SU1614100A1 - Power source of process laser unit - Google Patents

Abstract

The invention relates to a pulse technique and can be used in power supply devices for pumping solid-state lasers. The aim of the invention is to expand the scope by extending the range of variation of the output signal. The power supply of the laser processing unit contains a current source 1, a pumping lamp 2, an ignition transformer 3, a control switch 4, a shaping accumulator 5, an ignition block 6, a smoothing filter 7, an arc 8 block 8, gates 9 and 10, switches 11 and 12. The power supply has three modes of operation: pulsed, continuous and pulsed continuous. 1 il.

Description

The invention relates to a pulse technique and can be used in power supply devices for pumping solid-state lasers.

The purpose of the invention is to expand the scope by expanding the range of variation of the output signal.

The drawing shows a structural electrical circuit of the device.

The device contains a current source 1, the first output of which is connected to the first output of the pumping lamp 2, the second output of which is connected to the output of the controlled switch 4 through the first winding of the ignition transformer 3, the output of which is connected to the first output of the forming accumulator 5, the second winding of the transformer 3 ignition associated with the output of block b ignition accumulator 5, smoothing filter 7, block 8 on duty arc, the first 9 and second 10 valves, the first It and the second 12 switches, the switching contact of the first switch 11 is connected to the second output source full current t, the closing contact - with the second output of the forming accumulator 5, opening contact- with the third output of the forming storage 5, the anode of the first valve 9, the switching contact of the second switch 12, the disconnecting contact of which is connected to the first output of the current source 1, the closing contact g with the input of the smoothing filter 7, the output of which is connected to the cathode of the second valve 10; the anode of which is connected to the input of the control key 4.

The device works as follows.

The device has a two-stage start.

The first stage: the ignition unit 6, through the high-voltage pulse transformer 3, delivers a high-voltage pulse to the lamp 2, which pierces the gas-discharge gap of the lamp and the stand-by arc current from a low-power source flows through it. Then three operating modes are possible.

1. Pulse mode. Managed switch 11 is in position 13, controlled switch 12 is in position 14. Source 1 unchanged in magnitude current charges linearly forming drive 5. At the moment when the charging voltage reaches a given level, there are two possible options operation: a) discharge of the forming accumulator 5 along the circuit: discharge key 4 - winding of the pulse transformer 3 - lamp 2 - uncontrolled valve 9, and then the subsequent charge of the forming accumulator 5 from the source 1 disconnected at the time of the discharge; b) controlled switch 11 is switched to position 15, charge of accumulator .5 is completed, current source 1 is operating in short circuit mode. The discharge of the forming accumulator 5 can be carried out via the discharge key 4.

2. Continuous operation. The controllable switch 11 is in position 15, the control switch 12 is in position 16. The charge of the forming accumulator is not produced. The current of source 1 flows through the lamp. It carried out the switching by a controlled switch

12, i.e. switching the source 1 to the short-circuit mode or connecting it to the lamp through the filter 7, it is possible to change the level of this by pulse-width or pulse-frequency adjustment

continuous current.

3.Pulse-continuous operation. Managed switch 11 is in position 13. According to a linear law, forming drive 5 is charged to

set level The current of source 1 at the second terminal of the shaping accumulator is switched by the controlled switch 12 in such a way that the level of continuous current through the lamp is regulated. As well as

and in the case of a purely pulsed mode, the discharge of the forming accumulator 5 on the pump can be carried out immediately upon reaching a predetermined level of charge, or with a time delay (controlled switch 11

in position 15).

Claims (1)

The invention The power supply of the laser processing unit, containing a current source, the first output of which is connected to the first output of the pumping lamp, the second output of which is connected through the first winding of the ignition transformer to the input of the control key, the output of which is connected to the first output of the forming accumulator, the second winding of the transformer ignition is connected to the output of the ignition unit, a smoothing filter, a power supply is connected parallel to the pump lamp on duty arc, characterized in that, in order to expand the scope of application, by expanding the range of variation of the output signal, the first and second valves, the first and second switches, switching the contact of the first switch with one with the second output of the current source, closing contact - with the second output of the forming drive, opening contact - with the third output of the forming accumulator 5116141006 l, the anode of the first valve, switching-closing contact-with the inlet of the second contact with your contact of the second switch, the first filter whose output is connected open contact of which is connected to the cathode of the second valve, the anode of which It is connected to the input of the control key.