Low-distortion power amplifier system based on noise suppression circuit

A noise suppression and power amplifier system technology, applied in power amplifiers, improved amplifiers to reduce nonlinear distortion, amplifiers, etc., can solve problems such as signal distortion and signal distortion, and achieve the effect of improving quality and avoiding signal distortion

CN105978505AInactive Publication Date: 2016-09-28成都特普瑞斯节能环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-09-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a low-distortion power amplifier system based on a noise suppression circuit. The system mainly comprises a static biasing circuit, a power amplifier circuit connected with the static biasing circuit, the noise suppression circuit connected with the static biasing circuit, a capacitor C1 of which cathode is connected with the noise suppression circuit and anode is taken as the input end of the power amplifier system, a resistor R1 of which one end is connected with the cathode of the capacitor C1 and other end is grounded, and so on. The system has a stable static working point. The waveforms of signals after amplification and the signals before amplification are ensured to be the same. Signal distortion resulting from distortion of the signals after amplification is avoided. The sound playing quality is greatly improved.
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Description

technical field

[0001] The invention relates to a power amplifier system, in particular to a low-distortion power amplifier system based on a noise suppression circuit. Background technique

[0002] The power amplifier system is the most basic equipment in the audio system. Its task is to amplify the weak electrical signal from the signal source to drive the speaker to emit sound. However, there is a big problem in the existing power amplifier system, that is, the amplified signal tends to be distorted to varying degrees, which leads to signal distortion and seriously affects the auditory effect. Contents of the invention

[0003] The purpose of the present invention is to overcome the defect that the current power amplifier system easily distorts the signal after amplifying the signal, resulting in signal distortion, and provides a low-distortion power amplifier system based on a noise suppression circuit.

[0004] The purpose of the present invention is achieved with th...

Examples

Embodiment

[0015] Such as figure 1 As shown, the present invention mainly consists of a static bias circuit, a power amplifying circuit connected to the static bias circuit, a noise suppression circuit connected to the static bias circuit, the negative pole is connected to the noise suppression circuit, and the positive pole is used as the input of the power amplifier system Capacitor C1 at one end, resistor R1 with one end connected to the negative pole of capacitor C1 and grounded at the other end, and capacitor C5 with negative pole grounded and positive pole connected to the power amplifier circuit after passing through resistor R10. The input terminal of the low distortion power amplifier system of the present invention is connected with an external signal source.

[0016] Among them, the static bias circuit consists of transistor VT1, transistor VT2, transistor VT3, transistor VT4, transistor VT5, transistor VT6, resistor R2, resistor R3, resistor R4, resistor R5, diode D1, diode D...