 The prize this week is an 6V 0.6W Solar Cell. This contest will run for one week (September 22 – October 4, 2013). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Please note the image above is a side view of the thing. Please do not give the answer in the comments. Send an email
 This is an interesting look into old school rectifiers. Mercury Arc Rectifier have now been replaced with solid state bridge rectifiers which are inexpensive and reliable. I wonder how many of these Mercury Arc Rectifiers are still in operation, it seems that lots of this old stuff will be kept in use until it fails. “Operation of the rectifier relies on an electrical arc discharge between electrodes in
