How to Operate LED on 220V AC
You can operate any LED on 220 volt AC or 110 volt AC with this circuit You can use any capacitor according to your need I mention all capacitor voltage and current in this table , this circuit is working on 220 volt ac please don’t touch when it is on (Shock Hazard)
1. C1- 474/105/225/684 400volt use any of them, C2- 10uf/25volt
2. Resistor R1-10To 56 ohm, 1watt, R2- 470k to 1mega 1/4watt, R3-100 To 470 ohm,
3. 4pc Diode IN4007 4. 1Watt LED
In the circuit diagram we see a very simple capacitive power supply circuit for driving a 1 watt LED, which may be understood with the following points.
The C1 capacitor at the input forms the heart of the circuit and functions as the main current limiter component of the circuit. The current limiting function makes sure that the voltage applied to the LED never exceeds the required safe level.
However high voltage capacitors have one serious issue, these do not restrict or are not able to inhibit the initial switch ON mains power in rush, which can be fatal for any electronic circuit LEDs are no exceptions.
Adding a 10 To 56 Ohm resistor at the input helps to introduce some damage control measures, but still it alone cannot do the complete safeguarding of the involved electronics.
Capacitor voltage and current Table
Capacitor Voltage Current
334 K 10 22mA
104 K 4 8mA
474 K 12 25mA
105 K 24 40mA
225 K 24 100mA
684 K 18 100mA
CAUTION: THE CIRCUIT SHOWN BELOW IS NOT ISOLATED FROM THE AC MAINS, THEREFORE IS EXTREMELY DANGEROUS TO TOUCH IN POWERED POSITION.