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Superheating arrester of music player

A music player, overheating technology, applied in the direction of instrument, cooling/ventilation/heating transformation, recording signal processing, etc., can solve the problems of wrong operation, increase the volume of the machine, reduce the output standard, etc., to prevent overheating and damage, circuit The effect of simple composition and improved stability

Inactive Publication Date: 2007-12-26
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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AI Technical Summary

Problems solved by technology

[0009] However, in the overheating prevention device of the music player of the above-mentioned prior art, in order to prevent the overheating of the music player, various accessories such as a comparator, a plurality of resistance elements and transistors must be installed.
Therefore, this increases the size of the machine, and even if the audio output standard is not lowered due to the error generated by the comparator and the resistance element, the output standard will be lowered due to the temperature problem, so that there will be problems such as erroneous operation

Method used

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  • Superheating arrester of music player
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Embodiment Construction

[0027] Embodiments of the overheating prevention device for a music player of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Fig. 4 is a schematic view showing the structure of the overheating prevention device of the music player of the present invention. In the composition of Fig. 1, it also includes the heat (temperature) generated by the operation of the above-mentioned power amplifier 80 detected near the above-mentioned power amplifier 80, and the output standard of the above-mentioned volume adjustment part 70 is adjusted according to the above-mentioned detected temperature. , the overheat prevention circuit 110 for preventing the power amplifier 80 from overheating.

[0029] In the above-mentioned overheat prevention circuit 110, there is a standard adjustment that can detect the operating temperature of the above-mentioned power amplifier 80, and change the internal impedance accordingly, and adjust the s...

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Abstract

A device used for preventing music player from overheat consists of input selection unit for selecting I / O audio signal, volume regulation unit for regulating selected output audio signal as per set volume standard, power amplifier for carrying out amplitude-increase on volume audio signal and for outputting processed signal out through loudspeaker, overheat avoiding circuit of standard regulation component for changing internal impedance and for regulating audio signal standard being switched into power amplifier.

Description

technical field [0001] The present invention relates to an overheat preventing device for a music player, and more particularly to an accessory IC (Integrated Circuit) that can prevent the temperature rise of the power amplifier of the music player when listening to music at a high volume for a long time Overheating prevention device for overheating and damaged music players. Background technique [0002] Fig. 1 is as the diagram of the general composition of common music player, and it is to select tuner (Tuner) 10 (position antenna 11) or tape player (CTP) 20 or disc player (CDP) by the input command of user 30 or AUX40 audio signal input selection section 50; execute the signal processing section 60 for signal processing output from the above-mentioned input selection section 50 audible frequency signal; adjust the audio output from the above-mentioned signal processing section 60 with the set volume standard The signal volume adjustment unit 70 ; a power amplifier 80 th...

Claims

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Application Information

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IPC IPC(8): G11B20/00G11B33/00H05K7/20
Inventor 高允昊
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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