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High-voltage electrifying display device

A high-voltage charged display and capacitance technology, which is applied in the direction of measuring devices, measuring electrical variables, and measuring current/voltage, can solve problems such as potential safety hazards, low induction current, and weak flickering intensity of flash components, so as to ensure work safety and flickering intensity Strengthen and eliminate potential safety hazards

Inactive Publication Date: 2013-04-17
SICHUAN LANXUNBAOER ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing high-voltage live display devices generate electromotive force through the alternating magnetic field generated by high-voltage power transmission and distribution facilities. When the strength of the alternating magnetic field generated by high-voltage power transmission and distribution facilities is weak, the induced electromotive force and induced current generated in the high-voltage live display device are low. The flickering intensity of the flash unit of the high-voltage charged display device is weak, and the prompt signal of the flash unit must be clearly seen in a small angle range, which is easy to mislead people and thus poses a great safety hazard

Method used

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Examples

Experimental program
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Embodiment

[0023] Such as figure 1As shown, the high-voltage charged display device includes a casing and an internal circuit structure arranged in the casing, wherein the internal circuit structure includes a high-impedance attenuator, a magnetic core transformer, a rectifier, a charge-discharge oscillator, and a flash component connected in sequence. The magnetic core transformer has a primary side connected to the high-impedance attenuator and a secondary side connected to the rectifier. Both the primary side and the secondary side of the magnetic core transformer are equipped with coils, and the number of coil turns on the primary side of the magnetic core transformer is greater than that of the secondary side. The number of turns of the side coil. The rectifier includes a rectifier unit 4, a first capacitor C1, a first rectifier diode D1 and a first resistor R1, wherein the rectifier unit 4 preferably adopts a bridge rectifier circuit, the first resistor R1, the first rectifier diod...

Embodiment 2

[0027] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the charging and discharging oscillator is different. The charging and discharging oscillator in this embodiment includes a second capacitor C2 and a voltage-type trigger circuit. The capacitor C2 is connected in parallel, and the voltage-type trigger circuit includes a fourth capacitor C4, a first unidirectional thyristor SCR1, and a reversely connected second trigger diode D2, after the fourth capacitor C4 is connected in parallel with the reversely connected second trigger diode D2, and then It is connected in parallel with the input pin and the control pin of the first one-way thyristor SCR1.

Embodiment 3

[0029] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the charge and discharge oscillator is replaced. The charge and discharge oscillator in this embodiment includes a fifth capacitor C5, a sixth capacitor C6, a third diode D3, a fourth The diode D4, the fifth diode D5, the sixth diode D6, the seventh diode D7 and the second bidirectional switch diode DB2, wherein the second bidirectional switch diode DB2 is connected in series with the flash unit, and the fifth capacitor C5, the fifth diode D5 and the sixth capacitor C6 are sequentially connected in series to form a series branch connected to the rectifier, and the anodes of the third diode D3 and the fourth diode D4 are respectively connected to the fifth capacitor C5 and The anode of the sixth capacitor C6 is connected, the cathodes of both the third diode D3 and the fourth diode D4 are connected to the input end of the second bidirectional switch diode DB2, the sixth diode D6 an...

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PUM

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Abstract

The invention discloses a high-voltage electrifying display device which comprises a shell and an inner circuit structure arranged in the shell, wherein the inner circuit structure comprises a high-impedance attenuator, a magnetic core inductor, a rectifier, a charging / discharging oscillator and a flashing component which are connected in turn; the magnetic core inductor is provided with a primary side and a secondary side; the primary side is connected with the high-impedance attenuator; the secondary side is connected with the rectifier; the turns per coil of the primary side of the magnetic core inductor are more than the turns per coil of the secondary side; the flashing component comprises a second resistor, a third capacitor, a light emitting diode, a liquid crystal display screen and a third voltage-regulator tube which is reversely connected; the second resistor is in parallel connection with the liquid crystal display screen and then is serially connected with the third capacitor, so that a parallel serial branch is formed; and the light emitting diode and the third voltage-regulator tube which is reversely connected are both in parallel connection with the parallel serial branch formed by the second resistor, the third capacitor and the liquid crystal display screen. With such a structure, the high-voltage electrifying display device can ensure the current requirement of the flashing component when the strength of the magnetic field generated by the power transmission and distribution facility is weak, so that the flashing strength is enhanced and the potential safety hazard is eliminated.

Description

technical field [0001] The invention relates to a device for detecting whether high-voltage equipment has high-voltage electricity, in particular to a high-voltage charged display device. Background technique [0002] With the development of the national economy, the demand for electricity is also increasing. The application of high-voltage equipment in the power generation, distribution and transmission systems of the power system is becoming more and more extensive. Casualties and equipment damage, it is still necessary to configure live display devices on high-voltage power transmission and distribution facilities. The charged display device is a kind of prompt safety device installed directly on the high-voltage power transmission and distribution facilities, which can visually show whether the high-voltage power transmission and distribution facilities have operating voltage. The display window of the display flashes to warn people that the high-voltage power transmiss...

Claims

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Application Information

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IPC IPC(8): G01R19/155
Inventor 李胜峰
Owner SICHUAN LANXUNBAOER ELECTRONICS TECH
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