The utility model discloses a microphone amplifying circuit, which belongs to the field of electricity. The utility model comprises a signal source, the microphone series resistor and an external resistor, which is composed of the three part of the series branch is connected with the operational amplifier, the amplifier and external resistors in series. Through the arrangement, the utility model can overcome the existing microphone sound when using the complex circuit at the same time many people chorus defects due to the increased cost of increasing the circuit, not only has the advantages of simple circuit, at the same time without the need of a plurality of circuit, greatly saves the cost, suitable for use.
【技术实现步骤摘要】
【技术保护点】
一种话筒放大电路，其特征在于，包括依次串联的信号电源、话筒内电阻以及外部电阻，其中由上述三者组成的串联支路上还连接有运算放大器，该运算放大器与外部电阻串联。
【技术特征摘要】
【专利技术属性】
技术研发人员：王科，
申请(专利权)人：四川高软软件科技有限公司，
类型：实用新型
国别省市：
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