SCR triggering, using TCA785

[DDAY]

My Project is controlling AC power by varying phase angle (Firing angle or delay angle) of the thyristor.


I started to read a lot about it.
Finally I decided to use this circuit:




Does it seems so complex? I found it in TCA785 datasheet.
If you google you will find the simulation videos on You tube.


I have a problem here.
When I simulate it, it doesn't show me the output signal!
Could anybody say what is my mistake in this simulation?

Does anybody have this circuit simulation?
It's very necessary for me./

 

[FvM]

You partly copied the TCA785 datasheet application circuit, but there seem to be several faults, e.g. missing pin 16 power supply, TR2 not connected to Q1 collector. I stopped at this point... Please fix the circuit.

 

[DDAY]

You partly copied the TCA785 datasheet application circuit, but there seem to be several faults,

Thanks a lot for checking the circuit and for helping.

e.g. missing pin 16 power supply, TR2 not connected to Q1 collector. I stopped at this point... Please fix the circuit.

I think datasheet is wrong in here!
Pin 16 is VSS, and VSS means the Ground (-) , I can not connect it directly to +15v !

 

[FvM]

Pin16 name is Vs not Vss. It's the positive supply.

I think datasheet is wrong in here!

It's a Siemens/Infineon document, not the faulty translation of a taiwanese datasheet.

 

[DDAY]

Pin16 name is Vs not Vss. It's the positive supply.


It's a Siemens/Infineon document, not the faulty translation of a taiwanese datasheet.

I know Siemens, we use Siemens PLC's in most of industries in our country. They're excellent.

The problem is that when I connect it to +15v , there is an error saying Gnd and + interconnected.

 

[schmitt trigger]

Yes the circuit is copied incorrectly.
The right hand side of C5 in your schematic, snakes its way around the IC, only to be connected to ground.

I also stopped at that point.

 

[FvM]

The problem is that when I connect it to +15v , there is an error saying Gnd and + interconnected.

Maybe the Proteus component is flawed? But in any case it will hardly work without a power supply.