By Topic

An Integrated RC Oscillator for TOUCH-TONE® Dialing

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
W. Orr ; Bell Labs., Allentown, PA ; R. Rickert ; D. Hill

A multiple frequency RC oscillator for use in TOUCHTONE® telephones has been made using tantalum films and beam lead silicon devices. The integrated design, equivalent to over 50 discrete components, requires a volume of about four hundredths of a cubic inch. All eight frequencies of the tone generator are initially tuned to 0.1 percent.

Published in:

IEEE Transactions on Communication Technology  (Volume:16 ,  Issue: 4 )