Effective repeat cycle timer relay for High-Risk Applications
Reliable repeat cycle timer relay Designs for Commercial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their complete range of repeat cycle timer relay . They provide a total set of repeat cycle timer relay items and also other interrelated merchandise. These units are observed in different applications like commercial applications, industrial control circuits along with OEM Panels. These devices include exceptional precision and repeatability. The normal repeat cycle timer relay that happen to be created today demand extremely little panel space.
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R27-11AD10-120 Programmable DPDT 120 Volt AC or DC Repeat Cycle Time Delay Relay. The first delay period begins when input voltage is applied. At the end of the first delay, or "on" period, the internal relay pulls in, and the second delay, or "off" period begins. When the second delay period ends, the relay drops out. The cycle continues until the voltage is removed.
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Atashka asked electrical engineering problem?
I am using 9V voltage source, supplying 5V(through voltage regulator) to water sensor, then to bistable multivibrator (active high), which is connected to DPDT relay and then to servo motor. When water sensor is on, motor will rotate in positive direction, when water sensor is off, multivibrator will send logic "0" to relay, which will change the polarity of motor to make it to rotate in negative direction. The question is how can i make motor to rotate for certain amount of time for both cycles. And also can i get a ready multivibrator in electrical shops, because i tried to built it up myself, from circuit i got from internet, it didnt function properly. If u have better suggestions how to implement the task by using some other components also will be very appreciated. Thank you
And got the following answer:
I guess you have a motor that will pump water into a reservoir or tank. When water drops to a certain low level, one would like to start the motor. IS that what you want? What is meant by reversing the motor?? What happens then? If you need the motor to drive for a certain time, you need a timer. This is a device when started, will remain On for a specific duration. So you can trigger the device when water reaches a low level, by sensing the level through the water sensor. Then the motor will rotate for a certain time depending on time you have set in timer. When level falls below the min level, the sequence will repeat. A simple way to get a timer is to use a large RC and a transistor driver for the relay. The capacitor at base can be charged through a diode, when trigger occurs, and the capacitor will keep the transistor ON for a certain time. The transistor can drive the relay. See also timer circuits based on 555.
The repeat cycle timer relay work very properly with diverse applications which are distinct to energy distribution and protection. The relays include wide adjustment ranges having a scale that is definitely simple to read either in three or four digits in line with the model. These repeat cycle timer relay support in escalating the flexibility on the applications, minimize the overall power and upkeep fees. There are relays that are employed for basic purposes which come in reliable styles with swift replacement alternatives. And there are models that happen to be used for industrial applications and heavier duty applications that perform on substantial loads. These products are made to meet the lifetime industrial handle needs with the applications.
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