High-voltage alarm circuit
An alarm circuit, high voltage technology, applied in the circuit field
Inactive Publication Date: 2014-10-22
SUZHOU GUJI ELECTRONICS TECH
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Problems solved by technology
For the high-voltage alternating current with certain dangers, there is no alarm that can prompt the dangerous state close to the high-voltage alternating current. Therefore, it is necessary to provide a high-voltage alarm circuit to warn the dangerous state close to the high-voltage alternating current. Provide safety for personnel working under high voltage alternating current
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[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0017] Such as figure 1 As shown, the high-voltage alarm circuit of the present invention is composed of a detection electrode A, a four-sound alarm integrated circuit IC, a field effect transistor BG1, transistors BG2, BG3, a step-up transformer T, a piezoelectric ceramic sheet HTD, and a 3V power supply. The circuit is controlled on and off by switch K.
[0018] The detection electrode A is a single-strand hard plastic wire with a diameter of 1mm and a length of about 10cm. One end is connected to the grid of the field effect transistor BG1, and the other end is rolled into a small circle for detecting high-voltage objects.
[0019] The drain of the field effect transistor BG1 is connected t...
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The invention discloses a high-voltage alarm circuit. The high-voltage alarm circuit comprises a detection electrode, a quadraphonic alarm integrated circuit, a field effect transistor, a first transistor and a power source. The drain electrode of the field effect transistor is connected with the base electrode of the first transistor, the source electrode of the field effect transistor is connected with the cathode of the power source, the emitter electrode of the first transistor is connected with the cathode of the power source, the emitter electrode of the first transistor is simultaneously connected with the quadraphonic alarm integrated circuit to supply power to the quadraphonic alarm integrated circuit, and the collector electrode of the first transistor is connected with the anode of the power source. According to the high-voltage alarm circuit provided by the invention, high-voltage objects are detected by use of the detection electrode, the quadraphonic alarm integrated circuit (IC) emits music alarm signals to warn about a dangerous state of being quite close to high-voltage alternating current, and the alarm distance can be adjusted and changed for providing a safety guarantee for personnel working under the condition of the high-voltage alternating current.
Description
[0001] technical field [0002] The invention relates to a high-voltage alarm circuit, which belongs to the technical field of circuits. Background technique [0003] Many circuits for alarming are designed in the prior art to prompt alarming in various situations. For the high-voltage alternating current with certain dangers, there is no alarm that can prompt the dangerous state close to the high-voltage alternating current. Therefore, it is necessary to provide a high-voltage alarm circuit to warn the dangerous state close to the high-voltage alternating current. Provide safety for personnel working under high voltage alternating current. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a high-voltage alarm circuit that can warn of dangerous states close to high-voltage alternating current and provide safety guarantee for personnel working under high-voltage alternating...
Claims
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IPC IPC(8): G08B21/02
Inventor 罗宇新
Owner SUZHOU GUJI ELECTRONICS TECH