Red Lights – RC4558 op amp based distrortion.

Well, again, we present a very simple circuit. As is also shown in the drawing, few parts. The circuit is based on a dual operational amplifier RC4558. But this is only half used, so there is only one using the op amp. Alternatively, you create an active tone control in the second operational amplifier section.
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Guitar Noise Gate

While playing the guitar many times there is a problem that unwanted noise can appear. Hence the need for a guitar noise gate.  It happened specifically to a high-gain circuit is very sensitive to the surrounding radio signal.
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