I am need help with getting power from a A23 12v battery down to 6v or 4 AAA equivalent. To power this device http://tinyurl.com/m7nbpz . I am currently power it with 4 AAA's but I would like to reduce the power source to run on the A23 or something of that size. Can anyone give me some ideas? I would like to keep it simple if possible. Some inline from the power source.