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Program an op-amp gain block with a limited-adjustability, monolithic, solid-state resistor.
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EDN
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August 21, 2008
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Copyright informationCOPYRIGHT 2008 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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W Stephen Woodward, Chapel Hill, NC
Edited by Martin Rowe and Fran Granville
Solid-state replacements for traditional electromechanical trimmer potentiometers are increasingly available in a variety of technologies from a variety of vendors. These replacements have many obvious advantages, such as automatic adjustability, miniaturization, and immunity to vibration. Some of these devices have only limited programmable spans, however. This limitation can sometimes be problematic and may preclude the use of a solid-state option in some design applications. An example of this shortcoming is the Rejustor family of devices, which Microbridge (www.mbridgetech.com) recently ...
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