Skip navigation
When I passed the junk pile at my son's dental repair business today I noticed an old Ritter Meteor X-Ray unit sitting in parts. It was slated to go for scrap metal the next day. The one item that caught my eye immediately was a small Variac mounted to the front panel. I took a few minutes and removed it and brought it back to the electronics shop. In case you are not already familiar with variacs, they are a single winding transformer with some extra taps and a wiper that can slide across the f ...
Back Ground Information:   One of the important tools in the modern dental clinic is a fairly strong and concentrated light source which is used to cure (harden) light-activated resins. After placing the malleable plastic resin where it is needed the dentist puts the tip of the light gun near the resin and turns it on for an appropriate period of time. It is important that the correct level of light be applied and for the correct period of time. If the level of light is too low the resin w ...
jw0752

Greeting Card Technology

Posted by jw0752 Top Member Jun 21, 2016
There have been all aspects of technology discussed on the E-14 Forum but I have never seen any mention of the rather impressive growth in the technology that is being incorporated into Greeting Cards. This technology was evident the other day when I received a Fathers Day card from son Matt. Here is a short video of the card:     Now I have seen some pretty clever greeting cards in the past. Many have used simple micro processors to play tunes or record short messages. This card ho ...
A while back on the recommendation of jancumps I purchased a ZD-985 Desoldering station. I have been extremely happy with this purchase and even contracted with the vendor to upgrade their basic Chinese translated owners manual. There has, however, been one serious problem in the operation of the unit. To produce the vacuum that sucks away the solder it has a small internal vacuum pump that sounds like a small jack hammer. Every time I clear a solder pad it is BRAAAPT, BRAAAPT, and so on. During ...
  Tonight an older Dental Electro-surgery Unit was sent to me for repair. The dentist uses an Electro-Surgery unit like a scalpel to remove growths from inside the mouth and also to cauterize areas of tissue. The hand piece has a chuck and will accommodate different size and shape ends to suit different types of lesions. When I was more active in the dental repair business I would keep a piece of meat in the refrigerator so that I could test the repaired units by cutting out small pieces o ...