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Beginner Question - Providing 4.5v to a circuit

shags_j

Jul 31, 2009
1
Joined
Jul 31, 2009
Messages
1
HI All,

Been playing around with projects etc. and always used 3v (in the way of 2 AA battery clip). However this new one requires 4.5v. What is a good way to get this kind of power?

Size is also an issue as I would like to package the circuit in a small container as a present for my nephew. Are button cells usable? Maybe hooking up 3 AAA's (never done this before, have always used the jaycar battery clips and they are only 2 or 4 batteries providing either not enough or too much voltage).

Help greatly appreciated.

Cheers,

Shags
 

amdNRA

Sep 3, 2009
50
Joined
Sep 3, 2009
Messages
50
Three 1.5vdc batteries in series would add up to 4.5vdc. Button cells usable? Well, it depends on the current draw...Check the datasheets for the cells and compare it against the measured current for the project. or Use a 5volt supply with a silicon diode such as the 1N4001 in series to drop the voltage to about 4.5vdc.
Later, Gil. :)
 
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