Electrically Safe LED-to-Lamp Converter

Compared to an ordinary lamp most traditional LEDs are weak when it comes to light emission.  That’s okay for many purposes, but sometimes you want a big lamp instead of a measly LED. This 'light booster' as you might call it is used for switching a mains powered incandescent lamp on and off by means of a tiny LED in an opto-isolator available at the input of the circuit. This LED should take the place of the LED you want to “beef up” in terms of light emission.