Hello, I'm Aabhishek Sharma, the circuit I'm showing explains how to power LEDs from 220v ac source without using transformer. The same concept is used in our modern LED lamps, lights.
Step 1: Warning
The application when operating on 220v ac is not advised to touch you might get a shock or even serious injury. So take all safety measures and do this only if you have some experience in electronics.
Step 2: Materials:
1.1M resistor 1pcs
2.10ohm 1w 2pcs
3.PCB board, general purpose PCB. 1pcs
4.LEDs 1W, upto 20 you can
5.Capacitor 100uf 50v
7.capacitor 2.2uf 400v, polyester nonpolar capacitor.
Step 3: Circuit Diagram & Working
When electricity enters through the 2.2uf, 400v capacitor to the circuit its lowered with respect to voltage as ac Can pass through capacitor but with some loses, the bridge rectifier does the rectification, the further two 4.7uf250v capacitors along with 10ohm 1w resistance acts as filter and stabilizers for output and the last 100uf 50v capacitor provides output for LEDs. Follow up the circuit diagram, make sure you use 1w LEDs, upto 20-30 LEDs you can add,. Add LEDs only in series connection with each other, parallel with not work good. Follow up the link to understand the circuit working and YOUTUBE video https://m.youtube.com/watch?v=fwnjZ4UASa8