hi evertbody
i have a project for designing a simple earth loop impedance tester in electrical site
but the problem i don't have a clue to design the power supply of 9V
that's all
with great thanks if u help me

 

You could use a battery. 9V is a common and widely available value.
You could use a wall wart and a voltage regulator.
You could assemble a transformer, a bridge rectifier, and a filter capacitor, followed by a voltage regulator.
What are you up for?

 

thanks for that but i'am looking for the blog circuit if u don't mind with bless

 

What pray tell is the "blog circuit". I'm not familiar with that one.

 

Same question. What the heck is a blog circuit?

hgmjr

 

i have a project for designing a simple earth loop impedance tester in electrical site ...

I'm not sure what your testing. If your looking measuring the ground system, I'd suggest you look at: http://www.metercenter.com/biddle/GettingDownToEarth-MC.pdf

 

According to Google, a "blog circuit" is a collective of popular blog websites all featuring the same pundits. If we can get voltage out of that, we'll be rich beyond the dreams of avarace.

In the meantime, how much current will the 9v supply have to source? Is there a size or mass restriction?

 

So if he wants a "blog circuit" why is he asking us? Can't he go there directly and find it for himself? Possibly, this is a manifestation of the lazy sponge syndrome. I'm sure if a blog website deals with power supply circuits then at least one of my suggestions will be there.

 

sorry everyone
i found what i'am looking for i apologise for this thing