Re: [EE] looking for negative 5V regulator or circuit

On Wed, June 11, 2025 2:30 pm, Chuck Olson wrote:
> How about a 7 to 8 volt positive LDO ?  Use the regulator output to
> establish the ground of the PIC and the HC595 ?  I think there are more
> positive LDO regulator choices than negative.
>

A positive voltage regulator can pull the output up, but not down. Here,
the +7V is being pulled up by the load and needs to be pulled down by the
regulator.

Would a 7V zener to ground work?

Harold
https://w6iwi.org

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