Hi

I've been searching everywhear and can't find a difinative answer to my problem!

I'm employing an SSR and my question is should the supply live go to mt1 or mt2?

I've seen it both ways on google searches but I've yet to find a difinitive answer.

I used triacs at college and discovered that, although there was little relevant info, it did matter whether I connected the mains live to mt1 or mt2!

it woud only opperate one way round.

So is the situation different with an SSR?

South

 

SSR usually refers to an actual commercial product, not a single component.
What is the Manuf. part No.?
Usually a off the shelf SSR requires a two connection input which are polarity sensative.
For a single SSR device, the preferred control switching is done between anode and gate.
For Triacs, read https://www.electronics-tutorials.ws/power/triac.html
Max.

 

SSR usually refers to an actual commercial product, not a single component.
What is the Manuf. part No.?
Usually a off the shelf SSR requires a two connection input which are polarity sensative.
For a single SSR device, the preferred control switching is done between anode and gate.
For Triacs, read https://www.electronics-tutorials.ws/power/triac.html
Max.

Hi

The Manuf part no. is SSR-40 DA

Thanks for the link to an interesting article on Triacs.

I'm aware that the SSR is not the same as a triac.

The SSR has mains ac terminals with the names mt1 and mt2 though.

I think my question is does it make a difference if I connect the
live side of the circuit to the terminal named mt1 or mt2?

Regards

South

 

I think my question is does it make a difference if I connect the
live side of the circuit to the terminal named mt1 or mt2?

Regards

South

Generally I use Mt1 for the 'live' side and MT2 for the load, see Fairchild AN-3006 and AN-3003 for applications.
Max.

 

Generally I use Mt1 for the 'live' side and MT2 for the load, see Fairchild AN-3006 and AN-3003 for applications.
Max.

Hi Max

Would it matter if I used mt2 for the 'live' side?

Regards

South

 

You can use either, but there are four different gate conditions or modes for the four triggering modes for a Triac.
As long as the triggering mode in which the principle current is in the same direction as the gate current it requires less current to trigger. (gate current direction, with respect to the switched current).
Otherwise you should see no difference.
Max.

 

You can use either, but there are four different gate conditions or modes for the four triggering modes for a Triac.
As long as the triggering mode in which the principle current is in the same direction as the gate current it requires less current to trigger. (gate current direction, with respect to the switched current).
Otherwise you should see no difference.
Max.

ok

thanks Max

South