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Tuesday 20 August 2013

Peizo Pickup Transducer Preamp Stripboard Veroboard Layout


this is actually from a request from a guy called Jim (sorry don't know your last name) who wanted a peizo preamp because they are so expensive. they are essentially just a high impedance preamp
and you could probably use this for other things like hiZ microphones and whatever.

there is a gain control on this and it uses an op-amp that is able to function as a single rail op-amp which cuts down the component count which is always useful when you need to hide this inside a guitar cavity or something.



8 comments:

  1. sounds real cool.one prob . gain pot has no effect. could you please help

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  2. ok its all good now, thanks.

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  3. Hi, I've got the same problem. could you please help.

    Thanks

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  4. same here. i've build five of these, and the VR has no (audible effect). any ideas?!

    anyway, thanks for this layout.

    grmmsk.

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  5. This circuit is wrong! Either the power should be symmetrical +9V GND -9V or first stage input (pin3) should be biased at 4.5V through a voltage divider (now is at 0V through R1)

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  6. I can verify that this works great. I just built it to handle a 3 Piezo loom inside an acoustic and fired up nicely. Great signal/noise ratio. Well done! Shane

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  7. It is good, just adding a passive tone potensiometer for filter.

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