Device for setting an electric command variable

Details Device for setting an electric command variable Device for setting an electric command variable

1975-05-15

1976-11-30

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

235 92EV, H03K 1304

Patent

active

039952665

ABSTRACT:
A device for setting an electric command variable comprising parallel circuit branches for the coarse and fine adjustment of the variable is disclosed. In particular, the fine and coarse adjustment branches each include a digital bi-directional counter and a digital-analog converter. Upon exceeding the limits of the conversion range of the digital-to-analog converter of the fine branch, the counter therein is adjusted to a value which corresponds to a middle setting of its associated converter. To prevent the latter adjustment from causing a variation of the analog command variable, a corresponding correction of the counter in the coarse branch is then made. The present device has particular application in the setting of the energizing currents in magnetic lenses of an electron microscope.

REFERENCES:
patent: 2928033 (1960-03-01), Abbott
patent: 3763414 (1973-10-01), Clarke

Affiliated with

Also associated with

Rating

Device for setting an electric command variable does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for setting an electric command variable, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for setting an electric command variable will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1057897