Communications: electrical – Continuously variable indicating – With meter reading
Patent
1982-09-24
1985-04-02
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
364180, H04Q 900, G06F 1546
Patent
active
045090475
ABSTRACT:
The circuit contains two random-access memories or storages into which there is alternately written-in data received from a process computer. The data, in addition to the related addresses, is read-out at two intermediate storages or memories which deliver, by means of a digital-to-analog converter which can be set by a channel selection switch to the correlated analog channel, analog control-and-regulation signals for a machine tool. Two reversing switches which can be alternately opposingly switched enable writing into the one random-access memory, whereas the other random-access memory is read. A further reversing switch switches to the related channel address- and channel data intermediate storage. The circuit has 20 to 64 differential analog output channels with maximum signal voltages of .+-.10 volts. The resolution of the analog signal amounts to 16-bits, resulting in quasi-continuous analog output voltage signals (voltage steps or stages in the signal of minimum 0.3 mV), which can be reliably used in the regulation circuits of a machine tool.
REFERENCES:
patent: 3984665 (1976-10-01), Shriver et al.
patent: 4380796 (1983-04-01), Ostby
Kleeman Werner W.
Maag Gear-wheel & Machine Company Limited
Yusko Donald J.
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