CN87204632U - Co2 laser electric source for generating high voltage pulse of transistor - Google Patents

Abstract

The utility model discloses a CO-[2] laser electric source for generating the high voltage pulse of a transistor, which is used for electrically exciting a sealed type CO-[2] laser tube and other gas laser tubes, and the pulse laser outputted by the laser electric source has wide application at the aspects of punching, the fine adjustment of the resistance, etc. The utility model comprises a main electric source and power controlling part I, an auxiliary electric source II, an oscillation modulating part III, a driving part IV, laser tubes J-[1] and J-[2]VI, a water break protecting part VII, a cooling water part and a transistor inverting and voltage boosting part of the cooling water part. The frequency of the utility model can be modulated as high as 1500HZ, with high efficiency, low energy consumption, small volume, light weight and large pulse power, and the utility model can simultaneously balance and excite two CO-[2] laser tubes of less than 18 meters.

Description

CO2 laser electric source for generating high voltage pulse of transistor

The utility model is transistor high-voltage pulse CO ₂Laser Power Devices are used for enclosed type CO ₂Laser tube and other Gas LASER Tube electric excitation, the pulse laser of output is widely used at aspects such as punching, resistor trimmings.

Current, one of major measure that reduces tar content in the cigarette in the world is exactly punching, and most countries all is to utilize CO ₂Laser punches, the enclosed type CO of China's employing at present ₂The energisation mode of laser tube punching is the continuous laser power supply excitation, and it sends continuous laser, with chopper it is become pulsed light then and punches.But adopt its efficient of this energisation mode very low, very big a part of energy " is cut away " and has been wasted, and the maximum power of punching is the average power of this pipe.

The utility model provides a kind of direct employing pulse power excitation, sends the transistor high-voltage pulse CO that pulsed light punches ₂Laser Power Devices.

Because of the utility model directly adopts pulse power excitation, punch and have advantages such as efficient height, energy consumption is low, physical efficiency is little, power is big so send pulsed light.

Below in conjunction with drawings and Examples the utility model is described:

Accompanying drawing 1 is a functional-block diagram of the present utility model.

Accompanying drawing 2 is an enforcement line map of the present utility model.

The utility model comprises main power source and power control section branch, accessory power supply, vibration modulation, promotion, laser tube J ₁And J ₂, water cut-off protection, cooling water part, it is characterized in that the inversion boosting part is made of transistor unit, and can encourage two laser tubes simultaneously.

See Fig. 1, main power source becomes the 220V alternating current of importing into DC adjustment power control section branch can change laser output power, this direct voltage offers the inversion boosting part, it obtains trigger impulse by pusher simultaneously, the inversion boosting device is started working, the high electric field pulse of laser tube negative resistance charactertistic is satisfied in generation, the exciting laser pipe.Accessory power supply produces the duplicate supply of high stability, supplies with the vibration modulation and promotes part, and oscillator produces the above square-wave signal of 1000Hz, by modulator it is modulated into the pulse of satisfying the punching needs, by pusher it is amplified, promotes the inversion boosting device again.Put.CO ₂Must carry out water-cooled during laser works, in case cut off the water supply, its water cut-off protection device can cut off major loop immediately with the protection laser tube.

See Fig. 2, main power source and power control section branch I mainly comprise single-phase voltage regulating device B ₁Relay J, button K ₁, K switch, by diode D ₁～D ₄The bridge rectifier that constitutes and by capacitor C ₅, C ₆, inductance L ₁The π type filter circuit and the indicator light that constitute, and π type filtering wave circuit is by relay contact J _K-1Connect bridge rectifier.Accessory power supply π comprises power transformer B ₂, diode D ₅～D ₁₂Two bridge rectifiers, the positive and negative three terminal regulator CW that constitute ₊, CW _-And filter capacitor C ₇～C ₁₀, vibration modulating part III comprises operational amplifier A ₁, A ₂NAND gate M ₁～M ₄And corresponding resistance, electric capacity, transistor, the square-wave signal after the output modulation for promoting part, promotes IV and comprises two engine power A ₃, A ₄And corresponding resistor, electric capacity and pulse transformer B ₃, B ₄, and promote partly to be output as triode BG ₁, BG ₂Base stage drive signal is provided, the inversion boosting part of V comprises triode BG ₁, BG ₂, piezo-resistance R ₁, R ₂, capacitor C ₁, C ₂, high voltage pulse transformer B ₅, rectifier diode D ₂₁, D ₂₂, triode BG wherein ₁, BG ₂, piezo-resistance R ₁, R ₂, capacitor C ₁, C ₂Constitute half bridge inverter circuit, its output is by high voltage pulse transformer, B ₅And through rectifier diode D ₂₁, D ₂₂And current-limiting resistance is defeated by two laser tube J ₁, J ₂, and with the pre-ionization capacitor C ₃, C ₄Cross-over connection is in rectifier diode D ₂₁, D ₂₂Two ends.Capacitor C wherein ₃, C ₄Play the pre-ionization effect, control capacittance C ₁, C ₂And transformer B ₅Secondary X, y can satisfy the negative resistance charactertistic of laser, but and balance two-laser J ₁, J ₂The power of output IV, when positive half period during early stage, BG ₁Conducting, BG ₂End, at this moment transistor BG ₁, transformer B ₅Elementary and capacitor C ₂Constitute the loop, through transformer B ₅Boost diode D ₂₁, D ₂₂Rectification, exciting laser pipe J ₁, when the positive half period later stage because of Triggerless after modulating, transistor BG ₁BG ₂End jointly, situation is opposite during negative half-cycle, like this laser tube J ₁, J ₂Form laser pulse respectively and carry out hot working, the water cut-off protection VII is made of pressure controller, when laser tube is cut off the water supply, blocks main power source and shields.

This power pulse frequency and width are adjustable, up to 1500Hz, have the efficient height, energy consumption is low, volume is little, in light weight, pulse power is big, two CO below 1.8 meters of balanced excitation simultaneously₂Laser tube.

Claims (1)

1, a kind of transistor high-voltage pulse CO ₂Laser Power Devices, it comprises main power source and power control section branch, accessory power supply, vibration modulation, promotes laser tube J ₁And J ₂, water cut-off protection, cooling water part, it is characterized in that it also comprises the inversion boosting part, and the inversion boosting part is made of transistor unit mainly, and inversion boosting partly comprises triode BG ₁, BG ₂, piezo-resistance R ₁, R ₂, capacitor C ₁, C ₂, high voltage pulse transformer B ₅, rectifier diode D ₂₁, D ₂₂, triode BG wherein ₁, BG ₂, piezo-resistance R ₁, R ₂, capacitor C ₁, C ₂Constitute half bridge inverter circuit, its output is by high voltage pulse transformer B ₅, and through rectifier diode D ₂₁, D ₂₂And current-limiting resistance is defeated by two laser tube J ₁, J ₂, and with the pre-ionization capacitor C ₃, C ₄Cross-over connection is in rectifier diode D ₂₁, D ₂₂Two ends.

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