High-performance induction type electroscope

An inductive, electroscope technology, applied in the fields of electronics and electrical engineering, can solve problems such as misjudgment and inability to recognize induced electromotive force
CN102435823AInactive Publication Date: 2012-05-02ๅˆ˜ๅ–†
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ๅˆ˜ๅ–†
Publication Date
2012-05-02
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention relates to a high-performance induction type electroscope, which consists of a direct-current power supply DC, a key switch AN, an induction electrode A, an induction electrode B, a touch electrode C, a homopolar Darlington circuit, a heteropolar Darlington circuit and an acoustooptical reminding circuit. A traditional test pencil can only normally work by leading the test contact of the test pencil to be directly contacted with a charged metal object to form a complete loop. The high-performance induction type electroscope disclosed by the invention can normally work without being directly contacted with the charged object, and the charged object can be metal or an electrostatic object or a nonmetal body, such as a computer cathode ray tube (CRT) display or a color TV kinescope and the like. The high-performance induction type electroscope disclosed by the invention not only is suitable for detecting low voltage but also is suitable for monitoring 220 V alternating current with higher potential or the electrostatic object and is extremely handy in use. The various traditional test pencils can be completely replaced by the actions and the functions of the high-performance induction type electroscope.
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Description

technical field

[0001] The invention belongs to the technical field of electronics and electric engineering, and relates to a high-performance induction electroscope. Background technique

[0002] The common structure of test pens on the market is composed of test electric contacts, current limiting resistors, neon tubes, metal springs and hand electrodes connected in series. The test contact is in contact with the charged metal object under test, and the human hand touches the electrode to form a circuit. When the metal object under test has a higher voltage than the ground, the neon tube lights up, indicating that the metal object under test is charged. However, in actual use, there are many metal casings or metal components of electrical appliances that do not have dangerous electric shock voltages to the human body, and only generate electromotive force (voltage) through the distributed capacitance induction of the metal parts of the electrical appliances. The induced e...

Claims

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