Is there a resistor for a 330v DC supply?

 

for what u want to limit the current or to drop the voltage
yes its available for both
search the google

 

I would like to build a transformerless power supply. here is my circuit. please tell me if it is correct.

 

Don't build that, you'll probably electrocute yourself.
This type of power supply is not safe.

I cannot see any schematics posted either.

 

here is the circuit im trying to build.

http://img854.imageshack.us/i/transformerlesspowersup.png/

is this right? Please tell me what to do?

 

Well to put it short every node in that circuit past the bridge rectifier will be at full mains potential... Including what you might think is 'ground'.

 

is this right? having a 30v dc output on the load resistor when It simulate it?

 

can I use 5 watts resistor on this?

 

This thread will/should be locked. A transformerless supply is not safe for an amateur and thus should not be discussed here.

 

Its our project for my school

 

Is there a resistor for a 330v DC supply?

are you trying to make AC/DC converter?

normally in these cases cant depend on the capacitors (it blow's off)
even there will be so much of heat energy will be produce your ckt. will not last for long.

have you calculated the resistor valves 110Ω before sketch mate



Mr.MCGYVR is right
This thread will/should be locked. A transformerless supply is not safe for an amateur and thus should not be discussed here.

 

Its our project for my school

Even more of a reason to NOT use a transformerless supply. And your teacher "should" know better than to allow this as a project.

 

its our project a transformerless power supply with 24v output and 2 amps. can someone help me.

 

its our project a transformerless power supply with 24v output and 2 amps. can someone help me.

If your teacher truly allowed this project then you should be talking to him/her. Your teacher should be held 100% liable in this case.

 

but the teacher gave us this project. I can't do anything about it.

 

It does not matter what it is for. Stop before you hurt yourself or one of your students. No responsible member of the forum will help you in any way. Done, period, full stop.

 

SORRY SORRY SORRY cant help
you are not mature enough to handle this project tell your teacher to change the project


Accidents are never Invited but they Occur

 

You MUST use a transformer of some type to isolate the output from mains power.
There is no other way to make it safe.

Transformers are remarkably inexpensive compared to a funeral.

Please do not attempt to build a transformer-less mains-powered supply.

 

All of the above warnings are correct and honestly meant. That circuit is deadly.