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How to make transformer less multi volt power supply at home very easy 220v Ac to 12v,9v and 5v Dc multipurpose power supply circuit making.   Transformer less multi volt power supply from 220v Ac to 12v,9v and 5v DC:- Need for this project :- Online products link is here(affiliate) 3 Amp diode 1n5408 - https://amzn.to/3C0OSKG   cbb21 400v824j 0.82uf pf capacitor - https://amzn.to/3fczMYA   1 mega ohm 1/4 watt resistor - https://amzn.to/3ja3y1s   2200uf 25v polarized capacitor -   https://amzn.to/2VfHTMS   12v   zener diode 1/4 watt - https://amzn.to/2Wwp20x   led 3mm - https://amzn.to/2WBiJci   1k 1/4 watt registor - https://amzn.to/3j4soj5   dc socket - https://amzn.to/3l8Mifv   usb female socket - https://amzn.to/3l8SwvX   7805 ic 12v to 5v :- https://amzn.to/3x7B3WT   7805 ic with heat sink :- https://amzn.to/3x1fjvW   L78009 IC 12v to 9V :- https://amzn.to/...

How to make 12v to 5v and 9v converter using 7805 and 7809 IC, DIY stepdown voltage regulator from 12v or 9v to 5v and 24v or 12v to 9v converter circuit at home very easy. 7805 ic 12v to 5v :-  7805 ic with heat sink :-  L78009 IC 12v to 9V :- 

How to make fire alarm at home with bc547, fire detector alarm system for science project very simple circuit with fire alarm circuit diagram. You can use this fire alarm for any fire emergency purpose.

How to make DIY bubble machine at home very easy from old CD and DC motor which is rechargeable.

Mini HSS circular saw blade rotary cutter , 6 set HSS cutting disc rotary drill tool for wood ,PBC etc. Mini HSS Circular Saw Blades :- 

How to make Rath at home , Rath making at home from cardboard , Rath yatra 2021, DIY Rath decoration ideas with lighting.

DIY 12v DC power supply make, homemade 12v battery charger with 12-0-12 2A transformer and voltmeter. Gharpar 12v battery charger or 12v DC power supply kaise banaye?