AC LED through AC 220 why not flashing?
When alternating current is used, the LED is in no direction and can be plugged in arbitrarily (or through a step-down resistor)Twinkle；
LEDs can use either direct current or alternating current;When the DC power is used, the LED is connected in a direction, and the positive pole of the DC power supply must be connected with the positive end of the light-emitting diode (or the positive electrode of the led by a step-down resistor);
The symbol of light emitting diode is the same as that of ordinary diode. It is less outward arrow, but there is no "AC LED" and "DC led"
