CN204964567U

CN204964567U - Full -bridge rectifier forward surge test fixture

Info

Publication number: CN204964567U
Application number: CN201520788253.XU
Authority: CN
Inventors: 张兴武; 王强; 易明军
Original assignee: Chongqing Pingwei Enterprise Co Ltd
Current assignee: Chongqing Pingwei Enterprise Co Ltd
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2016-01-13
Anticipated expiration: 2025-10-12

Abstract

The utility model discloses a full -bridge rectifier forward surge test fixture, including test seat, double -pole double -throw and single -pole double -throw, full -bridge rectifier installs on the test seat to it draws forth full -bridge rectifier positive terminal, negative pole end, first lead wire and second lead wire to pass test the seat, last A pin, B pin, C pin, A1 pin, B1 pin and the C1 pin of being provided with of double -pole double -throw, last E pin, F pin and the G pin arranged of single -pole double -throw, can realize through stirring double -pole double -throw and single -pole double -throw switch that four diodes of full -bridge rectifier insert forward surge generator respectively and test. Avoid constantly switching in test lead wire and direction, of the subtracting operating procedure has improved test efficiency.

Description

Full-bridge rectifier forward surge test fixture

Technical field

The utility model belongs to electronic components test technical field, is specifically related to a kind of full-bridge rectifier forward surge test fixture.

Background technology

Burn-in test test is a very important link in Quality of electronic products controls, and is the important leverage of electronic product reliability; Current forward surge generator test test fixture is tested mainly for single diode, as shown in Figure 1, forward surge generator only has one group of test loop (positive pole and negative pole), first the positive pole of the negative pole of diode with forward surge generator is connected before test, the positive pole of diode is connected with the negative pole of forward surge generator, during test, electric current flows out from the positive pole of forward surge generator, after diode, return forward surge generator from negative pole, form a test loop.

There are four diodes its inside of the full-bridge rectifier of general use, need test separately every diode, to reaching the Efficient Evaluation to the anti-forward surge capacity of this product, in test process, often test a diode and all need again switched lead and direction, be connected to positive pole and the negative pole of forward surge generator, complex operation step, work efficiency is lower.

Utility model content

It is simple that the utility model aims to provide a kind of annexation, can simplify the full-bridge rectifier forward surge test fixture of test operating procedure.

For this reason, the technical scheme that the utility model adopts is: a kind of full-bridge rectifier forward surge test fixture, comprises test bench, double-point double-throw switch and single-pole double-throw switch (SPDT);

Full-bridge rectifier is arranged on described test bench, and draw full-bridge rectifier positive terminal, negative pole end, the first lead-in wire and the second lead-in wire by test bench, described first lead-in wire is drawn between the diode of full-bridge rectifier two series connection, and described second lead-in wire is drawn between the diode of two other series connection of full-bridge rectifier;

Described double-point double-throw switch is provided with A pin, B pin, C pin, A1 pin, B1 pin and C1 pin, wherein A pin and A1 pin are the hinged pin of double-pole, the direction of described B pin and C pin corresponding A pin free-swinging knife double-throw, the direction of described B1 pin and C1 pin corresponding A 1 pin free-swinging knife double-throw, and B pin and B1 pin are thrown to identical, described A pin connects forward surge generator positive pole, described A1 pin connects forward surge generator negative pole, described B pin connects full-bridge rectifier negative pole end, and described C1 pin connects full-bridge rectifier positive terminal;

Described single-pole double-throw switch (SPDT) is furnished with E pin, F pin and G pin, described E pin is the hinged pin of hilted broadsword, and described C pin is connected with E pin with after B1 pins in parallel, and described F pin and second goes between and is connected, and described G pin and first goes between and is connected;

The above-mentioned wire that all uses connects.

The beneficial effects of the utility model are: only need once by between full-bridge rectifier forward surge test fixture access forward surge generator and full-bridge rectifier, namely four diodes realizing full-bridge rectifier by stirring double-point double-throw switch and single-pole double-throw switch (SPDT) switch access forward surge generator respectively and test, avoid in test continuous switched lead and direction, simplify operation steps, improve test efficiency.

Accompanying drawing explanation

Fig. 1 mono-diode forward surge test schematic diagram;

Full bridge rectifier circuit figure in Fig. 2 the utility model;

Fig. 3 the utility model circuit assembling schematic diagram.

Embodiment

Below by embodiment also by reference to the accompanying drawings, the utility model is described in further detail:

As shown in figures 2-3, a kind of full-bridge rectifier forward surge test fixture, forms primarily of test bench, double-point double-throw switch K1 and single-pole double-throw switch (SPDT) K2;

The full-bridge rectifier of the present embodiment is provided with four diodes D1, D2, D3 and D4, wherein D1 and D3 series connection, D2 and D4 connects, and the diodes in parallel of two groups of series connection is arranged, full-bridge rectifier is arranged on test bench, and drawn between D1 and D3 by test bench extraction full-bridge rectifier positive terminal, negative pole end, the first lead-in wire 1 and the second lead-in wire 2, first lead-in wire 1, the second lead-in wire 2 is drawn between D2 and D4;

Double-point double-throw switch K1 is provided with A pin, B pin, C pin, A1 pin, B1 pin and C1 pin, wherein A pin and A1 pin are the hinged pin of double-pole, the direction of B pin and C pin corresponding A pin free-swinging knife double-throw, the direction of B1 pin and C1 pin corresponding A 1 pin free-swinging knife double-throw, and B pin and B1 pin are thrown to identical, A pin connects forward surge generator positive pole, A1 pin connects forward surge generator negative pole, B pin connects full-bridge rectifier negative pole end, and C1 pin connects full-bridge rectifier positive terminal;

Single-pole double-throw switch (SPDT) K2 is furnished with E pin, F pin and G pin, E pin is the hinged pin of hilted broadsword, and C pin is connected with E pin with after B1 pins in parallel, and F pin and second goes between and 2 to be connected, and G pin and first goes between and 1 to be connected;

The above-mentioned wire that all uses connects.

When double-point double-throw switch K1 throws in B pin and B1 Pin locations, A pin is communicated with B pin, and A1 pin is communicated with B1 pin, and single-pole double-throw switch (SPDT) K2 throws when F Pin locations, and E pin is communicated with F pin, and now diode D4 access test loop can be tested; Stir single-pole double-throw switch (SPDT) K2 to throw when G Pin locations, E pin is communicated with G pin, and now diode D3 accesses test loop; Again stir double-point double-throw switch K1 to be in and to throw when C pin and C1 Pin locations, A pin is communicated with C pin, and A1 pin is communicated with C1 pin, and now diode D1 accesses test loop; Again stir single-pole double-throw switch (SPDT) K2 to throw when F Pin locations, E pin is communicated with F pin, and now diode D2 accesses test loop; Namely by stirring double-point double-throw switch K1 and single-pole double-throw switch (SPDT) K2, four diodes D1, D2, D3 and D4 just can access loop respectively and carry out forward surge test, save test operation step, raise the efficiency.

Claims

1. a full-bridge rectifier forward surge test fixture, is characterized in that: comprise test bench, double-point double-throw switch (K1) and single-pole double-throw switch (SPDT) (K2);

Full-bridge rectifier is arranged on described test bench, and draw full-bridge rectifier positive terminal, negative pole end, the first lead-in wire (1) and the second lead-in wire (2) by test bench, draw between the diode that described first lead-in wire (1) connect from full-bridge rectifier two, described second lead-in wire (2) is drawn between two other diode of connecting of full-bridge rectifier;

Described double-point double-throw switch (K1) is provided with A pin, B pin, C pin, A1 pin, B1 pin and C1 pin, wherein A pin and A1 pin are the hinged pin of double-pole, the direction of described B pin and C pin corresponding A pin free-swinging knife double-throw, the direction of described B1 pin and C1 pin corresponding A 1 pin free-swinging knife double-throw, and B pin and B1 pin are thrown to identical, described A pin connects forward surge generator positive pole, described A1 pin connects forward surge generator negative pole, described B pin connects full-bridge rectifier negative pole end, described C1 pin connects full-bridge rectifier positive terminal,

Described single-pole double-throw switch (SPDT) (K2) is furnished with E pin, F pin and G pin, described E pin is the hinged pin of hilted broadsword, described C pin is connected with E pin with after B1 pins in parallel, described F pin go between with second (2) be connected, described G pin go between with first (1) be connected;

The above-mentioned wire that all uses connects.