Homemadeelectric guitarcompressioneffects----- Guitar electronic amplifier

Homemade electric guitar compression effect, Guitar Electronic Amplifier Keywords: homemade electric guitar compression effect Homemade electric guitar compression effect The compression effect is one of the essential effects of guitar enthusiasts. Its function is to process the loudness of the sound signal, by compressing the strong signal, enhances the weaker signal, and control the loudness of the signal at a certain range. Inside. First, the principle of circuit The core of this circuit is a variable gain cross-conductor integrated operation amplifier CA3080, which is determined by the bias current provided by 5 foots. The other part of the circuit is a TL072. A preamplifier composed of R5, R15, and a full wave rectifier circuit composed of LMC64821IM, R6, R9, C4, D1, and the like. After the input signal of the electric guitar is enlarged by the front amplifier, the C1 is coupled to the CA3080, and the signal is output through the full wave rectification. The circuit becomes a DC signal, passes through R14, R9, and inputs 5 foots of CA3080 to control its gain change. When the signal is too strong, its output voltage is large. The current flowing into the 5 foot has also become large, so that the gain of the CA3080 becomes smaller, so that the output is reduced to achieve the purpose of dynamic compression. Second, some components selection The variable gain amplifier adopts a transconducting operation amplifier CA3080, and the preamplifier uses TL072. The full-wave rectifier circuit uses LMC64821IM, and the rectifier diode D1 uses 1 N4148, which uses a metal film resistance, CBD capacitor, and 红 宝 电 解 capacity. Third, how to use This effect uses a 9V power supply. J1 is a plug in the power supply and an input plug in electric guitar. DSL is used to indicate the operating status of the effect. R15 is used to control the input signal gain; R14 is used to control the gain of the transconductive operational amplifier. To achieve different compression effects. R13 is used to balance the current of the cross-guiding operation amplifier differential input. The noise generated when the transconducting op amp gain change is controlled, and the R12 is used to control the volume of the compressed effect.

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