Industrial frequency sine-wave signal generator for high voltage electroscope

Abstract

The invention relates to an industrial frequency sine-wave signal generator for a high voltage electroscope. The signal generator is mainly characterized in that the signal generator comprises a battery storehouse with batteries and a circuit board which are arranged in a casing, wherein the left end of the front end surface of the casing is provided with an undervoltage indicating lamp hole and a power source indicating lamp hole; the right end is provided with a power source button switch hole with a button switch, the upper end surface is provided with output jacks, one output jack is electrically connected with a plug connected with one end of a wire with a metal clip on the other end; the circuit board comprises an undervoltage indicating circuit, a high-frequency oscillation circuit, a rectification voltage-regulating circuit and an industrial frequency sine-wave signal-generating circuit, and the signal outputted by the industrial frequency sine-wave signal-generating circuit is the industrial frequency sine-wave AC signal. The industrial frequency sine-wave signal generator is used to detect the whole electronic loop of the high voltage electroscope from the probe to the negative terminal of the power source, has safety and reliability and can be used by the operating personnel of the electric power industry and the related industries.

Description

Technical field: [0001] The invention relates to a signal generator, in particular to a power frequency sine wave signal generator for a high voltage electroscope. Background technique: [0002] The high-voltage electroscope is a tool used to check whether the high-voltage lines and power equipment are live. In order to ensure the effective work of the high-voltage electroscope and protect the personal safety of the electrician operators, it is necessary to check whether the high-voltage electroscope is intact before using the electroscope. , and it also needs to be tested on known high-voltage lines or equipment to ensure its good performance, and then tested on high-voltage lines or equipment that need to be tested, otherwise it may endanger the personal safety of electrical operators or lead to misjudgment. If the on-site high-voltage line is damaged and there is no live equipment, one is to rely on the self-inspection circuit of the high-voltage electroscope itself for ...

AI Technical Summary

Problems solved by technology

If the on-site high-voltage line is damaged and there is no live equipment, one is to rely on the self-inspection circuit of the high-voltage electroscope itself for inspection, but the self-inspection circuit part of this high-voltage electroscope can only be used for the detection circuit part and the indicator circuit part. inspection, but cannot check the contact between the output end of the detection circuit part and the contact probe base, the contact probe base and the contact probe, there is a blind area, that is, the entire circuit of the high-voltage electroscope cannot be inspected. Therefore, it is easy Misjudgment of the high-voltage electroscope, causing hidden dangers of accidents, the other uses the existing high-voltage electroscope signal generator, this signal generator uses a square wave signal to detect the high-voltage electroscope, and the square wave signal contains In addition to power frequency components, it also contains a large number of harmonic components. Square wave signals are used for detection. Both power frequency signals and harmonic components may cause high-voltage electroscopes to work. At the same time, square wave signal detection is used to prevent interference signals generated near the grid It may also cause the signal detection device to malfunction or refuse to operate. In this way, the detection accuracy will be affected to a certain extent. In addition, the existing high-voltage electroscope signal generator can only check the faults of some circuits, and such defects are prone to electrical problems. Accidents involving operator casualties and electrical equipment damage

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