This a guitar preamp schematic taken and modified from a pedal design. I have the idea to put this inside a proper amp head, but the power supply is Dual. How can I convert this into dual power supply? Do I take the all the Vref and make it the 0V and the the ground the V- ?
Thanks for your help
Thanks for your help
In general yes, but do place a concept drawing here for reviewing, just in case.
Cheerio!
sure. I don't understand the clipping part but it seems in the OG to not be biased half voltage. So I assume that there is some Asymmetrical op-amp clipping there. So I reduced that voltage to 10Vpp to get similar headroom as the pedal which is 9Vpp. And left the voltage divider.
Looks good.
The "OG"...? That first half of the 'Drive'-circuit is somewhat unclear. Just build and modify afterwards if required.
Pin 3 (+) U2.1 on gnd is right.
You might want to replace the 3V3 zeners with an adjustable diamond Vbe multiplier to to enhance this effect.
The "OG"...? That first half of the 'Drive'-circuit is somewhat unclear. Just build and modify afterwards if required.
Pin 3 (+) U2.1 on gnd is right.
You might want to replace the 3V3 zeners with an adjustable diamond Vbe multiplier to to enhance this effect.