Voice prompting circuit used for light wave receiving
A voice prompt and circuit technology, applied in the direction of electromagnetic receivers, etc., can solve the problems of unfavorable promotion and use, complicated circuit design, inconvenient portability, etc., and achieve good application prospects, simple circuit, and easy portability
Inactive Publication Date: 2014-12-03
丁勇
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to overcome the problems of the existing light wave receivers, which are bulky, inconvenient to carry, complicated in circuit design, relatively high in cost, and unfavorable for popularization and use
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] 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.
[0014] Such as figure 1 As shown, a voice prompt circuit for light wave reception includes a battery pack G, an operational amplifier A, a voice power amplifier M, a speaker S, and a photodiode D. The anode of the battery pack G is connected in series with a switch K, and the output voltage is 12V The positive pole of the battery pack G is respectively connected to the positive voltage input terminals of the operational amplifier A and the voice power amplifier M, the negative pole of the battery pack G is respectively connected to the negative voltage input terminals of the operational amplifier A and the voice power amplifier M, and the operational amplifier A is a μA741 integrated chip , the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a voice prompting circuit used for light wave receiving. The voice prompting circuit comprises a battery pack, an operational amplifier, a voice power amplifier, a loud speaker and a photodiode. The battery pack powers the operational amplifier and the voice power amplifier. The positive electrode of the photodiode is connected with the reverse input end of the operational amplifier, the negative electrode of the photodiode is connected with the forward input end of the operational amplifier, the output end of the operational amplifier is connected with the reverse input end of the operational amplifier through a feedback resistor, the output end of the operational amplifier is further connected with the negative electrode of the battery pack through a slide rheostat, the leading-out end of the slide rheostat is connected with the reverse input end of the voice power amplifier, the forward input end of the voice power amplifier is connected with the negative electrode of the battery pack and the output end of the voice power amplifier is connected with the loud speaker. The voice prompting circuit used for light wave receiving is simple, convenient to carry, low in power consumption, safe, reliable and low in cost and has good application prospects.
Description
technical field [0001] The invention relates to a voice prompt circuit for light wave reception, which belongs to the technical field of electronic measurement. Background technique [0002] Lightwave receivers are used to receive lightwave signals for testing. They have been widely used in geological exploration and mine collection. Especially for underground workers, it is very necessary to carry lightwave receivers. When an accident occurs, it is convenient for underground The working staff found the light source in order to find the exit at the first time. However, the existing light wave receivers on the market are large in size, not easy to carry, complex in circuit design, and relatively high in cost, which is not conducive to popularization and use. Contents of the invention [0003] The purpose of the present invention is to overcome the problems of the existing light wave receiver, which are bulky, not easy to carry, complex circuit design, relatively high cost, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/60
Inventor 丁勇
Owner 丁勇