Analog-digital converter

Details Analog-digital converter Analog-digital converter

1975-11-04

1977-11-08

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347NT, 307260, H03K 1302

Patent

active

040577961

ABSTRACT:
An analog-digital converter in which a capacitor is charged or discharged by a reference current with the aid of transistor switches, a continuous current flows through the capacitor which is determined by an input difference voltage. One side of the capacitor is connected via a comparator to a flip-flop, to which flip-flop a clock signal is applied and which flip-flop drives the transistor switches. The other side of the capacitor is connected to the first input of a differential amplifier, which differential amplifier forms part of a negative feedback loop which maintains the voltage at the first input of the differential amplifier equal to the voltage which is applied to the second input of the differential amplifier.

REFERENCES:
patent: 3781870 (1973-12-01), Cutsogeorge
patent: 3835402 (1974-09-01), Kublick
patent: 3842413 (1974-10-01), Lagarde

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