Voltage-controlled constant current source

Details Voltage-controlled constant current source Voltage-controlled constant current source

1980-12-01

1983-05-10

Sloyan, T. J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307498, 328181, 330252, H03K 400

Patent

active

043831885

ABSTRACT:
An integrating analog-to-digital converter for converting an input signal having an amplitude representing an analog quantity into a digital signal representing the quantity wherein the input signal may have either a positive or negative polarity and the converter automatically generates the digital signal without regard to such polarity. The converter uses a single circuit for charging and discharging a capacitor such that any errors or offsets occurring upon charging are fully and automatically compensated for during discharging so as to provide for automatic zeroing of offset errors without separate autozeroing circuitry.

REFERENCES:
patent: 3930252 (1975-12-01), Storar
patent: 4082998 (1978-04-01), Marriott
Linear Applications, edited and published in 1973 by National Semiconductor Corp., pp. AN20-1 and AN20-6 and preface.

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