Driving ATtiny11 with 9v battery
David VanHorn email (remove spam text)
At 08:01 AM 6/30/2004 -0400, Mr MCU wrote:
>Seem like everyone forgets that zener diodes actually subtract their
>voltage if placed in series. e.g. I would use a 1N4730A in series with
>the 9V. That would give you 9V - 3.9V = 5.1V ... perfect supply up to
>1W! Although it does not regulate, you really don't need regulation in
>your example as I see it. I would also use a 1N400x series diode for
>reverse polarity protection - if so just use a 1N4728A to make up the
>additional voltage drop.
So you've removed both regulation, and reverse polarity protection as features of this design?
I like the parallel version better.
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