Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
?
EE Times-Asia > Amplifiers/Converters
?
?
Amplifiers/Converters??

Telephone a carte SPM Detector

Posted: 22 Aug 2003 ?? ?Print Version ?Bookmark and Share

Keywords:FX631? SPM? Subscriber Pulse Metering? security tones? French cardphone?

This application note discuss how two FX631 Low-Voltage (Subscriber Pulse Metering) SPM Detector microcircuits can be used, with additional external filter components, to detect the security tones used in the French payphone/cardphone system.

View the PDF document for more information.



Article Comments - Telephone a carte SPM Detector
Comments:??
*? You can enter [0] more charecters.
*Verify code:
?
?
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

?
?
Back to Top