Q: Zen-lite with -30~+30 voltage rail?
I want to build a Zenlite cooperated with an existed power-supply with -30 and +30 voltage rails. Hence, I modified some points in the original circuit, as shown in the attached drawing.
Is it ok? Thanks.
Unfortunately, the design depends on very low noise from the
(-) voltage rail. In the original, that rail is ground, so there is
no problem. In your proposed modification, the noise at the
Source of the Mosfet will be amplified.
I suggest that you simply tie the V+ and V- together to form
V+ and ground, with the positive at twice the original value.
I missed the keypoints of a diferential pair and made such a basic mistake.
Thank you very much.
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