Circuit fault setting equipment

Abstract

The invention discloses circuit fault setting equipment and relates to a fault setting device teaching apparatus. The circuit fault setting equipment comprises a microprocessor, keys, an LCD (Liquid Crystal Display), a driving circuit of the LCD, a memory and a fault point selecting circuit, wherein the keys, the LCD, the driving circuit of the LCD, the memory and the fault point selecting circuit are connected with the microprocessor respectively; the fault point selecting circuit comprises at least one fault point driving circuit capable of setting the on / off, a normally-open open-circuit fault point relay set correspondingly driven by the fault point driving circuit capable of setting the on / off, at least one fault point driving circuit capable of setting poor contact, a normally-open poor contact fault point relay set correspondingly driven by the fault point driving circuit capable of setting poor contact, at least one fault point driving circuit capable of setting grounding short circuit, a grounding short circuit normally-open fault point relay set correspondingly driven by the fault point driving circuit capable of setting grounding short circuit, a 1S clock period pulse driving circuit and a pulse relay provided with a group of normally-open contacts and normally-closed contacts and corresponding to the 1S clock period pulse driving circuit. The circuit fault setting equipment has the advantages that the microprocessor can be operated by the keys to drive corresponding relay coils to be energized or de-energized to achieve the purpose of fault setting, and the teaching effect and efficiency are improved.

Description

technical field [0001] The invention relates to a fault setting device teaching instrument, in particular to a circuit fault setting device [0002] , especially suitable for teaching and training of circuit troubleshooting in colleges and technical secondary schools and training institutions. Background technique [0003] In the teaching of universities, technical secondary schools and some professional training institutions, teachers often need to set faults in the circuits of teaching instruments, and then students analyze, test and eliminate the faults, so as to train students' professional skills. Present way generally all is to adopt methods such as unclamping the connecting screw on the terminal block, inserting insulated wire sheath or breaking the wire, and artificially disconnecting the wire. Although it can also play a training role, because this method sometimes does not need to conduct circuit test analysis based on the fault phenomenon, as long as simple metho...

AI Technical Summary

Problems solved by technology

Although it can also play a training role, because this method sometimes does not need to conduct circuit test analysis based on the fault phenomenon, as long as simple methods such as checking the terminal screws can find flaws, the expected effect cannot be achieved, and even seriously affects the training. Effect

In addition, this method is cumbersome and time-consuming to set the fault operation, and it is easy to cause safety hazards. At the same time, frequent operations will greatly reduce the life of the device and increase the consumption of consumables.

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