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Electronics => Projects, Designs, and Technical Stuff => Topic started by: TerraHertz on May 12, 2015, 07:20:44 am

Title: New LED light for an Olympus BHM microscope
Post by: TerraHertz on May 12, 2015, 07:20:44 am

This is another one of my posts that should really be in a metalworking forum, since there's virtually no electronics mentioned. Oh well. Some may find it interesting. Or perhaps use the trick way of concentrating light from a large LED.

http://everist.org/NobLog/20150510_Olympus_bhm.htm (http://everist.org/NobLog/20150510_Olympus_bhm.htm)

Title: Re: New LED light for an Olympus BHM microscope
Post by: SeanB on May 12, 2015, 06:20:41 pm

Heatsinks for first generation Pentiums and Celerons, likely either the original Intel box set types, or the later ones or clones, easy to tell as the fan will have a hologram on it with the Intel logo, and will be a ball bearing one. Early ones were 2 wire, later they were 3 wire except on the base speed where they were 2 wire with a 3 wire socket on the end. I have used them as LED and power transistor bases as well, they will do 20W without cooling fan ( fins vertical) or 40W with the fan ( orientation insensitive) and are easy to drill and tap, as well as being common.