I have a requirement to add a bi-level clipping circuit to an existing device that uses a single ended 9VDC power supply. I attempted to implement it using two LM358s similar to Crutshow's circuit shown in the third example at https://www.electro-tech-online.com/articles/analog-max-min-value-or-bi-level-clamp-circuits.808/. It failed to function. Have I done something wrong or is this not possible with a single ended power supply? My internet search did not turn up any clipping circuits using a single ended power supply. I would appreciate any help you can offer.
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