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I am very lucky to have a son in the Dental Equipment Service Business who faithfully watches for circuit boards that he can salvage from discarded equipment and deliver to the old man (me). Here is the cache that I got on Friday.     Sometimes I will just salvage them out for the parts but I am always watching for interesting assemblies that I can add to my resources and repurpose. Among the boards were 2 sets of (11) lighted momentary push button switches. These switch banks came ...
Today I am working on a circuit board from a Dental Statim Sterilizer. This sterilizer is unique in that it doesn't work by heating water inside the sterilization chamber but rather it has a separate boiler. Water is injected into the boiler and then the steam and pressure that is produced goes into a sealed tray, called a cassette, that contains the instruments to be sterilized. The advantage is the it is a very fast process and can potentially sterilize instruments in a fraction of the time ne ...