SU1448392A1 - Supply device for pulsed gas-discharge lamp - Google Patents

Description

(21) 4187298 / 24-2I

(22) 01/28/87

(46) 12/30/88. Bul Number 48

(72) S.A. Vitsinsky and V.I. Kulakov

(53) 621.373.5 (088.8)

(56) USSR Copyright Certificate No. 616709, cl. H G3 K 3/53, 977.

USSR Author's Certificate No. 608256, cl. H 03 K 3/53, 1976.

(54) DEVICE FOR POWER SUPPLY OF PULSE GAS-DISCHARGE LAMP

(57) The invention relates to the technique of forming large pulsed currents, and can be used, for example, in power sources of high-power pulsed lighting installations. The purpose of the invention, the enhancement of the reliability of the device, is achieved by using the switching properties of the gas-discharge flash lamp itself, and the operation. which is automatically

causes the managed switch to turn off. Another goal is to increase efficiency by eliminating active resistances from the main discharge circuit, which have high power dissipation. In the initial state, the switching capacitor 4 is charged up to the voltage of the source 7. When the control is applied: 1 pulse and the required current is formed in the inductive drive 3, a signal is generated to ignite the plate 5. When the lamp is ignited, the voltage of the capacitor 4 is applied to the drive 3 and closes the thyristor switch 2. After the accumulator 3 is discharged, the current through the lamp 5 is stopped. The capacitor 4 is recharged until the voltage of the source 7 and the process is repeated when a control pulse is applied to the switch 2. 1 il.

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The invention is carried to a technique of large pulsed currents and can be used, in particular, in power sources of high-power pulsed lighting installations.

The aim of the invention is to increase the reliability of the device, which is achieved by using the switching properties of the gas-discharge flash lamp itself, the operation of which automatically turns off the controlled switch and also increases the efficiency by eliminating active resistors from the main discharge power dissipation.

The drawing shows the scheme of the proposed device for powering a pulsed gas discharge lamp.

The device contains a source 1 of a current, in parallel with which a series-connected controlled switch 2 on the thyristor and an inductive drive 3 are connected, switching a capacitor 4 connected by the first f plate to the connection point of switch 2 and drive 3, and the second to a flash discharge lamp 5 and through the limiting resistance 6 to the voltage source 7, the second pole of which is connected to the other output of the lamp 5 and the connection point of the current source 1 and the storage device 3, is connected, in parallel with the capacitor 4, valve 8,

The device works as follows.

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In the initial state, the switching capacitor 4 is charged up to the voltage of the source 7. After the control pulse is applied to the thyristor switch 2, the circuit is closed; current source 1 - thyristor switch 2 - inductive drive 3. When the required current is reached in inductive drive 3, a signal is given to ignite a pulsed gas discharge lamp 5. After ignition of lamp 5, the voltage of switching capacitor 4 is applied through it to inductive drive 3 and the thyristor switch 2 locks, the inductive storage current 3 prote

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It goes to the motor: inductive storage device 3 — pulse gas discharge lamp 5 — uncontrolled valve 8. After the discharge of the inductive storage device 3 is completed, the current through lamp 5 stops and it restores its dielectric strength. The switching capacitor 4 is charged before the voltage of the source 7, whose power is not sufficient to maintain the current through the lamp 5 after discharge of the inductive storage device 3. The device is again ready for operation. The process is repeated when a control pulse is applied to the thyristor switch 2. The capacitance of the switching capacitor 4 is determined by the parameters of the inductive energy storage device and the electrical strength recovery time of the controlled switch (off time for the thyristor switch).

Claims (1)

Invention Formula A device for powering a pulsed gas discharge lamp containing a current source in parallel with which a series-connected controlled switch and an inductive storage device, a switching capacitor, a pulse gas discharge lamp, a limiting resistance, a voltage source, which is that, in order to increase the reliability and efficiency of the device, parallel to the switching capacitor and counter to the current and voltage sources, a valve is additionally connected, while the first plate of the switching the capacitor is connected to the connection point of the controlled switch and inductive storage device, and the second plate is connected to the first terminal for connecting a pulsed gas discharge lamp and through a limiting resistance to a voltage source whose other pole is connected to the second terminal for connecting a pulsed gas discharge lamp and a point inductive drive and current source connections.