#### General Help

# need to light leds using 110AC

I need a few hundred leds to run on 110v ac.

I think the following would make it happen. can you confirm or suggest the correct stuff?

AC 110v --->

Full Wave Dual DC Power Circuit up to 3 Amps / 50V K020

DC --->

Adjustable Dual Voltage Regulator Kit with 1.5 Amps Rating and Filter Capacitors K026

LEDs --->

Emitting color: White

Diameter: 10mm

Lens color: Water Clear

Forward voltage(V): 3.2-3.4

Current(mA): 20

View angle: 30

ground--->

how many 20ma leds will each of the dual DC regulator support?

i have just used a 82k resistor in series with the led to connect to 110vac

the led is a diode in itself, the resistor drops most of the voltage. the resistor value will vary with different led current requirements. this should give about 2 ma (120vrms x 1.414=169vpeak) divide 169 by 82kohm and that would give .002amps (1.414 is the square root of 2) the formula to find Vrms is Vp/(√2) , meaning that Vp=Vrms * √2

hope this helps