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| How to Switch Up To 600w Lighting? |
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| Sal Ammoniac:
I want to replace the wall-mounted toggle switches that control overhead lighting in several rooms of my house with switches than can be actuated remotely over a CAN bus. What kind of switching element is appropriate for this task? The overhead lights controlled by these switches range from incandescents to LEDs. The largest arrangement is in the main living room and consists of ten incadescent floods totaling about 600w. Other rooms have LED floods totaling about 100w per room. Dimming would be desirable, but not mandatory. I'm in the U.S., so the voltage is 120v 60Hz AC. I plan to design a small PCB that will have a microcontroller, CAN transceiver, and the switching element. I'm not sure yet whether to supply power to these units as DC over the CAT-5 I plan to run to each outlet (for the CAN signals) or tap it from the AC line. In any case, I want the PCB to be small enough to mount in a standard size wall switch receptacle housing. |
| Jeroen3:
There are dozens of off-the-shelf solutions for this. Why make it yourself? Eg: insteon. But eaton and Schneider have it as well. Anyway, nothing beats a decent relay. But you may also use a triac. |
| themadhippy:
--- Quote ---There are dozens of off-the-shelf solutions for this. Why make it yourself? Eg: insteon. But eaton and Schneider have it as well. --- End quote --- Or the entertainment industry standard, DMX. |
| Sal Ammoniac:
--- Quote from: Jeroen3 on September 10, 2019, 08:43:39 pm ---There are dozens of off-the-shelf solutions for this. Why make it yourself? --- End quote --- Why? Because I like DIY rather than always going with an off-the-shelf solution. It's a combination of learning experience and the satisfaction of having done it myself rather than having just bought something from a store. |
| Kjelt:
In the lighting devices I have opened they use a small relay but with so called pre-make contacts. Esp smps drivers and cold incandescent bulbs have large inrush currents and smps with switching off arcing. These relays have a double contact the first is Wolfram that will take "the heat" switching on and off the second is standard AgSnO2 material. An example of such a relay is Schrack RTS3Txxx (xxx is coil voltage). |
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