Beiträge von Fred17

Thanks!

I need to replace fuse F1. Does all the load current go through this fuse? in this case I can calculate an appropriate value based on my expected loads. Or does it only protect the electronics in which case it should be smaller. It seems to have died when I had a load connected that was only supposed to be 50 watts (120 v) but it may have had a lot of inrush current (LED transformer or driver) or something else may have been wrong with the wiring of the load. (Chandelier was installed by an electrician who wasn't available when I connected dimmer).

Thanks! I suppose that if one were willing to do some soldering one could supply it with 12 volts, similar to what has been shown for some of the relays.

Has anyone tested the minimum DC voltage needed across L and N (with N positive) for the 0-10 v dimmer to work reliably?

Thank you very much!

Wondering whether I have to replace capacitors in advance for Shelly 2.5 relays that won't be exposed to more than 120 volts AC. Thanks for any experience or data you may have.

PC817 optocoupler ($0.17 each) also works (at least for 120 volt system).

I apologize for posting in English but you can use google translate, as I do for reading German. I am very grateful for the useful information in this area of the forum (specifically using i4 on low voltage)

I wanted to use low voltage momentary switches for input to Shelly Dimmer 2. Panasonic AQY282 (one form A NO SPST) and AQW282 (two form A NO SPST) photoMOS solid state relays require only 1.2 volts and 2 milliamps to operate (they can take up to 5 volts) and 1 microampere when off -- so could use battery but I am using new construction so will supply DC. They do not require power from the switched side and have 5000vac isolation between the input side and the switch side and can switch 60 volts. At 120v the measured voltage between SW1 or SW2 and L is under 7 volts both AC and DC so these are fine. I tested it on a dimmer 2 and it works as you would expect.

They can be added to a high voltage box containing the Shelly with adequate separation and insulation and then multiple low voltage momentary switches in parallel (via low voltage wiring from outside the box) can control each shelly input. These cost under $1.75 per channel (for example from Digikey or Mouser). Available in either DIP through hole or SMT packages.