Go Down

Topic: Relay to drive low voltage from high voltage (Read 1 time) previous topic - next topic

terryking228

Hi, Another often-used solution is a optoisolator chip driven from the 115/230V and it's output to Arduino.

There are a couple shown here: http://arduino-info.wikispaces.com/Popular-ICs

See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=45&t=9617 for an example. There are better circuits using a capacitor in the input circuit; I'll look.
Regards, Terry King terry@yourduino.com  - Check great prices, devices and Arduino-related boards at http://YourDuino.com
HOW-TO: http://ArduinoInfo.Info

Go Up