DE2420258A1 - Automatic diagnostic appts for electric appliances - functions can be measured via mains input plug - Google Patents

Abstract

The automatic testing apparatus is provided with five function testing groups housed within itself, and depending upon their setting, can give various results. The functions, especially those of a small domestic appliance, can be measured through the mains input. The tested results are immediately and easily reached by virtue of the lighting up of control lamps. A time switch automatically and consecutively connects the mains connection, plugged into a corresponding socket, to different function testing groups, and stores the results. The procedure can be executed by non-technical personnel and no confusions can arise when the testing course is set in operation.

Description

Diagnostic Equipment for Electrical Equipment The invention relates to an automatic diagnostic device for electrical devices, especially small household appliances, to which a device to be tested can be connected with its mains plug and with which the measurable functions at the mains input of the test object can be checked, whereby the diagnostic result is displayed immediately by the lighting of control lamps and is easy to read.

There are test devices for electrical household appliances known.

The mains connection plug of a test item is plugged into a socket of a such device is plugged in, after which, for example, a laboratory engineer individual Measures device functions precisely. The individual device functions are in separate Function groups can be checked. The DUT's mains plug must therefore also be used be plugged into a socket of the individual function test group in order to be able to use this also to be able to be checked.

In this way, checking a test item is not only time-consuming; in particular, it requires a relatively high level of knowledge of the test device to be operated or on the function and setting of the individual functional test groups.

It is the object of the invention to provide an automatically operating diagnostic device to create that does not require any special prior knowledge to operate.

The task at hand is for an automatic diagnostic device initially mentioned type solved in that, according to the invention, a timer the mains input of the DUT plugged into a socket provided on the device automatically connects one after the other with different functional test groups.

With regard to the connection of a device under test, in this way no mix-ups occur, and the testing process once started runs automatically without the involvement of the auditor. The exam can be learned by anyone Examiner can be accepted without difficulty.

The invention is illustrated schematically with reference to the drawing Embodiment explained in more detail.

The automatic diagnostic device according to the invention has five functional test groups 1 to 5, which are arranged within the device and which are used when they are controlled make several statements about the function of the test item.

The DUT is plugged into a socket 7 with its mains plug, which is connected to a power supply line 9 via a protective circuit, in which there is a timer 11 is located.

This timer 11 sets the functional test groups one after the other 1 to 5 in operation as soon as the mains plug of a device under test is plugged into socket 7 and the device is started with the aid of switch 13.

The individual functional test groups have different indicator lights Mistake. The lamps in column a indicate what exam within of the device is currently being made. These lamps can be kept white, for example be.

The remaining indicator lamps arranged in rows b will the result of the diagnosis is displayed, namely whether the device is functioning normally or if it has a bug. During normal operation, z. B. one of the lamps b in a green color. Has the DUT within the corresponding function group a fault, for example a short circuit, then lights up instead of the green indicator lamp z. B. one of the red indicator lights on.

The individual functional test groups carry out the following test: Group 1 checks continuity; Group 2 checks the protective conductor connection; Group 3 checks Touching the protective conductor with the group 4 mains conductor checks the contact the line conductor with another line conductor; Group 5 checks the current consumption.

For this purpose, function test group 5 is equipped with an ammeter 15 equipped. This ammeter 15 can, if desired, automatically from one Switch the measuring range to another.

An additional test possibility of the device is through the suction connection 17 given. Are the power plug of a vacuum cleaner in a socket 19 and the The suction hose is plugged into the suction connection 17, then it can be checked on a manometer 21 determine the suction power of the vacuum cleaner.

Claim:

Claims (1)

Claim: Automatic diagnostic device for electrical devices, In particular, small household appliances to which a device to be tested is connected to its mains plug can be connected and with which the functions that can be measured at the network input of the test object are verifiable and from which the result is immediately easy to read, thereby characterized in that a timer (11) connects to a socket provided on the device (7) the plugged-in mains input of the device under test automatically one after the other with different Function test groups (1 to 5) connects and saves the test result.