Home:  Exchange Equipment: GPO DYNAMOTOR No 50A, 1970's

GPO DYNAMOTOR No 50A, 1970's

View all Exchange Equipment

GPO DYNAMOTOR No 50A, 1970's

Dynamotor for generating all the tones necessary in a telephone exchange including the voltage for the ring signal.
also the tones including, Park, Busy and Number unobtainable.

Your comments:

  • I have the 41a version of this timeless classic. I have been trying to obtain the correct diagram for it now for some months. Iam hopeing to have it working as a demo for the tones. Hope someone reads this and may offer suggestions. Main problem i have is to how to connect the 50v 2amp supply with out the machine "running" away at full speed. Hope there is help out there.
    .......... Dave, Birmingham UK, 28th of January 2010

Add a memory or information about this object

A0558



2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No. 1140352, Accredited Museum No. 2221