CN208060665U - A kind of PCBA board high temperature ageing fixed time testing device - Google Patents

Abstract

The utility model provides a kind of PCBA board high temperature ageing fixed time testing device, including 220V AC powers, power switch, intermediate relay, the time relay, electromotion pilot lamp, power failure lamp and power supply adaptor；Wherein：The normally opened contact of the intermediate relay connects to form the first branch with power failure lamp, first normally-closed contact of intermediate relay connects to form the second branch with electromotion pilot lamp, the coil of intermediate relay connects to form third branch with the normally-closed contact of the time relay, and the coil of the time relay connect 220V AC powers with the input terminal of circuit after the first branch, the second branch, third branch circuit parallel connection by power switch, output end connects power supply adaptor by the second normally-closed contact of intermediate relay.The PCBA board degradation time can be made to be carried out according to the time standard of setting using the utility model, it is ensured that PCBA board degradation is met the technical standards, and unnecessary hidden danger of quality and power resource is avoided to waste.

Description

A kind of PCBA board high temperature ageing fixed time testing device

Technical field

The utility model belongs to circuit detection technique field, is related to a kind of PCBA board high temperature ageing fixed time testing device.

Background technology

Printed circuit board, also known as printed circuit board, english abbreviation PCBA（Assembly of Printed Circuit Board）, it is the support substrate of electronic component, is had a wide range of applications in the electronics industry.The study found that base In solder reflow techniques or the PCBA of wave soldering techniques, because of rosin joint present in production process, the work that even tin etc. can not avoid completely Skill defect causes product to there is certain inferior rate, it is necessary to PCBA is placed under hot environment and carry out degradation, to verify production The reliability of product state.And under normal circumstances, different function, different chip component PCBA need high-temperature circulation test when Between be also different.

In consideration of it, the existing high-temperature circulation test based on PCBA, be substantially by PCBA accesses power supply adaptor directly into Row degradation directly pulls out power supply adaptor after degradation time conditions meet.There is degradation in this way Time is uncontrollable, is not easy to be managed, and because of degradation time standard disunity, be easy to causeing the degradation time cannot be very Meet test requirements document well.If the degradation time is too short, the purpose of verification PCBA reliabilities can not be played, there are great matter Measure hidden danger；If degradation overlong time, it be easy to cause waste of energy and delivers waste.

Utility model content

The purpose of this utility model is that in view of the problems of the existing technology, a kind of easily controllable ageing time is provided PCBA board high temperature ageing fixed time testing device.

For this purpose, the utility model adopts the following technical solution：

A kind of PCBA board high temperature ageing fixed time testing device, including 220V AC powers, power switch, intermediate relay, The time relay, electromotion pilot lamp, power failure lamp and power supply adaptor；Wherein：

The normally opened contact of the intermediate relay connects to form the first branch with power failure lamp, the intermediate relay First normally-closed contact connects to form the second branch with electromotion pilot lamp, the coil of the intermediate relay and the time relay it is normal Closed contact connects to form third branch, after the coil and the first branch, the second branch, third branch circuit parallel connection of the time relay The input terminal of circuit connects 220V AC powers by power switch, output end is connected by the second normally-closed contact of intermediate relay Connect power supply adaptor.

Further, the power switch switchs for ship type.

The beneficial effects of the utility model are：PCBA board ageing time can be made according to setting using utility model device Time standard carry out, it is ensured that PCBA board degradation is met the technical standards, and avoids unnecessary hidden danger of quality and power resource Waste；In addition, the utility model has the characteristics that simple in structure, easy to operate, reliable, the at low cost, strong applicability of control.

Description of the drawings

Fig. 1 is the structure principle chart of the utility model.

Specific implementation mode

As shown in Figure 1, a kind of PCBA board high temperature ageing fixed time testing device, including 220V AC powers AC, power switch SW, intermediate relay, the time relay, electromotion pilot lamp L1, power failure lamp L2 and power supply adaptor ADP；Wherein：

The normally opened contact KA3 of intermediate relay connects to form the first branch with power failure lamp L2, and the of intermediate relay One normally-closed contact KA21 connects to form the second branch with electromotion pilot lamp L1, the coil KA1 and the time relay of intermediate relay Normally-closed contact KT2 connect to form third branch, the coil KT1 of the time relay and the first branch, the second branch, third branch The input terminal of circuit passes through intermediate relay by power switch SW connection 220V AC powers AC, output end after parallel connection second Normally-closed contact KA22 connection power supply adaptors ADP.And in the utility model, the preferred ship type switches of power switch SW.

The operation principle of the utility model is as follows：

By the coil KA1 connections of the normally-closed contact KT2 of the time relay and intermediate relay, to realize time relay The interlocking of device and intermediate relay.When specific operation, first according to the time requirement of PCBA board high-temperature circulation test, be the time after Fixed delay time is arranged in electric appliance, and PCBA board is then connected power supply adaptor ADP, is closed power switch SW.When initial, when Between the normally-closed contact KT2 of relay, the first normally-closed contact KA21 of intermediate relay, the second normally-closed contact KA22 be in closure State, power supply adaptor ADP, PCBA board and 220V AC powers AC are connected, and electromotion pilot lamp L1 is lighted, and prompt high temperature old Change on-test.After reaching preset delay time between when energized, the normally-closed contact KT2 of the time relay is opened, and is led Cause the coil KA1 dead electricity of intermediate relay, the normally opened contact KA3 closures of intermediate relay, the first normally-closed contact KA21 and second Normally-closed contact KA22 is opened, and electromotion pilot lamp L1 extinguishes, and power failure lamp L2 is lighted, and power supply adaptor ADP is prompted to power off, high Warm degradation terminates.

So, it can be achieved that the timing high-temperature circulation test of PCBA board, plugs PCBA board without manual time-keeping again, improve The degradation efficiency of PCBA board, and ensure that the consistency of degradation time.By adjusting the time relay delay when Between the degradation time of PCBA board can be adjusted flexibly, and then disclosure satisfy that inhomogeneity PCBA board product degradation requirement.

Claims (2)

1. a kind of PCBA board high temperature ageing fixed time testing device, which is characterized in that including 220V AC powers, power switch, in Between relay, the time relay, electromotion pilot lamp, power failure lamp and power supply adaptor；Wherein：

The normally opened contact of the intermediate relay connects to form the first branch with power failure lamp, and the first of the intermediate relay Normally-closed contact connects to form the second branch with electromotion pilot lamp, and the coil of the intermediate relay and the normally closed of the time relay are touched Point series connection forms third branch, coil and the circuit after the first branch, the second branch, third branch circuit parallel connection of the time relay Input terminal 220V AC powers are connected by power switch, output end passes through the second normally-closed contact of intermediate relay and connects electricity Source adapter.

2. a kind of PCBA board high temperature ageing fixed time testing device according to claim 1, which is characterized in that the power supply is opened Close is that ship type switchs.