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Antenna isolator

A technology of antenna isolation and safety capacitance, which is applied in emergency protection circuit devices for limiting overcurrent/overvoltage, cable transmission adaptation, logic circuits using optoelectronic equipment, etc., can solve the problem of electric shocks to the human body of TV terminals that cannot be solved by antenna isolators Injury and other problems, to achieve good protection performance, ensure quality, and prevent interference

Active Publication Date: 2015-09-09
NINGBO XINGRUI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is that the existing antenna isolator cannot completely isolate the TV terminal from the outside and burns out, and the isolator is broken down into a short circuit state, which may cause electric shock damage to the human body

Method used

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Embodiment Construction

[0027] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0028] see Figure 1 to Figure 3 , the antenna isolator of the present invention includes a plastic shell 1, a metal shielding shell 2, a PCB board 3, an input connector 4, an output connector 5, a first Y2 safety capacitor C1, a second Y2 safety capacitor C2, a third Y2 safety capacitor capacitor C3 and the fourth Y2 safety capacitor C4. The plastic shell 1 includes a plastic upper shell 11 and a plastic lower shell 12 . Two adjacent side surfaces of the plastic upper shell 11 are respectively provided with upper arc-shaped openings 111 , and four corners are respectively provided with fixing columns 112 . Two adjacent side surfaces of the plastic lower shell 12 are respectively provided with lower arc-shaped openings 121 , and four cor...

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Abstract

The invention discloses an antenna isolator which comprises a PCB (Printed Circuit Board), an input interface, an output interface, a first Y2 safety capacitor and a second Y2 safety capacitor, wherein the first Y2 safety capacitor and the second Y2 safety capacitor are installed on the PCB; each of the output interface and the input interface comprises a metal shell and a metal core; the first Y2 safety capacitor is connected with the metal shell of the input interface and the metal shell of the output interface through the PCB; and the second Y2 safety capacitor is connected with the metal core of the input interface and the metal core of the output interface through the PCB. Direct-current signals and low-frequency signals from the input interface are isolated by the first Y2 safety capacitor and the second Y2 safety capacitor, so that the sound and the images of a television are not interfered; and moreover the first Y2 safety capacitor and the second Y2 safety capacitor are also capable of preventing giant surge caused by thunder, so even the television is broken down, the antenna isolator still can protect the television or a Set Top Box from being damaged by the thunder and can ensure the human body safety of a user.

Description

technical field [0001] The invention relates to an isolator, in particular to an antenna isolator capable of preventing televisions, set-top boxes and the like from being struck by lightning or interfered by signals. Background technique [0002] With the development of our country's economy, people's material culture has been greatly improved, and the use of TV sets in our country has become very popular, and more than 90% of them use cable TV access mode. With the promotion and development of digital TV in recent years, There are more and more modes connected by set-top boxes, and it has been developing year by year. However, due to the particularity of power supply conditions in our country, the grounding facilities are not perfect, and the grounding wire of the home is not really connected to the earth. When the home grid system When the zero line in the battery is open, the power supply of all electrical equipment in the home will be provided through the fire wire and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/10H05K9/00H03K19/14H02H9/02H02H9/04
Inventor 万勇张小国刘宏波范立明祁锦华
Owner NINGBO XINGRUI ELECTRONICS TECH
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