brasilkavala
Newbie level 4
Hello all,
I am designing a 230V dimmer using a 12A output triac which I control via a cpu (through optocoupler etc). Is there any way to limit the output current to some 4A (max load about 900W)? Using a fuse before the load would just blow the fuse in case the load needs more current, so it is not an option.
The same is for the output of an AC relay. The capacity of the relay output contact is 250V/10A. I would like to limit this to 7A (about 1600W or so). I need the same solution for this, too.
Why do I need this? Here is an example:
Lets say that the user is supposed to drive a load up to 1000W with this dimmer. In case he connects a load of 1500W, ideally I would like to have a current limiter before the load, so as not to cause trouble to the unit.
Any ideas would be really appreciated
Thank you
I am designing a 230V dimmer using a 12A output triac which I control via a cpu (through optocoupler etc). Is there any way to limit the output current to some 4A (max load about 900W)? Using a fuse before the load would just blow the fuse in case the load needs more current, so it is not an option.
The same is for the output of an AC relay. The capacity of the relay output contact is 250V/10A. I would like to limit this to 7A (about 1600W or so). I need the same solution for this, too.
Why do I need this? Here is an example:
Lets say that the user is supposed to drive a load up to 1000W with this dimmer. In case he connects a load of 1500W, ideally I would like to have a current limiter before the load, so as not to cause trouble to the unit.
Any ideas would be really appreciated
Thank you