EN-Genius Network's Dennis Feucht answers your design
queries in his new Circuit Design Clinic!
EN-Genius Network presents a new, interactive
analog design service to readers! Send us your design questions (with
relevant data; schematics in JPEG or GIF, please) for some free
engineering advice from EN-Genius Network's circuit
consultant, Dennis Feucht, on how you might solve a design problem or
improve circuit performance. Submissions may be edited for clarity or
brevity, and submitters and their email addresses will remain anonymous
(unless otherwise indicated). Please send your questions to Dennis here.
Dennis' Design Den May 14 07
Design And Build A Simple DPM
by Dennis Feucht
Digital panel meters (DPMs) are usually used as dedicated digital voltmeters (DVMs) and are also the core of digital multimeters (DMMs). This project entails design derivations and implementation of a simple DPM. Although DPMs are low-cost and available as a single IC, this project presents a case study of a design for new analog engineers of a mixed-signal device. The core of the project is a modified dual-slope analog-to-digital converter (ADC).
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