Where to get crystal for an HP-45?



#5

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


#6

Mike,
have you tried searching http://www.findchips.com/ ? I looked a few minutes, you are right a hard XTAL to find.

#7

Try International Crystal.

#8

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!


Possibly Related Threads...
Thread Author Replies Views Last Post
  capacitors for wp34s crystal hack Andrew Nikitin 12 1,699 08-02-2013, 03:30 AM
Last Post: Bruce Larrabee
  Repair HP 45 Nanoman 3 644 04-12-2013, 05:40 PM
Last Post: BobVA
  Recharging original batteries in HP 45, 65 and 25 Michae Altmann 1 560 03-05-2013, 12:21 AM
Last Post: DavidShenk
  I still have wp34s crystal and cap sets David Griffith 3 640 11-01-2012, 05:13 PM
Last Post: Dale Reed
  [WP-34s] Updated: How to install crystal and IR diode Alexander Oestert 2 652 06-17-2012, 12:19 PM
Last Post: Geoff Quickfall
  [WP-34s] Crystal frequency jerome ibanes 6 870 05-25-2012, 07:36 PM
Last Post: Paul Dale
  [WP-34s] How to install crystal and IR diode.pdf Alexander Oestert 27 2,747 05-04-2012, 06:21 AM
Last Post: Dominic Richens
  I still have wp34s crystal and cap sets David Griffith 0 345 05-03-2012, 07:54 PM
Last Post: David Griffith
  WP-34s: Crystal and capacitor instructions? W. Bruce Maguire II 2 618 05-03-2012, 02:04 PM
Last Post: W. Bruce Maguire II
  wp34s crystal kits -- don't worry David Griffith 7 996 04-16-2012, 04:58 PM
Last Post: Marcus von Cube, Germany

Forum Jump: