# current mulitplier circuit

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#### chrisanne

##### New Member
hello
i would like to build a ac to dc current mulitplier circuit that will take lets say 5amp and take it too 20 amp this will be used on a inverter as a way to used less grid current ,can some one help me i am also new too this thing

thanks

#### microtexan

##### New Member
I would like a circuit/device that will take lets say 5 pounds of gold and take it too 20 pounds of gold.

#### bryan

##### Member
There is, it's called the stock market<g>.

I would like a circuit/device that will take lets say 5 pounds of gold and take it too 20 pounds of gold.

#### bigkim100

##### Banned
There is, it's called the stock market<g>.
Actually...the stock market turns 5lbs of gold into 1 lb of crap

#### blueroomelectronics

##### Well-Known Member
As long as the voltage goes down the current will go up.

#### bigkim100

##### Banned
As long as the voltage goes down the current will go up.
Oh...thats a useful reply. Now Im waiting for the posting on how someone can run their house on 1.5volts, so they can use a AA cell.

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#### dknguyen

##### Well-Known Member
So you want a circuit that takes produces X voltage at 20A and consumes X voltage at 5A? THat is not possible because it is producing more power than it is consuming. It is a free energy machine. For a circuit to increase current, it must decrease voltage.

Input Power = X Volts * 5A = 5X Watts
Output Power = X Volts * 20A = 20X Watts

Efficiency = Output Power / Input Power *100= 20X/5X *100 = 400% Efficiency-> Not possible.

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#### blueroomelectronics

##### Well-Known Member
The OP never mentioned the voltage.

#### Hero999

##### Banned
Yes, for example 48V 1A DC in, 6V 8A out is easily possible.

#### dknguyen

##### Well-Known Member
But he did say he wanted to use it to reduce grid current which hints at a free energy device.

#### Hero999

##### Banned
My above statement was incorrect, you can't have 100% efficiency. I should have said 48V 1A DC in, 6V 7.2A out.

#### blueroomelectronics

##### Well-Known Member
But he did say he wanted to use it to reduce grid current which hints at a free energy device.
He must have thought this was overunity.com

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