A New Control Relay for Automatic Transfer of Supplies for Signalling Applications

2014 ◽  
Author(s):  
D.M. Van de Sype ◽  
P. Hayt ◽  
S. Thiim
Keyword(s):  
Control Relay

A SYSTEM FOR PROTECTING AN OIL DIFFUSION PUMP AGAINST FAILURE OF THE MECHANICAL FORE PUMP, COOLING WATER, OR ELECTRICITY

1970 ◽  
Vol 28 ◽  
pp. 344-345
Author(s):  
W. C. Bigelow ◽  
F. B. Drogosz ◽  
S. Nitschke
Keyword(s):  
High Vacuum ◽  
Cooling Water ◽  
Effective Protection ◽  
Pump Line ◽  
Diffusion Pump ◽  
System Pressure ◽  
Control Relay ◽  
Vacuum Systems ◽  
Vacuum Gage ◽  
Pressure Switch

High vacuum systems with oil diffusion pumps usually have a pressure switch to protect against Insufficient cooling water; however, If left unattended for long periods of time, failure of the mechanical fore pump can occur with equally serious results. The device shown schematically in Fig. 1 has been found to give effective protection against both these failures, yet it is inexpensive and relatively simple to build and operate.With this system, pressure in the fore pump line is measured by thermocouple vacuum gage TVG (CVC G.TC-004) whose output is monitored by meter relay MRy (Weston 1092 Sensitrol) which is set to close if the pressure rises above about 0.2 torr. This energizes control relay CRy (Potter & Brumfield KA5Y 120VAC SPDT) cutting off power to solenoid-operated fore line valve Vf (Cenco 94280-4 Norm. Closed) which closes to prevent further leakage of air into the diffusion pump

A Pilot Self-Sustaining Time Delay Safe Switch

2014 ◽  
Vol 697 ◽  
pp. 147-150
Author(s):  
Hai Jun Wang ◽  
Yong Jian Fan
Keyword(s):  
Time Delay ◽  
Control Circuit ◽  
Dynamic State ◽  
Work Processes ◽  
Current Time ◽  
Control Power ◽  
Logic Control ◽  
Switch Time ◽  
Delay Control ◽  
Control Relay

We designed a type of pilot-operated self-sustaining time delay power on/off circuit which consists of a duplex switch, time delay circuit and a dual-coil, dual-contact electromagnetic logic control relay. We also depicted a dual-coil, dual-contact electromagnetic relay logic control circuit diagram dedicated to this design. Structures and specific couplings of the circuit were presented and analyzed. Functional analysis was also carried out for a variety of work processes performed on the circuit at static or dynamic state, and the results showed that the circuit, in addition to fulfilling its primary function for time delay shutdown of the main circuit, is also capable of automatically powering-off the control circuit and the control power supply when the device is left unattended. This design greatly meets the needs of current time delay control technology, and thus has a great commercial potential.

Design of the Energy-Saving Heater Based on Semiconductor Nano Electrothermal Film

2015 ◽  
Vol 667 ◽  
pp. 500-505
Author(s):  
Jia Kuan Xu ◽  
Jian Bo Cao ◽  
Jian Xia Cao ◽  
Fa Cai Qiu ◽  
Quan Hui Sun ◽  
...  
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Electric Heating ◽  
Pressure Control ◽  
Temperature Control System ◽  
Relay Control ◽  
Stable Temperature ◽  
Heating Device ◽  
Control Relay ◽  
Vehicle Components

The traditional electric heating device mainly used resistance wire as the electric vehicle components. A novel semiconductor nanoelectrothermal film as a heating material was to study its feasibility. By analyzing the heating mechanism of electrothermal film and comparing the existing heating device, an energy-saving heater was designed based on semiconductor nanoelectrothermal film. In STC89C52 micro-controller core, a practical and stable temperature control system was devised by a variety of control methods - shock control, relay control, pressure control, and so on. The energy consumption experiments were done between new electric heating device and conventional heater, and the results showed that new electric heating device had more energy efficient. On the basis of this study, a series of electric heating products could be developed with low power and environmental protection, and it was a useful exploration for technology upgrades for the electric heating industry.

HP3 Automatic Measurement System

2014 ◽  
Vol 643 ◽  
pp. 233-236
Author(s):  
Jing Bo Xu ◽  
Jian Song Zhang ◽  
Hong Tao Yu
Keyword(s):  
Control System ◽  
Measurement System ◽  
High Efficiency ◽  
Automatic Measurement ◽  
Application System ◽  
Usb Interface ◽  
Labview Software ◽  
Automatic Measurement System ◽  
Control Relay ◽  
And Control

This paper introduce the thought of USB interface application, an automatic measurement system is as an example. The PC control system of automatic measurement by the Labview software programming, then control relay, and control the work state of the HP3. It shows that the design of USB interface application system is realized by using labview programming easy and high efficiency.

Design and Implementation of a Kind of Intelligent Electric Blanket Temperature Control System

2013 ◽  
Vol 432 ◽  
pp. 447-452
Author(s):  
Rong Li ◽  
Zhe Ming Duan ◽  
Wei Zhou ◽  
Bing Chao Dong
Keyword(s):  
Real Time ◽  
Temperature Control ◽  
Temperature Control System ◽  
Single Chip ◽  
Real Time Control ◽  
Loop Control ◽  
Relay Control ◽  
Time Control ◽  
Control Relay ◽  
Design And Manufacture

Temperature control is the key problem in the design and manufacture of electric blankets. In order to solve current technological failure to real-time control of the temperature of electric blanket, this paper applies technical means of DS18B20 temperature acquisition and relay control temperature heating, together with key circuit, display circuit as well as other auxiliary circuit, and the system achieved electric blanket working temperature real-time intelligent control. Relay output controlled the temperature closed loop control by single-chip microcomputer, and a new type of intelligent temperature control technology of electric blanket is developed, real-time temperature control is enhanced, which improved the security and energy conservation of electric blanket.

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