Why the single-fire smart switch cannot be connected to smart dimming lamps from JuliaCao's blog

By chance, I came across the single-color temperature smart dimming driver that we have been looking for. The main living room lights and ceiling lamps mainly produced by our company are instantly dazzling. They can not only be infinitely dimmed, but also flicker-free throughout the process, and can also be controlled remotely.

In order to understand smart homes, as well as supporting products and services, I have been talking about smart switches in the past few days. Some people say that single-fire smart wall switches cannot be connected to smart dimmer lights, or even some ordinary LED lights. Is this true?

Controllable switch + home circuit = smart switch?

Since the switch controls the light on and off, the smart switch intelligently controls the light on and off. So, does the home circuit + controllable switch become a smart switch? From this, can remote control and electrical equipment linkage be achieved? Let's explore this issue below.

Replace the mechanical switch directly with an intelligent control module

When the module is disconnected, the module itself loses power and the entire circuit is disconnected, making it impossible to remotely turn the switch on again. It's a bit like locking yourself out without a key when you go out, so this method is unreliable. Directly adding a device to the switch that receives instructions and controls it cannot achieve the effect of a smart switch.

It can be seen that controllable switch + neutral line transformation + household circuit = zero fire intelligent switch circuit

In the above circuit, because the controllable switch cuts off its own current after disconnecting the circuit, does the formula of controllable switch + neutral line + household circuit work?

Add a neutral line to the switch so that the switch has an independent circuit, so that the switch can supply power independently, and the line switch of the light will not affect the switch operation. This is the zero-fire switch solution.

The formula of controllable switch + neutral line transformation + household circuit = zero fire smart switch circuit is feasible.

Controllable switch + live wire modification + home circuit = single fire intelligent switch circuit

In addition to the neutral wire, household circuits also have live wires. Since transforming the neutral wire can achieve the effect of smart switching, is it also possible to transform the live wire? That is, controllable switch + live wire modification + household circuit. Is this formula feasible?

By modifying the circuit: instead of using mechanical switches to physically disconnect the circuit, add loads to the switch and lamp circuits. When the switch is closed, due to the load, only a small current passes through the switch and the bulb. The current passing through is too small to light the bulb while maintaining the switch operation. This solves the problem of a single fire switch.

However, it should be noted that the load must ensure that the current passing through it is small enough to not light up the bulb while maintaining the switch operation. Therefore, the single-fire switch has certain requirements for the power of the lamp. If the power of the lamp is too small, it will be easily lit or flicker by the small current passing through (this is also the reason why the single-fire switch load lamp on the market generally has a minimum power of 3W), and It is also necessary to pay attention to the rated power of each circuit of the single-fire switch.