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constant 4.5 V supply using batteries? Answered


how may i get a constant power supply
of 4.5 Volt using batteries?


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WHAT I FOUND SO FAR

googling and visiting several discussion groups
i found related advice ...
- e.g. using 1 more than the required batteries
in combination with e.g. a voltage regulator, diode, resistor, DAC -

if i use 4 instead of 3 aa batteries
and the voltage drops after a while -
would a voltage regulator, resistor, DAC
still provide 4.5V from the remaining voltage?

may i ask you what you would recommend?

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WHAT I NEED IT FOR

i am using rf sender/receiver modules
with my picaxe 08m microcontrollers
&
found, that they (and the connected antennas)
work best at a constant voltage of 4.5 V

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