Where to get crystal for an HP-45? Message #1 Posted by Mike Ingle on 4 July 2007, 7:00 a.m.
Has anyone done the crystal mod on an HP-45? I got one today (1973 model) which has the timer, and might as well put in a crystal. The doc on the site says you need a 784 KHz crystal. Is this correct? It is not a standard value and is not in the Digikey or Mouser catalog that I can find.
Mike
Re: Where to get crystal for an HP-45? Message #2 Posted by Allen on 4 July 2007, 7:59 a.m., in response to message #1 by Mike Ingle
Mike,
have you tried searching http://www.findchips.com/ ? I looked a few minutes, you are right a hard XTAL to find.
Re: Where to get crystal for an HP-45? Message #3 Posted by John Limpert on 4 July 2007, 1:39 p.m., in response to message #1 by Mike Ingle
Re: Where to get crystal for an HP-45? Message #4 Posted by Steve Leibson on 5 July 2007, 4:44 p.m., in response to message #1 by Mike Ingle
It's possible that Colorado Crystal (http://www.coloradocrystal.com/) will have some old crystals on the shelf. The place is just down the street from the HP Loveland site (which may no longer have HP as a resident) and engineers there may have had some crystals made for their HP 45s many moons ago. Good Luck!
Go back to the main exhibit hall