In Using AC with LEDs (Part 1)
we looked at a simple way to run LEDs with a transformer connected to AC Mains.
Here, we will look at getting our LEDs to work without a transformer and build a simple light that is integrated into an expansion bar.
WARNING: For countries with 110v mains, we'd be working with voltages of 150 volts! For Europe and other countries, we are talking about 300 volts or more! At these levels, electricity is lethal! Do not continue unless you are comfortable with working with high voltages and are aware of the precautions to take!
AC supplies are quoted in rms (root-mean-square) values. The PEAK voltage is sqrt(2) * Vrms, which is about 1.4 * Vrms