Frequency conversion circuit for remote low-power-consumption high-sensitivity low-distortion interphone

A high-sensitivity, frequency-converting circuit technology, applied in the telephone structure, two-way line system station, etc., can solve the problems of short power supply life, need external power supply, power supply is not energy-saving, etc., to increase the service life and eliminate the transmission distance. , the effect of stable working condition

Inactive Publication Date: 2013-07-17
XINLANG SHANGHAI ELECTRONICS
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] There are requirements for the signal line system (three-wire and four-wire), external power supply is required, and the service life of the power supply is short; the power supply is not energy-saving, not environmentally friendly (lead-acid battery) and other shortcomings

Method used

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  • Frequency conversion circuit for remote low-power-consumption high-sensitivity low-distortion interphone
  • Frequency conversion circuit for remote low-power-consumption high-sensitivity low-distortion interphone
  • Frequency conversion circuit for remote low-power-consumption high-sensitivity low-distortion interphone

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Embodiment Construction

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] The invention is a frequency conversion circuit for remote low power consumption, high sensitivity and low distortion walkie-talkies, such as figure 1 As shown in , it mainly includes an audio signal acquisition module 1, which is different from the prior art in that: the output end of the audio signal acquisition module 1 is connected to the input end of the first audio signal frequency conversion module 2, and the first audio signal frequency conversion module The output end of 2 is connected with the input end of the frequency conversion output module 3, the output end of the frequency conversion output module 3 is connected with the input end of the frequency conversion receiving module 4 using a wireless signal, and the output end of the frequency conversion receiving module 4 is connected with the second audio signal frequency conversion module 5 The input e...

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Abstract

The invention discloses a frequency conversion circuit for a remote low-power-consumption high-sensitivity low-distortion interphone. The frequency conversion circuit is characterized in that the output end of an audio signal acquiring module is connected with the input end of a first audio signal frequency conversion module, the output end of the first audio signal frequency conversion module is connected with the input end of a frequency conversion output module, the output end of the frequency conversion output module is connected with the input end of a frequency conversion receiving module through a wireless signal, the output end of the frequency conversion receiving module is connected with the input end of a second audio signal frequency conversion module, and the output end of the second audio signal frequency conversion module is connected with the input end of an audio signal amplification module. The technical problems including small transmission distance, large power consumption, low sensitivity, large signal distortion degree and the like of a traditional interphone are thoroughly solved, the frequency conversion circuit is stable in working state, does not need an external power supply, can use a built-in lithium battery to provide power, effectively prolongs the service life of the power supply and enables the power supply to be energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of wired electronic intercom equipment, in particular to a frequency conversion circuit for remote low power consumption, high sensitivity, low distortion, anti-interference ability, energy-saving and environment-friendly elevator building intercom, and particularly relates to its circuit module connection structure. Background technique [0002] Comparative document, patent number: ZL201020162555.3, patentee: Zhuhai Deling Electronic Technology Co., Ltd., application date: 2010.04.13, this case discloses an "elevator walkie-talkie with telephone function", which includes the operating part, execution part, the operation part is electrically connected with the execution part, the operation part includes an input control single-chip microcomputer, and the execution part includes a power supply circuit, and the power supply circuit is the elevator intercom with telephone function The working power supply of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/02H04Q5/24
Inventor 何健胡旭亮陆建清李庆忠
Owner XINLANG SHANGHAI ELECTRONICS
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