Op amp power supply sequencing question

[patchell]

    Mike:

    By using diode clamps in strategic places, you can prevent bad things
at least from happening to you parts.

http://www.silcom.com/~patchell/powersupply/powersupply.pdf

    This schematic shows how I place diode clamps on three terminal
regulators (7815/7915) power supplies (I hope I drew it correctly).

    -Jim

"Mike I." wrote:

> Does anyone know whether having different rise-times (and fall-times)
> for both sides of a +/- 15V supply can damage op amp circuits (eg. when
> supply is turned on and when supply is turned off).? I think I read
> somewhere that  V- should never be applied if V+ is absent (even
> momentarily). Is this correct?

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