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SONOFF. WiFi wall switch. NO NEUTRAL WIRE

Hello from cold Russia.


1)Don't use the grounding wire to connect N pin on your wall switch. If you don't want to win Darwin award. 

Look at the first picture.


2)Use capasitors to connect the switch and the bulb. 

Look at the second picture.


C1 - Capacity. Metal-film capacitor for 400 volts.

It works as a "quenching capacitor" or "resistance". In order for the "part of the current" to remain on the switch and feed it, in the switched on position of the key.

C2 - Capacity. Metal-film capacitor for 400 volts. 

Works as a "bypass" resistor. Serves to ensure that energy-saving gas-discharge or LED lamps do not blink (from the current passing through them supplying the switch) in the off position of the key.

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Hi,
I appreciate your effort to share the NO NEUTRAL wire solution.

Can you re upload the diagram with english ?

The capasitor given in 1.5uF ? or 1.5mF

How do you calculate the capacitor ?

 


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Hey this solution would help me in some installations, do you have more info (or copy and paste the text so we can translate.) thanks!

Hello. 


Use LED or GAS lamps only. Only low power consumtion devices. 


First column - "Type of bulb"

P1 - power of BULB in WATTS.

C1 - quenching capacitor - 1,5 micro Farades to 3,3. 

C2 - 0.47 micro Farades. (that solution is need if your LED lamp is cheap, there are a lot of expensive bulbs witch have that solution included). Only cheap bulbs blink.


Good luck.

Hi, can you share the formula that you use to calculate the capacitors? For example, what should be the capacitor 1 and 2 in case the load is LED lighting with transformers, about 40W total?


Thanks a lot!

I don't have formula. Experimentally - U'll need 7-10 micro Farades capacitor for that solution.

I guess that means -- two 4,7 micro Farades capacitors. Parallel connection.

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