120v to 10v halve wave power supply

122

02:31:18

It powers the LED(2V)  from a 120v A.C. to 10v D.C. power supply 

published 12 years ago

gijimodo

12 years ago

Within your design, 4 1k resistors can be reduced to a single 1k resistor. Only one zener diode is necessary. As for a circuit to drive an LED from line voltage, using a single current limiting resistor works just fine. No rectification nor filtering is necessary. However, you may wish to use an MOV across the power source just to limit voltage spikes.

Voltransistor

12 years ago

Each resistor is 1 watts, so it requires 4 1k ohm. What's a MOV?

Voltransistor

12 years ago

It's more safe to put in 3 zeners

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