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DIY regulated power source

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Electro-Squirrel

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Hi,
Does anyone have the circuit diagram or know of a kit for a 3.0-4.5V regulated power supply, power source is 3 AA batteries ideally?

Thanks in advance for any help.
 

banjo

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What is the current requirement? Take a look at www.linear.com. They make a number of boost converter ICs. For example, LTC3401 can handle up to 1A and is adjustable with two resistors. The datasheet has several typical circuit diagrams. (Note: 1A is the chip maximum, you will never get this much from AA batteries. Since battery current is always greater than load current in boost regulators.)
 

Meridian

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Electro-Squirrel said:
Hi,
Does anyone have the circuit diagram or know of a kit for a 3.0-4.5V regulated power supply, power source is 3 AA batteries ideally?

Thanks in advance for any help.

The input voltage has to be must greater than the regulated output voltage.
Can't you go 4 AAA instead?
 
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