Device for generating analog current or voltage signal

Details Device for generating analog current or voltage signal Device for generating analog current or voltage signal

2011-03-22

2011-03-22

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

C318S601000, C318S691000

Reexamination Certificate

active

07911171

ABSTRACT:
In a device, such as measuring or control signal transmitter, generating an analog current or voltage output signal, absolute values of output variables are continuously measured and regulated to ensure the correctness of the signal. The actual current or voltage value of an analog output signal is measured and digitized (206), a difference (e) between the digitized actual current or voltage value and the desired current or voltage value is defined (300), and the generation (200, 202, 204, 205) of the analog output signal is controlled (304) by means of a digital control signal (Enable, Direction) so as to decrease the difference.

REFERENCES:
patent: 5170496 (1992-12-01), Viereck
patent: 7151914 (2006-12-01), Brewer
patent: 2003/0040291 (2003-02-01), Brewer
patent: 2004/0239547 (2004-12-01), Boehm
patent: 2005/0146453 (2005-07-01), Jensen
patent: 2007/0075885 (2007-04-01), Somayajula
Finnish Search Report (with English translation of category of cited documents) dated Nov. 22, 2007.

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