HAO MU_TONE DRIVER

[Willard]

[Frank_NH]

Thanks!  Looks good, though I'll have to source an B-C-E transistor to build it.  I suppose with some slight mods, it could be converted to C-B-E.

[dexxyy]

or you could just twist the tranny legs

[Willard]

[Frank_NH]

Sweet!  I'll see if I can get this built this weekend.  I'll probably use a 2N3904 for the NPN transistor and an LF353 dual op amp.


Here's youtube video with a demo of this circuit (the blue box on the left)...sounds pretty good to me!

[Frank_NH]

Here's the real thing.  VR1 is the "pre-gain" control for when the "boost" mode is activated.  VR2 is the output volume.   This is similar to the Hao Rust Driver - except with an added boost stage.