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Title: Current control circuitry

Abstract

Among the embodiments of the present invention is an apparatus that includes a transistor (30), a servo device (40), and a current source (50). The servo device (40) is operable to provide a common base mode of operation of the transistor (30) by maintaining an approximately constant voltage level at the transistor base (32b). The current source (150) is operable to provide a bias current to the transistor (30). A first device (24) provides an input signal to an electrical node (70) positioned between the emitter (32e) of the transistor (30) and the current source (50). A second device (26) receives an output signal from the collector (32c) of the transistor (30).

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
993817
Patent Number(s):
6867644
Application Number:
10/256,651
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03F - AMPLIFIERS
DOE Contract Number:  
AC06-76RL01831
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Taubman, Matthew S. Current control circuitry. United States: N. p., 2005. Web.
Taubman, Matthew S. Current control circuitry. United States.
Taubman, Matthew S. Tue . "Current control circuitry". United States. https://www.osti.gov/servlets/purl/993817.
@article{osti_993817,
title = {Current control circuitry},
author = {Taubman, Matthew S},
abstractNote = {Among the embodiments of the present invention is an apparatus that includes a transistor (30), a servo device (40), and a current source (50). The servo device (40) is operable to provide a common base mode of operation of the transistor (30) by maintaining an approximately constant voltage level at the transistor base (32b). The current source (150) is operable to provide a bias current to the transistor (30). A first device (24) provides an input signal to an electrical node (70) positioned between the emitter (32e) of the transistor (30) and the current source (50). A second device (26) receives an output signal from the collector (32c) of the transistor (30).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {3}
}

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Works referenced in this record:

Photodiode Front Ends: The Real Story
journal, January 2001


A low‐noise high‐speed diode laser current controller
journal, August 1993