How to design Transformerless Power Supply circuit Explained with Calculation

Circuit diagram and map???

transformerless, but dangerous. So use caution

can we measure the output voltage of transformarless powersupply wihout connected to the load?

I don't get why you use P-P instead of RMS.

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm (230x1.4142)=325.266 -6 = 319.266 ya think a decimal point , can mean a lot triple check

Can you please send me the pcb board link

Sir gi your explain is very Quite Amazing

All led drivers can have transformerless power supply, but why we don't.

Thank you for a very good explanation

Send pcb pakistan?

Send pcb pakistan?

Great! Good explanation about how to select the polyester capacitor based on the required output voltage. Thanks for sharing.

Do you have circuit in PDF or JPEG format? I want to make pcb at home instead of ordering on online store. In my country, it's expensive.

What's the output current

I want pcb board with components another one 12v pcb board with component.

Please, how much value for bleeder resistance

It is not working

Ur schematic n ur pcb is diffrent

In schematic u have not shown the value of blender resistor

No discussion on zener diode 1/4 or 1watt????

For 150volt dc pls let me know the value of component

Hi, can you please tell me what the R3 does, couldn't you connect it directly to the full bridge rectifier and ignore adding it? If you or someone else can shed some light on my question I would be forever grateful.

These capacitor output is not safe, if the input voltage raises to a high voltage, the capacitor might blast. This happened to me twice.

Can i use capacitor of 2.2 micro farad instead of 1.4 micro farad?

How if i need 24 volt dc?.. could you give the values of all the component?

Please show the calculation for choosing the correct capacitance and voltage value of the filter capacitor .

Consumers friendly technological designing are always different from business friendly. So many extra components and complicated designing are good for business.

Hi, A good effort of details in your video. It does not show the AC voltage before the bridge and DC voltage after the bridge prior to filter.

Sir from where you got the printed pcb , I need some pcb

thanks.but i test many times but never cant do this.i use 1 m ohms and 750 nf.i dont want a specefic voltage ,i just want to test but never succeed.i make circuit on bridboard bread board. 😭😭😭😭

Sir plz help transformer less 12v supply my filter capacitor is heatup what reason

why not use a thyristor - - gives much more output power

The instructor does not know what he is taking about. Some of the comments below have also noted his incorrect description of the way the input capacitor works. The input capacitor does not have any dealings with the voltage on the output. It only controls the current. And the way to remember the current that the capacitor will delver is this: for each 100n in a full-wave circuit, the capacitor will pass 7mA. The capacitor he has used is 155 which is fifteen lots of 100n so it will pass 15 x 7 = 105mA.
It is now up to the zener diode to create a 5v1 voltage on the output of the power supply. The capacitor has nothing to do with this voltage. Now we have a problem. If nothing is connected to the output, the zener diode will drop 5v1 and the current through it will be 105mA This is 535mW You need a 500mW zener.
Now, the next thing that happens is this. When you connect a motor to the output, the motor "robs" (takes) current from the zener. You can take up to 90mA and the output will be 5.1v You can go as high as 105mA and the output will be 5.1v But as soon as you take more than 105mA the output voltage will drop and as you take more and more current the output voltage will drop more and more and more.

Want to try making it

Eski life kitni hogi agar ese regular supply (24x7 h) ke liye use kare

I made it.Awesome Project.Whats the difference between tramsfomerless and transformer powersupply?

Can we use this for esp32?

could you please make a video same for 24dc 10 amps to 12v dc 5amps

Good. But the circuit is shock hazard at dc point which is very dengerus..

Hello..can you pls tell me if I want 12v at point A, with 300 mAmp, what should be the capacitance , I calculated however I m not sure...it is coming like 0.00000292712626451....can you help here

super bro thank you very much

Why is the output voltage more..... 5.45V when a 5.1V zener diode is used

Pls give me the gerber file

Can I use only a resistor to imitate the value of the Impedance? like a resistor with impedance 3192.6?

Can you pls snd gerber file and circuit diagram

Diagram ya PCB layout chahiye

How many ampere at 5v sir thank's.

how can i get 1 amp output current cz i wanna glow 40 rgb leds connected in a parallel

Sir please share your contact.

How to determine the resistor which is connected parallel with this 1uF capacitor??