Hello everyone,

    This is the same circuit with the modern silicon transistors.

    To build this circuit, you’ll need a few more connection blocks then included with the base and expansion set.

    If you compare the 2 versions, you’ll see the advantage that the legacy transistors have : they have the bias resistor incorporated which saves a lot of connections.

    We also have used for R7 a 100K resistor instead of the 330K for biasing T1. Do you think the sound produced will be the same ?

    Try it out and compare the results !


    Wien bridge Si transistors