Recent content by mike gibson

Hi, I am trying to figure out the most effecient method to heat an electronic component in a portable battery powered device. The first thought was just an ordinary wire wound resistor or another possiblity is a peltier TEC. The whole thing needs to be as efficient and small as possible...

How can I demagnetize a steel shaft. Heat is not an option. The shaft is 0.6 inches diameter and 3 feet long. Note I have seen several devices for sale that seem extremely expensive. Perhaps, if I know what the actual physical process is, then I can just build a device to demagnetize the...