Moving-coil cartridge amplifying circuit

Abstract

The invention discloses a moving-coil cartridge amplifying circuit, and the circuit comprises: a matching network electrically connected with a signal input end; low-frequency response filter circuits, wherein the low-frequency response filter circuits are symmetrically arranged and electrically connected with a positive power supply and a negative power supply respectively, and the low-frequency response filter circuits are electrically connected with the matching network; quiescent operating point circuits, wherein the quiescent operating point circuits are electrically connected with the low-frequency response filter circuit and the matching network, and the quiescent operating point circuits are symmetrically arranged and electrically connected with a positive power supply and a negative power supply respectively; an amplifying unit, wherein the amplifying unit comprises a first transistor and a second transistor, and the amplifying unit is electrically connected with the matching network, the low-frequency response filter circuit, the quiescent operating point circuit, a signal input end and a signal output end; and an output end load, wherein the output end load is electrically connected with the amplification unit and the signal output end. The advantages of low noise, low distortion, high signal-to-noise ratio, high dynamic range and wide frequency response are realized.

Description

technical field [0001] The invention relates to the field of amplifying circuit technical equipment, in particular to a moving-coil cartridge amplifying circuit. Background technique [0002] The existing MC phono amplifier circuit, in order to achieve better output effects, such as: low noise, low distortion, high signal-to-noise ratio, etc. Generally, a variety of modules or circuits are integrated together to improve the output effect, resulting in an overly complex overall circuit structure, which is cumbersome and time-consuming to debug. [0003] At the same time, the existing MC phono amplifier circuit often has a DC voltage at its input end, resulting in an increase in the DC offset of the circuit and increase in circuit distortion, thus making it impossible to obtain a better output effect. The adaptability and compatibility of external modules and circuits are poor, and re-adjustment and design are often required. [0004] Therefore, there is an urgent need for a...

AI Technical Summary

Problems solved by technology

Generally, a variety of modules or circuits are integrated together to improve the output effect, resulting in an overly complex overall circuit structure, which is cumbersome and time-consuming to debug.

[0003] At the same time, the existing MC phono amplifier circuit often has a DC voltage at its input end, which causes the DC offset of the circuit to increase and the circuit distortion to increase, thus making it impossible to obtain a better output effect.

The adaptation and compatibility of external modules and circuits are poor, and often need to be re-adjusted and designed

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