The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 15, 1981

Filed:

Apr. 21, 1980
Applicant:
Inventors:

Aloysius J Nijman, Eindhoven, NL;

Franciscus A Schoofs, Eindhoven, NL;

Assignee:

U.S. Philips Corporation, New York, NY (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
1791 / ; 179 / ;
Abstract

The line circuit comprises at least a driver stage 1 having an amplifier. This amplifier is provided with a feedback circuit for forming a virtual output impedance which functions as a supply resistor so that additional collector space is created for the amplifier output transistor. In addition, the line circuit comprises a controlled supply source 5 connected to the amplifier output transistor for eliminating this additional collector space, which results in a low-dissipation line circuit.


Find Patent Forward Citations

Nijman, Aloysius. (1981). Telephone line circuit (U.S. Patent No. 4306122). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4306122

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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