Current vs Voltage: Can Voltage Decrease Without Current?

[neeraj kaira]

Is it possible to decrease the voltage without decreasing the current?

 

[phinds]

Is it possible to decrease the voltage without decreasing the current?

yes, by decreasing the load.

Your question out of context really doesn't make any sense.

 

[neeraj kaira]

yes, by decreasing the load.

Your question out of context really doesn't make any sense.

I know this any other formula for it

 

[psparky]

I know this any other formula for it

Yes.

V=IR.

Voltage=current X resistance

 

[phinds]

I know this any other formula for it

Your question out of context continues to not make any sense.

 

[neeraj kaira]

Haha again ohm's law

 

[berkeman]

Haha again ohm's law

Look, you are wasting people's time. Please stop doing that.

State your full question and application clearly, or this thread will be deleted.

 

[neeraj kaira]

And you are wasting mine...stop commenting

 

[berkeman]

Thread closed. Check your PMs.

 

[berkeman]

Turns out his question was about DC-DC converters. From a PM exchange:

Ok let me tell you...i m thinking to make a charger which output should be 5v 1.5 - 2 A
And I'm getting 18 v after stepping down the voltage so i want ti decrease the voltage to 5volts keeping current high.
Hope you will get this .

You use a "Buck" DC-DC converter to lower the voltage with high efficiency:

http://www.maximintegrated.com/app-notes/index.mvp/id/2031

They are available off-the-shelf, or you can build your own with a Buck DC-DC converter IC, an inductor, a diode, and a capacitor.

Regards,
berkeman
PF Mentor