ATTENTION Be careful that the circuit operates with high voltage, pay attention to the capacitor connections + – Use fuses in the Fused Electric Line, before operating the circuit may be large explosions at high voltage if you connect the poles upside down.
220 AC volts Mains voltage with low current LEDs can be operated with a simple circuit
It is a simple circuit cost low material less 🙂 1 pcs 1N4007 diode 2 pcs with 33k resistor and 2ma power led one by smd materials becomes a tiny circuit
I made an experiment using the following calculation page 5 pieces of white led used to be a bit rough circuit because the material is not yet a good sample counted 220 volt mains voltage directly with the bridge diode directional filter to the 4.7uf 400v capacitor added
Led Units = 5 Voltage = 3 (volts) LED Current (mA) = 25 Inputs Voltage = 310 (dc volts)
As a result the resistance value and the power to be used is 12000 Ohms (12k) 7.252 Watts
I used a 6kps bridge diode with 4k 62k 3 watt resistor parallel connection instead of the 4k 62k 3 watt resistor I used (instead of the values in parallel connection of the resistors ) I used a 6 amps bridge diode (4x 1n4007 is the same thing) we could establish our circuit with wave rectification, but the better the clean dc voltage for luminous luminaires.
After the test, I first came to mind that I have set the white led current to 25 ma 1 ledi power supply with 3v supply when I feed 11 ma I saw the current 4v when given about 45ma I have not experienced problems in the case of the LED current also remember to make sure the led during operation The measured voltage is between 3.1 volts