Virtual ground (Tube Screamer)

Frequently asked questions regarding powering your pedal.
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mat033
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Post by mat033 »

Hi!

I was looking at different Tube Screamer schematics (such as this one) and noticed that the virtual ground is obtained with a simple voltage divider.

Broadly speaking, this is not optimal.
Hence my question: would the TS benefit from a "better" virtual ground (as presented here)? Would it even be affected in any way?

Thanks.

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jonasx26
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Post by jonasx26 »

Not really. It all depends on the amount of current drawn from the virtual ground.
All is well as long as the virtual ground voltage doesn't move around with changes in load.

This article explains it very well:
http://geofex.com/circuits/biasnet.htm

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mat033
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Post by mat033 »

Thanks, this was really helpful !

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