Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1979-07-27
1981-10-13
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
235201R, H03K 1302
Patent
active
042951232
ABSTRACT:
An analog to digital converter device is disclosed. The device includes a plurality of serially connected stages representing bits, each stage including generally a source of current or fluid and a second current or fluid source of opposite polarity, a current or flow direction controlled voltage or pressure drop unit, a comparator unit and a current or flow switch or valve responsive thereto for controlling the source of current or fluid flow.
REFERENCES:
patent: 3021517 (1962-02-01), Kaenel
patent: 3100298 (1963-08-01), Fluhr
patent: 3576291 (1971-04-01), Taplin
patent: 4005410 (1977-01-01), Michael
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