Cause for Trembling of LED Tube Light and Flickering of others output with the flickering Fluorescent Tube Light(FTL).

1) FTL(with Magnetic choke/40W):- when the Triac is turned-ON to turn the connected FTL ON, the others output connected to others triac getting flickering(when turned OFF) with the flickering of FTL.  (tested on Breadboard)  

I wonder how you tested an AC circuit on breadboard. Are you referring to florescent Lamps when you mention FTL? If yes these lamps are normally rated to 35W have you considered the current and voltage while selecting the TRIAC? It will be hard to help you without the circuit diagram. How have  you connected the other loads? Have you tried changing the ballast a.k.a choke? 

2) LED Tube Light(18W): when the Triac is turned-ON to turn the connected LED Tube Light ON,​ the LED getting  ON correctly, but sometimes in the midst after rightly turning on it is noticed that the light of the LED Tube Light getting trembling/vibrating and a hissing noise is also noticed. (tested on PCB)   

LED lights have very rare chance to Hum, this is because they have no AC component inside. But still if you experience humming it is mostly due to electro magnetic interface. But if you are experiencing this problem when you are trying to DIM the LED then the story is completely different.

I assume that you are aware that unlike florescent of incandescent lamps LED lamps cannot be dimmed by changing the voltage applied to it. This is because the driver IC which converts the AC to DC for making the LED glow is designed to operate only for a specific input voltage range.  

Hi, 

Thnx for your reply..

###For the case of No 1: (Mounted on breadboard)::

Yes,  florescent Lamp referred as FTL. All the triac are used here BT136 (600V/4Amps) for all o/p. And MT1 is connected at LOAD (here as HOT of the FTL) and MT2 connected with HOT and Gate at output of Opto.

###For the case of No 2: (mounted on PCB)::

I know it cant be dimmed and not even tried to dim it (other that FAN). And light is not generating Hum noise, the noise is coming from PCB when the LED-Tube-light is turned ON. what I have been experiencing are as, 

A) Hum noise from PCB: till the LED-Tube-light is turned ON.

B) During turned On condition, light of the LED-Tube-Light getting SOMETIMES trembling/vibrating. 

Others load is connected through the same ckt with pin D1 and D2.

Thnx.

Yes, U3-> MOC3021, my actual ckt is here. I have also tested with snubber as below but issues are still there.

In addition to all above issues, If I use TRIAC BT136(600E and 600D) instead of BT136(600) with the circuit with/without snubber the others output (with load CFL and FTL) getting turned ON on Turning ON of FAN and , also the light start flickering on changing of speed of FAN.

What is actually problems and how can it be remove please suggest.

tnx