CN2060952U

CN2060952U - Interference-resisting lightning arrestors for television receivers

Info

Publication number: CN2060952U
Application number: CN 89221694
Authority: CN
Inventors: 于延春; 纪宪伦; 纪宪秀; 于博
Original assignee: 于延春
Priority date: 1989-12-29
Filing date: 1989-12-29
Publication date: 1990-08-22

Abstract

The utility model relates to an interference-resisting lightning resistor for television receiver, belonging to a safe protection device for television receivers. One route of the input end of the interference-resisting lightning resistor for television receiver is connected with an output end of the interference-resisting lightning resistor for television receiver through a blocking capacitor; the other route of the input end is connected with ground through an air gap spark discharge part of parallel inductance impedance parts. The inductance impedance parts, the air gap spark discharge part and the blocking capacitor are installed fixedly in a plastic box body; the input end and the output end are respectively provided with a binding post which is connected with an input feed line and an output feed line. The utility model which has the advantages of simple structure, convenient use, etc. can be used for a community antenna system and the earth leakage protection of an external antenna; the interference-resisting lightning arrestor for television receivers are used for resisting interference in a sunny day and are used for lightning protection in a rainy day.

Description

Interference-resisting lightning arrestors for television receivers

The utility model belongs to motor receiver safety guard.

If the infield of television receiver needs the dress exterior aerial to improve reception away from the television transmitting station.When its sensitivity improves, interference signal also enters television receiver to some extent, because antenna is directly to link to each other with television receiver, before summer, thunderstorm arrived, for preventing that television receiver from meeting accident, people often cut off the line of antenna and television receiver, bring a lot of troubles with regard to the user who gives television receiver like this.

The purpose of this utility model provides a kind of when thunderstorm arrives, the lightning arrester that television receiver and antenna are cut off.

Lead up to capacitance C1, C2 and output c, the d of the utility model input a, b join (seeing Fig. 1, Fig. 2), another road of input a, b through and the inductive impedance part and the air-gap sparkover part that connect join with ground wire.Inductive impedance partly is to be made of two groups of low-pass filtering coils and high-pass filtering coil L3, the L4 and filter capacitor C3, the C4 that connect series connection, and air-gap sparkover part is joined by the gap and the sheet that once discharges by the sheet that discharges on the tool at regular intervals two.Inductive impedance part, air-gap sparkover part, capacitance all are fixedly mounted in the plastic box body (1); Input, output are equipped with binding post, link to each other with incoming feeder, output feeder (or coaxial wire).

The utlity model has advantages such as simple in structure, easy to use, can be used for the earth leakage protective of community antenna system and external antenna, it is anti-interference that fine day is used for, and the rainy day is used to take shelter from the thunder.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model circuit theory diagrams.

Fig. 3 removes the structural representation of binding post for the utility model.

Fig. 4 is a simple type structural representation of the present utility model.

Fig. 5 is simple type circuit theory diagrams of the present utility model.

Discharge sheet of the present utility model can be made when producing wiring board, and the spacing of last two discharge sheets is 2mm-5mm, and last two discharge sheets are 0.4mm-0.5mm with the following discharge sheet gap that links to each other with ground wire.The enamelled wire line of low-pass filtering coil L1, L2 directly is φ 1-2mm, and number of turn 10-20, the enamelled wire line of high-pass filtering coil L3, L4 directly are φ 1-2mm, number of turn 2-5.Capacitance C1, C2 and filter capacitor C3, C4 all adopt mica capacitor or ceramic disc capacitor.

Input, output also can remove binding post (2), adopt feeder line (4) directly to link to each other, and ground wire also can adopt flexible cord (5) to draw (see figure 3).When making simple type, the inductive impedance part is by respectively being wound with enamelled wire (6) 3-12 circle on the two hole magnet rings (7), one end of every group of coil is connected with feeder tie post respectively, link to each other respectively with the last two discharge sheets (8) of discharge portion simultaneously, the other end of magnetic ring coil all links to each other with a discharge sheet (9) of bottom, the spacing of last two discharge sheets is 3-15mm, last two discharge sheets are 0.5-1.5mm with the gap (10) of the sheet that discharges down, do not establish the path that input is connected with output through capacitance.Magnet ring adopts television receiver adaptation magnet ring commonly used, and during use, input links to each other with incoming feeder, and output links to each other with output feeder, and earth terminal (3) links to each other with the earth.

Claims

1, a kind of anti-interference lightning arrester of television receiver, lead up to capacitance C1, C2 and output c, the d that it is characterized in that input a, b join, another road of input a, b through and the inductive impedance part and the air-gap sparkover part that connect join with ground wire; Inductive impedance partly is to be made of two groups of low-pass filtering coil L1, L2 and high-pass filtering coil L3, the L4 and filter capacitor C3, the C4 that connect series connection, air-gap sparkover part by the sheet (8) that discharges on the tool at regular intervals two by gap (10) and the sheet that once discharges join.

2,, it is characterized in that the spacing of two discharge sheets (8) is 2mm-2mm according to the anti-interference lightning arrester of the described television receiver of claim 1; The enamelled wire line of low-pass filtering coil L1, L2 directly is φ 1-2mm, and the number of turn is 10-20; The enamelled wire line of high-pass filtering coil L3, L4 directly is φ 1-2mm, and the number of turn is 2-5.

3, according to the anti-interference lightning arrester of the described television receiver of claim 1, it is characterized in that when making simple type, the inductive impedance part is by respectively being wound with enamelled wire (6) 3-12 circle on the two hole magnet rings (7), one end of every group of coil is connected with feeder tie post respectively, link to each other respectively with the last two discharge sheets (8) of discharge portion simultaneously, the other end of magnetic ring coil all links to each other with a discharge sheet (9) of bottom, and the spacing of last two discharge sheets is 3-15mm; Do not establish the path that input is connected with output through capacitance.