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Thread: Driving ATtiny11 with 9v battery
www.piclist.com/techref/power/batterys.htm?key=battery
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face BY : Mr MCU email (remove spam text)



Well not really - regulation is not needed.  The additional diode
supplies the reverse polarity protection, and since it is not a shunt
regulator, there is NO power loss if you put the micro into sleep mode -
just what the micro would draw.  This method is much more efficient and
will handle varying loads without trouble.  To do so with a shunt
regulator, you will waste most of your power heating up a series
resistor.  If you want that, you can use the shunt circuit as a hand
warmer too!

- Mike


David VanHorn wrote:

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<40E2B687.3000302@sgi.net> 7bit

In reply to: <5.1.1.6.2.20040630072410.0213b130@mail.cedar.net>
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Subject (change) Driving ATtiny11 with 9v battery

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