Wideband automatic level control circuit for wideband signal generator application

2012 ◽  
Author(s):  
Hang Cao ◽  
Ling Tian ◽  
Wei Hong
Keyword(s):  
Signal Generator ◽  
Control Circuit ◽  
Level Control ◽  
Wideband Signal ◽  
Automatic Level

Automatic Level Control Circuit for High Power VHF Pulsed Radar Transmitter

1995 ◽  
Vol 12 (4) ◽  
pp. 257-260
Author(s):  
S L Karode ◽  
K P Ray ◽  
A K Basu
Keyword(s):  
High Power ◽  
Control Circuit ◽  
Level Control ◽  
Automatic Level

Automatic Control of Molten Metal Flow for Improving Casting Performance

2011 ◽  
Vol 693 ◽  
pp. 179-184
Author(s):  
Thomas Jarlsmark ◽  
Jan Strömbeck ◽  
Mikael Terner ◽  
Jerry Wilkins
Keyword(s):  
Molten Metal ◽  
Metal Flow ◽  
Casting Process ◽  
Direct Chill ◽  
Level Control ◽  
Level Measurement ◽  
Cost Efficient ◽  
Molten Metal Flow ◽  
Automatic Level ◽  
Rolling Ingot

The ways to gain better quality and higher casting performance is an urgent topic among aluminium producers today. This issue is also often on the agenda at conferences like this and the subjects and technologies to achieve this varies. Controlling the molten metal flow by maintaining predefined levels or level patterns is one of many powerful tools to reach this goal. Precimeter Control specializes in applications for non-ferrous molten metal level measurement and molten metal flow control. By integration, or retrofitting, any new or existing casting line can easily be automatically controlled and gain improved casting performance in a cost efficient way. This paper will focus on the main benefits from automatic level control and how some plants have achieved improvements in their casting process of DC (Direct Chill) slab (or rolling ingot) casting after implementing such technology.

The Design of the Solar Panels Automatic Tracking Controller

2014 ◽  
Vol 953-954 ◽  
pp. 123-127
Author(s):  
Rong Xia Sun ◽  
Xiao Ning Sun ◽  
Shuo Nan Wang
Keyword(s):  
Control Device ◽  
Light Signal ◽  
Control Circuit ◽  
Signal Acquisition ◽  
Single Chip ◽  
Level Control ◽  
Physical Test ◽  
Automatic Tracking ◽  
Tracking Controller ◽  
Driving Circuit

In this paper, the design is with the single chip microcomputer as the core of automatic tracking controller. The system is mainly composed of the signal acquisition part, the signal conditioning part, a control circuit and a drive circuit. The signal collection circuit composed of photosensitive resistance sensors to collect light signal, signal conversion circuit with voltage follower LM324 convert the change of light intensity to the change of the voltage, through the voltage comparator LM393 produce high and low level control stepping motor rotation; Control circuit use the AT89S52 as the main control device, output different control signals to the driving circuit; Driving circuit use the ULN2003 as driver stepper motor. Is obtained by simulation debugging, physical test, the error rate is less than 5%, in order to realize the efficient utilization of solar energy.

scholarly journals AUTOMATIC LEVEL CONTROL OF THE THICKNESS OF PRODUCT SLIVER

1960 ◽  
Vol 16 (4) ◽  
pp. 306-314
Author(s):  
Akira Aoki
Keyword(s):  
Level Control ◽  
Automatic Level

Automatic level control for liquid nitrogen trap

Vacuum ◽  
1959 ◽  
Vol 9 (3-4) ◽  
pp. 231-233
Author(s):  
Lewis D. Miller ◽  
Paul N. Petersen
Keyword(s):  
Liquid Nitrogen ◽  
Level Control ◽  
Liquid Nitrogen Trap ◽  
Automatic Level
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