Title:
有線通信用端末
Document Type and Number:
Japanese Patent JP4459305
Kind Code:
B2
Abstract:
A terminal (1) for wirebound telecommunication according to the invention comprises a class D amplifier which is supplied with a rectified ringing voltage (Vring) coming from the line (2) in a ringing condition and, in an off-hook condition, is supplied with the line voltage (Vln) coming from the line (2). A class D amplifier (20) is advantageous in that it is suitable for use with supply voltages which may vary over a large range. As a result, both the rectified ringing voltage (Vring) and the line voltage (Vln) can plainly be used as a supply voltage for the amplifier (20) and no additional circuits are necessary for matching these voltages.
Inventors:
Deluxe henk
Application Number:
JP52031597A
Publication Date:
April 28, 2010
Filing Date:
November 19, 1996
Export Citation:
Assignee:
NXP B.V.
International Classes:
H04M1/60; H04M19/00; H04M19/08
Domestic Patent References:
| JP6085973A | ||||
| JP56152360A |
Attorney, Agent or Firm:
Kenji Sugimura
Tatsuya Sawada
Yoshiyuki Iwasa
Tatsuya Sawada
Yoshiyuki Iwasa