bogdanfirst
New Member
Here is wahat i use for leds when i connect them to high voltage ac, line directly to the mains.
here is how the circuit works.
on one semiperiod the zenner conducts in one way, thus having 2.7v(or the zenner value) and lights the led.
on the other semiperiod, you get 0.6-0.7V(like to a normal diode, because the zenner conducts like a normal diode in one of the way), so the reverse led voltage is not too high to damidge it.
here is how the circuit works.
on one semiperiod the zenner conducts in one way, thus having 2.7v(or the zenner value) and lights the led.
on the other semiperiod, you get 0.6-0.7V(like to a normal diode, because the zenner conducts like a normal diode in one of the way), so the reverse led voltage is not too high to damidge it.