Recent content by Abbylin

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    Problems about the Guitar pickup off-state leak

    Hi I'm using an AQY211EH PhotoMOS relay to switch guitar pickups via an Arduino, as shown below: Use of AQY211EH in guitar mod project This works great, with one minor exception: even when no power is applied to the Arduino (and, thus, the circuit as a whole), I still get a signal from the...
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    How to add Bass and treble control to the amplifier circuit?

    I have a little project in mind that I want to try. This picture below is a stereo amplifier circuit. The TDA2822M IC used in this project is a dual amplifier built into an eight pin chip. You can see the datasheet of it here: （http://www.kynix.com/uploadfiles/pdf9675/TDA2822M.pdf） It...
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    Questions to my guitar amplifier

    Hi I'm using an AQY211EH PhotoMOS relay to switch guitar pickups via an Arduino, as shown below: Use of AQY211EH in guitar mod project This works great, with one minor exception: even when no power is applied to the Arduino (and, thus, the circuit as a whole), I still get a signal from the...
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