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- W2113155854 abstract "Current source is one of the key components in electrical measurement and control systems. However, the noise introduced by temperature drift and other interference makes it a significant source of systematic errors. To develop a high precision and stable current source, a Howland-based voltage to current conversion (V/I) circuit is presented in this paper. The current source is fully programmable using a DSP via RS-232 interface. Moreover, a sampling circuit is provided, using the sampling results, calibration is made to further reduce the output error of the current source. Under a constant 140 Omega load, experiment results shows that current output ranges from -50 mA to +50 mA with error less than 3 muA, and features low temperature drift and distortion. This proves that such design can be an effective way to provide a precise and stable range output current." @default.
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- W2113155854 date "2009-08-01" @default.
- W2113155854 modified "2023-10-16" @default.
- W2113155854 title "Design of a high precision current source" @default.
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- W2113155854 doi "https://doi.org/10.1109/icemi.2009.5273991" @default.
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