3.3v dc digital output to 240v ac interface

[fyah17]

Hello, I need some assistance in creating an interface to change 3.3v dc to a 240v ac device. Any assistance will be greatly appreciated.

 

[(*steve*)]

What is your 3.3V source and how much power do you want from the 240V AC?

If you need more than a fairly small amount of power this isn't going to be easy. Perhaps a motor/generator is the easiest way. But let's wait and see until you've provided the figures.

 

[Chris Dancer]

Do you want to change 3.3V to 240V AC, or do you want to control 240V AC with a 3.3V signal?

If it's the latter, use the 3.3V to switch on a transistor, and use the transistor to switch on a relay. Using a solid-state relay is an alternative, especially if If you can't find a 3.3V relay. Make sure it's rated for 240V and can handle the necessary current.

 

[fyah17]

Thanks Chris, I did find information on the solid state relay and used it.