The Research of Programmable Equivalent Capacitor Circuit
| Autor: | Bang Shao Wang, Qing Hua Shang, Zhen Huang, Xia Sheng |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Equivalent series resistance business.industry General Engineering Electrical engineering Hardware_PERFORMANCEANDRELIABILITY Filter capacitor Digital potentiometer law.invention Capacitor Parasitic capacitance Hardware_GENERAL law Hardware_INTEGRATEDCIRCUITS Electronic engineering Equivalent circuit business Hardware_LOGICDESIGN Linear circuit Electronic circuit |
| Zdroj: | Advanced Materials Research. 981:36-39 |
| ISSN: | 1662-8985 |
| DOI: | 10.4028/www.scientific.net/amr.981.36 |
| Popis: | Resistors, inductors and capacitors are indispensable components in modern electronics field. While digital potentiometer is capable of conducting digital adjustments on resistances, the flexibility of adjusting the capacitance of most capacitors is still very limited even until now. This paper introduced a digital capacitor circuit based on impedance transformations. The impedance transformation circuit was set up by assembling an integrated operational amplifier and small amounts of resistors and capacitors. The capacitance of this circuit can be adjusted by controlling the resistance of a certain resistor using a digital potentiometer. Simulation results showed this circuit has many advantages including great flexibility if controlled with a single chip, wide capacitance adjustment range, insensitivity to temperature and pressure, and the size of the circuit remaining the same while the capacitance increases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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