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Thread: 3-Knob Tube Driver Build.

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  1. #20
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by Marcel View Post
    For the sake of understanding I wanted to keep the numbers simple there Doc..

    Did you look at the Valvecaster pdf..???

    Yep, had a look at it and it looks like it's not that hard to build at all, I seem to remember building it a couple of years or so ago.


    The way Matsumin, the designer of the valvecaster circuit, goes about implementing a gain control is a bit unusual, I had to mod my valvecaster build so that the gain control worked a bit better cause when it was built as per the circuit diagram it sounded a bit mis-biased, or it could have been due to the valve I was using at the time, I'll have another go at building the valvecaster circuit and will make sure I start a build-thread for it, will also do some signal tracing with a signal-generator and scope (will post some screen shots too) once I've got it working properly.
    Last edited by DrNomis_44; 26-01-2018 at 04:57 PM.

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