Opto-Isolated TTL to 110 VAC Power Source
Here is a simple hack to convert a simple (cheap) module into your very own opto-isolated TTL to 110 VAC power source. Since it is isolated you can control it with low voltage circuitry and have no worry about electrocution. The other concern when you control high voltage with a low voltage control circuit (a computer parallel port for example) is that a failure could cause high voltage