At 08:48 AM 5/7/01 -0500, you wrote:

>I knew that...

Of course, but probably not everyone did, and it adds a bit to Pd.
More of a factor with 78Lxx regulators with relatively high Vin.

>And the other variable is?

Lots of other variables.. the 'common' current is fairly constant with
output current and Ta on the 78x05 regulators, not so on some others,
So Pd = (Iq + Io)  * (Vin - Vout) is pretty close.

What are you getting at?

Best regards,

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