Tone adjusting circuit of television

Abstract

The invention discloses a tone adjusting circuit of a television. The tone adjusting circuit comprises an electrolytic capacitor C2, a capacitor C3 and a capacitor C4, a capacitor C5, a resistor R3, apotentiometer R4, a potentiometer R5, a resistor R6, a resistor R7, a resistor R8, and an amplifier U1B, the audio signals are input through the positive electrode of the electrolytic capacitor C2, and the negative electrode of the electrolytic capacitor C2 is connected with the resistor R3, the other end, connected with the end of the electrolytic capacitor C2, of the resistor R3 is connected with one fixed end of the potentiometer R5, and the other fixed end of the potentiometer R5 is connected with the resistor R8, the other end, connected with the end of the potentiometer R5, of the resistor R8 is connected with the output end of the amplifier U1B, the connection point of the output end of the amplifier U1B and the potentiometer R5 is the output end of the audio signal, one fixed endof the potentiometer R4 is connected to a circuit connecting the electrolytic capacitor c2 and the resistor r3, and the other end of the potentiometer R4 is connected with the output end of the audiosignal. Through the mutual cooperation of resistors, capacitors and the operational amplifier, the accuracy of output tone control is improved, and the tone of audio output of the television is improved.

Description

technical field [0001] The invention relates to the audio frequency output field of a TV set, in particular to a tone adjustment circuit of a TV set. Background technique [0002] Television (Television, TV, Video) refers to the use of electronic technology and equipment to transmit moving images and audio signals, that is, television receivers, and is also an important tool for broadcasting and video communication. Televisions were first invented by British engineer John Logie Baird. Invented in 1925. Televisions use electrical methods to transmit live visual images in real time. Similar to movies, television uses the visual residual effect of the human eye to display frame-by-frame still images, forming visually moving images. The sending end of the TV system converts each tiny part of the scene into electrical signals according to brightness and chromaticity, and then transmits them sequentially. At the receiving end, the brightness and chromaticity of each tiny part a...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the output tone control of the existing TV is relatively poor, resulting in poor tone color. the timbre

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