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access icon openaccess Double dual slope square rooter

A circuit which accepts input dc voltage V I and produce an output voltage V O = √V I V T by using double dual slope principle is described in this Letter. V T is a constant voltage which is fixed by two resistors and a power supply voltage. By using precision resistors and a stable constant power supply, an acceptable level of accuracy can be obtained.

References

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      • 3. Netbut, C., Kumngern, M., Prommee, P., Dejhan, K.: ‘New simple square rooting circuits based on translinear current conveyors’, ECTI Trans. Electr. Eng. Electron. Commun., 2007, 5, pp. 1017.
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      • 6. Selvam, K.C., Latha, S.: ‘A simple square rooting circuit based on operational amplifiers (OPAMPs)’, Eng. Technol. Appl. Sci. Res., 2013, 3, (1), pp. 349351.
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      • 5. Mongkolwai, P., Prasertsom, D., Tangsrirat, W.: ‘CFTA – based current controlled current amplifier and its application’. The 25th Int. Technical Conf. Circuits/Systems, Computers and Communications (ITC – CSCC 2010), Pattaya, Thailand, 4–7 July 2010, pp. 624627.
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2013.0225
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