Uber Tuber Voltages Question

[jjjimi84]

I finished the uber tuber and it sounds good but the I am getting a low reading from TP2, I am thinking I need to lower the r8 resistor but I am wondering how low I need to go.

Here are my readings;

TP1 - 11.78
TP2 - 9.92
TP3 - 11.56
TP4 - 6.22
VC - 17.97

Any help is always appreciated.

[jjjimi84]

Fixed! dropped r8 down to 51k and got the following readouts.

TP1 - 11.48
TP2 - 11.10
TP3 - 11.51
TP4 - 6.21
VC - 17.97

[madbean]

Fixed! dropped r8 down to 51k and got the following readouts.

TP1 - 11.48
TP2 - 11.10
TP3 - 11.51
TP4 - 6.21
VC - 17.97

Yup, that's fine. Like I said in the updated UberTuber doc, there is actually a fairly wide range of useable voltages the 6111 will work with. Your original 10v was a bit on the low side but might have been fine. When I tested the batch of tubes I have up for sale I was getting good results between 10v -15v on most tubes using a trimmer.

[jjjimi84]

It sounded good originally but there would be something in my head that said it should be here so fix it.

I really think you hit it out of the park with this one, it sounds dynamite.

Like dy-no-mite!!!!