Skip to main content
Knowledgebase
Home
Renesas India - Knowledgebase

Does the voltage rise if a positive-negative power supply is created?

Latest Updated:12/01/2011

Question:

The output voltage does not rise if a positive-negative power supply is created.

Answer:

If the positive power supply rises slower than the negative power supply, a current flows from GND of the positive power supply to OUTPUT, and consequently, the positive power supply does not rise. Bypass the current by connecting a diode between GND and OUTPUT.
Suitable Products
3 Terminal Regulators