Powerful dc voltage relay for High-Risk Applications
Reliable dc voltage relay Styles for Commercial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their complete range of dc voltage relay . They offer a comprehensive set of dc voltage relay items and also other interrelated goods. These units are observed in distinctive applications including industrial applications, industrial control circuits as well as OEM Panels. These devices include great precision and repeatability. The common dc voltage relay which can be made in recent times require really little panel space.
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Hayward AQL-RELAY-DC-KT 3 HP 240-volt High DC voltage Relay Replacement Kit for Hayward Pool Automation and Control Systems
Hayward high DC voltage relay kit is designed to use with Hayward Aqua Logic automation and control systems. Fits Hayward On Command and E-Command 4 base pool and spa control base system. 3-Horsepower and 240-volt. It connects to valve output.
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rEaLiTy asked How can i used a RF reciever to control a relay which would control an AC lighting unit?
I am trying to design an RF transmitter of very low frequency to make contact with a RF reciever, so when the frequency is obtained by the reciever, it would then turn on the relay which would power on the lights in a certain room of the house. Any help is appreciated. Thanks, this is for my Electronics Senior Project undergraduate level
And got the following answer:
Just tune the receiver to the proper frequency and amplify it via RF amp, or IF amps. Then detect with a RF diode, and use the DC voltage to drive a transistor that activates the relay. But only certain frequencies are allowed to be used for this purpose, so check with the various government regulations. I don't know of any that are "very low frequency", which by definition is 3 kHz to 30 kHz. This is a very difficult range to work with as the antenna has to be many miles long. To avoid false triggering, you may want to modulate the RF with a specific audio frequency and detect that frequency in the receiver. Or a specific pulse sequence for a more elaborate setup. But 30 kHz is so low that it is difficult to modulate. PS, you can buy these units, fairly cheaply. .
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