Solid State Music V1B question

[der Mouse]

> The 1N4742 is a 1w part which at 12 volts is well within the amperage
> ratings of a 7812.

Except that those are different values.

The 1W dissipated by a zener is the power that _isn't_ going through
the load.  The rating of a 7812 is power that _is_ going through the
load.

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