triggers energy and does not concentrate, the trigger reliability is low, also makes a booster circuit load increase the weight of, and has caused big, the inefficient shortcoming of flip-flop operation electric current.At above-mentioned shortcoming, at present trigger being proposed improved plan has: China Patent No.: 90206522, X, and name is called " the contactless trigger of locomotive mercury xenon lamp ", though it has improved the service behaviour and the useful life of trigger, but, cause the circuit complexity owing to adopt multiple tube; Because the protective circuit imperfection, cause self reliability not high; But also have can not continuous trigger, can not indicate shortcomings such as self operating state.

The utility model purpose promptly produces thus, proposes a kind of self reliable operation, long service life, working power and surge frequency range is wide, volume is little, can link automatic triggering, can indicate the contactless arc automatic starting trigger of self operating state.

For achieving the above object, the utility model is achieved through the following technical solutions: it is made up of electric source filter circuit, booster circuit of contactless automatic vibration and second pulse booster circuit.Between the collector and emitter of the triode BG1 of a booster circuit of contactless automatic vibration, be parallel with and be used to absorb pulse spike, prevent the breakdown capacitor C of triode BG1 4, also be provided with protection winding L 14 on transformer B1, this winding is connected with protection diode D3 and is used for magnetic-reset or the too high inverse peak voltage of clamping transistor BG1 collector electrode; Also be connected with the Zener diode DW that is used for controlling automatically trigger process in the base stage of triode BG1 and be used to be connected diode D1, the D2 that exchanges feedback network.In the second pulse booster circuit, atmospherical discharges device SG is connected with the elementary windings in series of secondary booster transformer B2, is in series with diode D4 on the output winding of transformer B1.

The utility model reasonable in design, volume is little, efficient is high, failure rate is extremely low, but long service life, reliable working performance continuous trigger start.Owing to adopt Zener diode DW to control start-up course automatically, can realize that continuous automatic triggering starts.Fuse resistance R 2 has not only constituted the biasing circuit of triode BG1, but also has the effect of overcurrent protection.The alternating current path of the feedback winding that diode D1, the D2 that is connected with triode BG1 base stage constitutes, because D1 is a light-emitting diode, the double action of strangulation triode BG1 base potential and faulty indication when it also has the supply convertor failure of oscillation.The capacitor C 4 that is connected between the collector and emitter of triode BG1 has the spike of absorption, prevents the effect that triode BG1 is breakdown.Because transformer B1 is provided with the diode D3 of protection winding L 14 by series connection with it to power supply release too high pulse voltage or magnetic-reset when being used for the normal shock way of output, so transformer B1 can work in positive and negative any way of output that swashs.Diode D4 and storage capacitor C5 are set in the second pulse booster circuit constitute accumulator, when storage capacitor C5 energy stored during greater than certain value, once release in the mode of pulse to secondary booster transformer B2 by atmospherical discharges device SG with the elementary windings in series of secondary booster transformer B2, secondly then utmost point induces the high voltage electric arc that ignites, and realizes triggering automatically.

The utility model has following accompanying drawing.

Accompanying drawing one is the utility model circuit theory diagrams.

Accompanying drawing two is examples of implementation of the present utility model.

In conjunction with the accompanying drawings, providing the utility model, to be applied to the embodiment that mercury xenon lamp starts as follows:

As shown in the figure: the utility model is made up of electric source filter circuit, booster circuit of contactless automatic vibration, second pulse booster circuit.Electric source filter circuit is made of capacitor C1, C2.Booster circuit of contactless automatic vibration is made up of triode BG1, switch transformer B1, Zener diode DW, resistance R 1, diode D2, light-emitting diode D1, insurance resistance R 2 and capacitor C 3, C4, wherein Zener diode DW, resistance R 1 are serially connected in the base stage composition automatic bias circuit of triode BG1, and the feedback winding is serially connected with the emitter of triode BG1.Diode D1, D2 are attempted by between triode BG1 base stage and the ground, are used to absorb pulse spike, prevent that the breakdown capacitor C of triode BG1 4 is connected between the collector electrode and emitter of triode BG1.Protection winding L 14 is connected in series with diode D3; The second pulse booster circuit is made up of diode D4, storage capacitor C5, atmospherical discharges device SG, transformer B2, and wherein diode D4 is connected in series with the output winding L 13 of switch transformer B1.Atmospherical discharges device SG is connected with the first utmost point windings in series of transformer B2, and storage capacitor C5 is attempted by between two series circuits.

The course of work of the present utility model is as follows: energized, at this moment, the mercury xenon lamp LAMP work that is not triggered, it is minimum that then current-limiting resistance R goes up pressure drop, supply voltage all is added on the trigger, make the triode BG1 vibration that produces high frequency that obtains setovering change direct current into the high-frequency ac pulse by Zener diode DW, B1 boosts through transformer, the limit high pressure that induces volts up to ten thousand charges to storage capacitor C5 through diode D4 rectification secondarily, when storage capacitor C5 both end voltage during greater than the puncture voltage of atmospherical discharges device SG, this discharger discharge, the electric energy that storage capacitor C5 stores all is added on the secondary booster transformer B2, and then secondly the limit induces electric arc in the very high voltage puncture pilot light.After mercury xenon lamp LAMP is triggered and drops into operate as normal, current-limiting resistance R goes up and produces very big pressure drop, make the input voltage of this trigger reduce, be lower than the puncture voltage of diode DW, then this pipe ends, triode BG1 loses bias current, and booster circuit failure of oscillation of contactless automatic vibration quits work automatically.When input supply voltage during too high or second pulse booster circuit fault; the inverse peak voltage protection front stage circuits that protection winding L 14 is released too high by diode D3 to power supply; or booster circuit of contactless automatic vibration is used to make magnetic-reset when adopting the normal shock way of output.When barrier causes booster circuit failure of oscillation of automatic vibration for some reason, light-emitting diode D1, resistance R 1 and fuse resistance R 2 can limit the power consumption of triode BG1, prevent that triode BG1 is by scaling loss, light-emitting diode D1 lights simultaneously, indicate this trigger to break down, for the trouble shoot of whole mercury xenon lamp system provides great convenience.

Claims

1, a kind of contactless arc automatic starting trigger is made up of electric source filter circuit, booster circuit of contactless automatic vibration and second pulse booster circuit, it is characterized in that: between the collector electrode of the triode (BG1) of a booster circuit of contactless automatic vibration and emitter, be parallel with and be used to absorb pulse spike, prevent the electric capacity (C4) that triode (BG1) is breakdown; Also be provided with protection winding (L14) on transformer (B1), this winding also is in series with protection diode (D3), is used for the too high inverse peak voltage of magnetic-reset or clamping transistor (BG1) collector electrode; Also be connected with the Zener diode (DW) that is used for controlling automatically trigger process in the base stage of triode (BG1) and be used to be connected the diode (D1, D2) that exchanges feedback network.In the second pulse booster circuit, atmospherical discharges device (SG) is connected with the elementary windings in series of secondary booster transformer (B2), and rectification output diode (D4) is connected on the output winding of transformer (B1).

2, trigger according to claim 1 is characterized in that: the diode (D1) in booster circuit of contactless automatic vibration is a light-emitting diode, has the effect of strangulation transistor base current potential and faulty indication.

3, trigger according to claim 1 is characterized in that: being used in the described second pulse booster circuit stores the output that the electric capacity (C5) that triggers energy is connected rectification output diode (D4).