Digital-to-analog converter with potential separation

Details Digital-to-analog converter with potential separation Digital-to-analog converter with potential separation

1983-09-23

1986-10-14

Shaw, Clifford C.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1302

Patent

active

046175512

ABSTRACT:
A digital-to-analog converter includes an interim memory, with parallel storage locations for N bits connected to a digital data channel, followed by a full adder to the input of which the output of a free-running counter with N bits is also connected. The carry output of the full adder is connected, via an optical coupler, acting as a potential separator, to a mean value former which forms from the pulse sequence which occurs at the carry output of the full adder, and the duty cycle of which corresponds to the digital value stored in the interim memory, a mean analog value which is provided as the final output. Even in multichannel designs, only one optical coupler is required for the data transmission, on the switching properties of which the linearity and stability depend in substance.

REFERENCES:
patent: 3422423 (1969-01-01), Kaszynski et al.
patent: 3588880 (1971-06-01), Gross et al.
patent: 4390796 (1983-06-01), McClenahan et al.

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