5 Volts from a single AAA
Powering a Breadboard
I got tired of having to wire up a a linear regulator, filter cap and a battery box just to generate 5 volts for my latest breadboard project. So, inspired by this product:
http://www.sparkfun.com/commerce/product_info.php?products_id=8466
I designed a small PCB that generates 5 volts from a single AAA cell using a DC to DC boost switching supply. The circuit is taken from the app note for the NCP1400A IC, which is here:
http://www.onsemi.com/PowerSolutions/product.do?id=NCP1400A
I designed the board to straddle the top edge of the breadboard and uses 8 pins (4 on each side) to connect to the breadboard's power supply and also hold the PCB in place. A slide switch powers it on and off. The result is shown below:
A close up of the assembled PCB is shown here:
Here's the layout of the top layer of the PCB:
