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Method and device for controlling high-voltage discharge measuring instrument

A high-voltage discharge and control method technology, which is applied to measuring devices, discharge tubes, TVs, etc., can solve problems such as movement errors, crashes, and reduced test accuracy

Inactive Publication Date: 2005-07-20
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing high-voltage discharge tester has the following disadvantages: 1. Generally, a mechanical counter is used for counting. If there is no discharge in a certain cycle, it will still make an effective record, which reduces the accuracy of the test.
2. There is no control on the discharge cycle. In this way, there will be certain errors in testing the cores of different models, because the high voltage of different models is different, and the high voltage of large models is higher. If the cycle is too fast during the test, The high pressure of the movement cannot be effectively restored
3. No protective measures are taken at the high and low voltage discharge ends, so that when the high and low voltage ends reach the discharge point distance, continuous arc discharge will occur, causing the core board to protect itself or crash

Method used

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  • Method and device for controlling high-voltage discharge measuring instrument
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  • Method and device for controlling high-voltage discharge measuring instrument

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Experimental program
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Embodiment 1

[0023] Embodiment 1. A control method for a high-voltage discharge tester. By controlling the motor speed of the high-voltage discharge tester, the test period for a large-scale TV movement is long, and the test period for a small-size TV movement is long. The test period is short. In addition, by setting up an acceleration mechanism, when the needle end of the low-voltage rotary needle is about to approach the top of the high-voltage rod, the low-voltage rotary needle will be accelerated to rotate through the acceleration mechanism, and the high-low and high-voltage needle ends will be drawn by the acceleration mechanism. It is advisable to control the discharge time within about 0.05 seconds.

Embodiment 2

[0024] Embodiment two, such as Figure 1-4 Shown is the implementation of a high-voltage discharge tester of the present invention. The instrument is composed of two parts: one part is a mechanical device. Convert counter 29 and timer 28. The discharge part of the mechanical device includes a box body, a speed control switch 30, a control circuit, a motor 14, a transmission device, an acceleration mechanism, a low-voltage rotary needle 10, a high-pressure rod 22, a protective cover 21, a discharge distance adjusting device and an indicating device.

[0025] The box body is made up of upper cover plate 7, left side plate 25, right side plate 8, front panel 33, rear plate 4, base plate 9, scale 5 and observation window 6 are set on the upper cover plate 7, and adjustment Speed ​​switch 30, power switch 31, counter 29 reset switch 32, counter 29 and the fixed position of timer 28.

[0026] Accelerating mechanism comprises positioning sleeve 12, lug 11 and hinge baffle plate 34,...

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Abstract

The invention discloses a control method for high voltage discharge tester, controlling the speed of electric motor of the high voltage discharge tester to make it have a long testing period for large-scale TV set core and a short testing period for small-scale one, arranging an accelerating mechanism, and accelerating a low voltage rotating pin by the accelerating mechanism as the end of the rotating pin is about to approach that of a high voltage pin. The invention also discloses a high voltage discharge tester, including box body, speed regulating switch, control circuit, electric motor, drive mechanism, low voltage rotating pin, accelerating mechanism, high voltage pin, discharging distance adjuster and counter, where the speed regulating switch controls the speed of the electric motor by the control circuit, the power output end of the drive mechanism is connected with the accelerating mechanism, and the drive mechanism drives the low voltage rotating pin and as the end of the low voltage rotating pin is about to approach that of the high voltage pin, the rotation of the low voltage rotating pin is accelerated by the accelerating mechanism and the discharging distance between the ends of the two rotating pins is adjusted by the discharging distance adjuster. The invention makes discharging cycle adjustable, discharging course quick and simple and discharging distance adjustable, too.

Description

【Technical field】 [0001] The invention relates to a high-voltage discharge tester, which is used for simulating a high-voltage discharge process and recording the discharge test time and times. 【Background technique】 [0002] In the development and production process of color TV sets, in order to test the insulation between the picture tube itself and the R, G, B electrodes of the CRT board and the stability of the TV core board under the high-voltage ignition state, the power-on In this state, the cathode high voltage (about 30,000 volts) is discharged to each electrode (0-180V) of the CRT board. It is necessary to make a high-voltage discharge tester that simulates the discharge process in a special environment and records the discharge test time and times. [0003] The high-voltage discharge tester mainly includes a motor, a low-voltage rotary needle, a high-voltage needle, a counter and other auxiliary mechanisms. Discharged and recorded by a counter. Existing high-vo...

Claims

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Application Information

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IPC IPC(8): G01R31/00H01J37/04H04N3/20
Inventor 吴伟杨军治冀国兴刘文福
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD